a population of 19,100 subjects, 59% possess a certain characteristic. In a sample of 320 subjects selected f pulation, 30% possess the same characteristic. How many subjects in the population and sample, respective s characteristic? subjects in the population possess the characteristic
Q: A research done by a graduating student reports that the average score of University students in…
A: Solution The researcher wants to test the single mean.
Q: In a statistic class, 3 scores were randomly selected with the following results were…
A: The question is about z score.Given :Randomly selected no. of scores ( n ) = 3To find :z score for…
Q: How would I find the P value? I am using statcrunch and I do have excel but unfortunately I wasn't…
A: Given: Grand total=1804 The test statistic is obtained using, χ2=∑O-E2E Where E is the expected…
Q: A survey of 2255 randomly selected US adults found that 51% said they know all or most of their…
A:
Q: During a three-day period, 600 observations were randomly taken on 15 employees, with the following…
A: The frequency distribution of time spent of employees is given as follows:CategoriesNo. of…
Q: A physical therapist wants to know whether a new exercise regimen has an effect on the pulse rate of…
A: Solution: To test the hypothesis ' Ho: Median difference is zero Vs Ha: Median difference is…
Q: Find the following: a) The sample Space. b) P(A) c) P(B)
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: About 7 percent of the pop has a particular gene tic mutation 200 ppl are randomly selected…
A:
Q: A chi-square independence test is to be conducted to decide whether an association exists between…
A:
Q: Golden Retriever German Short Hair Pointer 3 Begian Tervuren 1 Australian Shepherd 3 Border Collie 1…
A: Given data and calculation of relative frequency is shown in the table
Q: A professor using an open source introductory statistics book predicas that 10% of the students will…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: (a) Is there evidence that field of study and smoking status are not independent? Use the…
A: (a) The test is whether there is evidence that field of study and smoking status are not independent…
Q: 10.) Wind turbines are notorious bird killers. In the name of gre reduce harm to these flying…
A: In this case, the study was conducted to determine if the blade color influenced fatality counts.…
Q: About 10% of the population has a particular genetic mutation. 900 people are randomly selected.…
A: Obtain the mean for the number of people with the genetic mutation in such groups of 900. The mean…
Q: A sample of 91 objects had the following results: ¯xx¯ = 189 The median = 191 SS = 3. Suppose…
A: It is given that the sample mean is 189, median is 191 and S =3.
Q: A random sample of n, 10 regions in New England gave the following violent crime rates (per milion…
A: Given: n1 = 10 n2 = 12 Formula Used: Mean X = ∑Xin Sample standard deviation S = ∑Xi-X2n-1…
Q: A sample of 66 objects had the following results: ¯xx¯ = 140 The median = 143 SS = 4. Suppose 6…
A: Given that mean= x=140If we add 6 to each numbers then the mean will increase by 6 too.New…
Q: The sports coaches at West High School believe that 12% of their students play soccer. In a sample…
A: Given that Sample size n = 155 Number of students who play soccer, X = 21 Claim : 12% of students…
Q: Using the 2" > n rule, if you see a histogram with five classes, which statement is true? O The…
A:
Q: Crumbs Cookies was interested in seeing if there was an association between cookie flavor and…
A: The data shows the cookie flavor and whether or not there was frosting.
Q: Out of 6000 graduates in a town 600 are females out of 1200 graduate employ 100 are females. Use x…
A: Given that: Total number of graduates/ frequency, n = 6000 Total number of females = 600 Total…
Q: Based on a sample of 80 men, 35% owned cats Based on a sample of 40 women, 50% owned cats The test…
A:
Q: (b) Give the best estimate for p and give the margin of error for the estimate. Round your answers…
A: Given n=1060 X=605
Q: Suppose we want to know whether or not three different exam prep programs lead to different mean…
A: Let μi denotes the population mean score for the Group i, i=1,2,3. Given that ni=10;i=1,2,3,…
Q: Out of 6000 graduates in a town 600 are females out of 1200 graduate employ 100 are females. Use z…
A:
Q: Data was collected for 296 randomly selected 10 minute intervals. For each ten-minute interval, the…
A: A histogram was provided that displayed a random sample of n=296 individuals selected 10-minute…
Q: 3 Data was collected from 2 random samples of 50 students regarding their favorite candidate running…
A: The objective of this question is to find out the expected number of students who would favor…
Q: Employers want to know which days of the week employees are absent in a five- day work week. Most…
A: The question is about categorical data analysis.Given :To find :Test that the highest no. of…
Q: A sample of 32 objects had the following results: ¯xx¯ = 109 The median = 112 SS = 9. Suppose 3…
A: From the given information, total number of objects n = 32. Sample mean Median = 112. Sample…
Q: You may need to use the appropriate appendix table or technology to answer this question. A magazine…
A: Given: Total number of women (n1) is 150. Number of women who trust recommendations made on this…
Q: 42 42 23 32 30 42 25 47 35 38 Sit-ups after 57 48 29 41 36 57 40 51 41 40 Step 2 of 5 : Find the…
A: We have given that the paired data of teo sample sit-ups before and sit-ups after. Sample size n is…
Q: statistics students are randomly selected. for each of them, their body temperature is measured (°C)…
A: Concept: Correlation (r) is defined as the linear relationship between the two variables. The range…
Q: sample of 180 hypertension NON MODERATE HEAVY…
A: Given Information: 1) 2)
Q: A study compares students who use a website and students who do not use the website. In addition to…
A: The two samples, 141 students who were users of the website and 68 students who were not users of…
Q: A fitness course claims that it can improve an individual's physical ability. To test the effect of…
A: State the hypotheses. That is, there is no evidence that participation in the physical fitness…
Q: Eight statistics student are given the “Hayashi Test of Extreme Good Looks” (HTEGL). Their scores…
A:
Q: If 2% of a population has a genetic mutation and 100 people are randomly selected what is the mean…
A:
Q: If a sample has n=23 items, how many degrees of freedom should there be if you 're doing a t-test?
A: The objective of the question is to determine the degrees of freedom for a t-test given a sample…
Q: A study contained four treatment conditions with n 5 participants in each group. What is the value…
A: Question 6: There are 4 treatment conditions with n=5 participants in each group.
Q: Sexual harassment of college students. A survey of 2036 undergraduate college students aged 18 to 24…
A: The random variable students say they have encountered some type of sexual harassment follows normal…
Q: 11.40 In the preliminary studies of a new drug, a pharmaceutical firm needs to obtain infor- mation…
A: Given, Dose Level Response 2 5, 7, 3 4 10, 14 8 15, 17 16 20, 21, 19 32 23, 29 64 28,…
Step by step
Solved in 2 steps
- A fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course)d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course). Use a significance level of α=0.05α=0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 3232 4545 2121 5050 3636 4444 2626 2020…64 owners and a similar age group of pet owners. The pet owners are matched one to one with the non-pet owners for income, number of close friendships, and 0. A researcher uses a matched-subjects design to in- than singles without pets. A mood inventory survey vestigate whether single people with pets are happier happier is given to a group of 20- to 29-year-old non-p general health. The data follow: Non-Pet Owner Pet Owner Matched Pair 12 14 8. 10 13 9. 9. D 13 E 10 12 F a. Is there a significant difference in the mood scores for non-pet owners versus pet owners? Test with a = .05 for two tails. b. Construct the 95% confidence interval to estimate the size of the mean difference in mood between the population of pet owners and the population of non-pet owners. (You should find that a mean difference of p, = 0 is an acceptable value, which is consistent with the conclusion from the hypoth- esis test.) %3D D. ABAssume that 900 births are randomly selected and 443 of the births are girls. Use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high.
- Imagine a researcher asks a sample of five people to drive two types of cars and rate each of them on a scale of 1 to 25. The researcher wants to know: Is there is a difference in the ratings of the two types of cars. Below are the data collected: Type A: 20, 10, 11, 23, 7 Type B: 10, 11, 4, 12, 1 what type of T Test would be appropriateA fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course)d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course). Use a significance level of α=0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 42 42 23 32 30 42 25 47 35 38 Sit-ups after…Which of the following is most likely a population as opposed to a sample? A Every third person to arrive in the hospital B Registered nurses in 2007 © Respondents to a newspaper survey D First five nurses completing their duties
- A fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course)d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course). Use a significance level of α=0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 42 42 23 32 30 42 25 47 35 38 Sit-ups after…A fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course)d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course). Use a significance level of α=0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 42 42 23 32 30 42 25 47 35 38 Sit-ups after…Compute the mean weight of a sample of seven chickens selected at random from a large poultry. the chickens weigh: 8,12,9,11.5,8.5,9.5,10( pounds)
- About 4% of the population has a particular genetic mutation. 600 people are randomly selected. Find the mean for the number of people with the genetic mutation in such groups of 600. Submit Question acerA random sample of 38 jelly beans is provided. 23% are blue, 23% are orange, 15% are green, 15% are yellow, 12% red, and 12% are brown. provide the observed and expected frequenciesA fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course)d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course). Use a significance level of α=0.05α=0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 3030 3939 5353 3838 3333 5151 2222 3838…