A recent report stated that the proportion of teens that vape has decreased from the prior year. The authors randomly selected a group of 600 teens from the current year and 126 of them vape. They randomly selected 800 teens the prior year and 216 of them vaped. Is there significant evidence that the proportion decreased? c. Compute the value of the test statistic (z-value) d. Compute the P-value

Q: a. What is the mearn the original samples have n = 4 scores? b. What is the mean for the combined…

A: From provided information; one sample has a mean M1= 8 and second sample has mean M2=16, two samples…

Q: What is the alternative hypothesis in the problem? The average family family size in the Philippines…

A: Given The average family size in the philippines was reported as 4.30 Mean=μ=4.30 l.o.s.=α=0.10

Q: The average house has 10 paintings on its walls. Is the mean larger for houses owned by teachers?…

A: From the provided information, Sample size (n) = 15 Level of significance (α) = 0.05

Q: A sample of n = 7 scores has M = 5. All of the scores are doubled. What is the new mean?

A: For a set of observations of size n, the mean is defined as M = Σx/n.

Q: ???

A: a.) The Hypotheses First things first, let us identify the claim. The purpose of the test is to see…

Q: What is the p-value of a one-sided greater than One-Sample Z-Test for Mean where the z-statistic…

A: Denote p as the true population proportion.

Q: Do male and female college students have the same distribution of living arrangements? Use a level…

A: Given,  Observed frequency :    Dormitory Apartment Other Total Male 21 42 58 121 Female 26…

Q: The 3rd quartile of the ages of 300 students of Math class is 22 years. Which of the following…

A:

Q: Test the claim that the proportion of people who own cats is significantly different than 20% at the…

A: Given that  Sample size: n =400 Sample proportion: p^=0.12 Population proportion: P=0.20 Level of…

Q: n the samples that have been taken, the highest weighing item is paper waste with an average weight…

A: Hypothesis testing

Q: What is the p-value of a one-sided less than One-Sample Z-Test for Mean where the z-statistic equals…

A: We have to find correct option.

Q: The mean number of eggs per person eaten in the United States is 272. Do college students eat more…

A: In order to determine whether the average number of eggs eaten by college students per person is…

Q: Imagine an experiment with a factor that has 9 levels (e.g., coffee made with coffee beans from 9…

A: We have given that  MS(factor) = 40.0 MS(residual) = 10.0.

Q: Twenty students from a statistics class each collected a random sample of times on how long it took…

A:

Q: You are conducting a study to see if the probability of a true negative on a test for a certain…

A: From the provided information, level of significance (α) = 0.10 The hypotheses are as follow: H0: p…

Q: The sample statistic, such as sample mean is a. zero b. constant c. random variable d. twice the…

A: The question is asking about the nature of a sample statistic, such as the sample mean. In…

Q: C. Find the sample size from each of the given data. 7.95% level of confidence, E = 10, o = 24 8.…

A: C. 7.  Here it is given that 95% confidence , margin of error E=10 and standard deviation σ=24…

Q: rofessor wants to know if her Psychology statistics class has a good grasp of th. Six students are…

A: Given that  Sample size n=6 Population mean =70

Q: Test the claim that the proportion of men who own cats is significantly different than 45% at the…

A: Solution: Let X be number of men owned cats and n be the sample number of men. From the given…

Q: For this study, we should use t-test for a population mean The null and alternative hypotheses would…

A: Test is that whether the average is larger for college students. Sample size is n = 11 First we have…

Q: Construct all random samples consisting two observations from the given data. You are asked to guess…

A: Given information: Watermelon A, B, C, D, E, and F has a weight (in pounds) 19, 14, 15, 9, 10 and 17…

Q: What is the correct summary? OPTIONS A. There is not enough evidence to support the claim that the…

A:

Q: of adults are smokers. A random sample of 300 adults is obtained.

A: As given, Let X be the random variable such that number of adults who are smokers. According to the…

Q: 4. A sample mean has a z= +1.0 on the sampling distribution created from the population of…

A:

Q: The prices of a sample of books at University A were obtained by two statistics students. Then the…

A: Given Alpha=0.05 n=15

Q: The average salary for American college graduates is 540,300. You suspect that the average is…

A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Find the standardized test statistic, t, to test the claim that u, #4, Two samples are randomly…

A:

Q: The average American gets a haircut every 39 days. Is the average larger for college students? The…

A:

Q: Is there a difference in the proportion of individuals with food allergies between young children…

A: Denote p1 is true proportion of young children have food allergy and p2 is the true proportion of…

Q: You interview 100 college sophomores , and you ask how much they earned the previous summer. You…

A: We have given that the 100 sophomores. Here we need to use the median to describe the centre of the…

Q: in a survey conducted by a reputable marketing agency, 277 of 1000 adults 19 years of age or older…

A: To ensure that the results of the study are representative of all adults 19 years of age or older,…

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern pike over 20…

A: Given that, In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern…

Q: Select the best response. We take a simple random sample (SRS) from a population to studythe effect…

A: Here we want to know which Hypothesis test use.

Q: 2. A Suay vиas maae to сотраre tпе costs oj supporing a јатпу Jor a ye In aifferent foreign cities.…

A: Solution: n1=11  Sample size of Toranto n2=11  Sample size of  Mexico ∑x1= 741200x1= ∑x1n1=74120011=…

Q: For an independent-samples t-test, what is the effect of increasing the number of scores in the…

A: Answer: For an independent samples t test, By increasing the number of scores in the samples will…

Q: The mayoral challenger claims that less than 30% of residents over the age of 25 have bachelor’s…

A:

Q: Can you conclude that the proportion of boys who are overweight differs from the proportion of girls…

A: Here use  proportion test for 2 sample

Q: A sample of 100 adult women was taken, and each was asked how many children she had. The results…

A: As per our guidelines we are suppose to answer only three sub parts. From the given data the no.of…

Q: The average American gets a haircut every 43 days. Is the average different for college students?…

A:

Q: f. Report the test statistic. (Give answer to 4 decimal places) g. p-value = (Give answer to 4…

A: BrandDurability…

Q: 4b. Using the same information from 4a, what is the standard error of the sampling distribution?…

A:

Q: The number of hours of computer usage in a day of a random sample of 12 students was recorded as…

A:

Q: A special diet was given to a species of birds and the gain in weight (in grams) over a 5-week…

A: Given the five-number summary is 55, 90, 105, 120, 155. This means: Min=55 first quartile=90…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.