1. A scientist is studying the effect of exercise on blood pressure. He studies 50 people who exercise regularly to find out whether their blood pressures are low, average, or high. This is an example of a(n): Answer choices: sample survey. observational study. experiment.

Q: Evaluate o = √npq, where q = 1 - p, for n = 190 and p = 0.8. 0= (Simplify your answer. Type an…

A: given data n = 190p = 0.8q = 1-p = 0.2find value of standard deviation (σ) = ?

Q: "A look at the descriptive statistics for males and females show that male scores generally fall…

A: Hint:  The more the standard deviation the more variance is.  A population is a group of subjects…

Q: (A) Median and mode have no use as a measure of central tendency. (B) The mean with a standard…

A: Measures of Central Tendency: A singular metric that strives to summarize a group of information by…

Q: Another Practice Problem X 8 6 1 4 9 Y 17 14 5 12 23 Yi = bo + b₁x₁ + Ei ŷi bo + b₁xi = Question 1…

A:

Q: Q1: Mention the required steps to get the following: a) Finding the percentile ranks of student…

A: Percentile Histogram Skewness Kurtosis Quartile Box plot Normal Distribution

Q: The accompanying data set lists diastolic blood pressure measurements (mm Hg) of females. All of the…

A:

Q: 90. Seven hundred and seventy-one distance learning students at Long Beach City College responded to…

A: The given summary report is: The total number of students, who were surveyed is 771.

Q: 6. The diameter of electric cables, say X, is assumed to be a continuous random variable with…

A:

Q: suppose you have two numbers with variance 9. what is the range of the this set

A:

Q: (a) Given that four airlines provide service between Chicago and California In how many distinct…

A:

Q: The defect length of a corrosion defect in a pressurized steel pipe is normally distributed with…

A: Concept: Z is known as Standard normal variable Z=(X-mean)/standard deviation Note: According to…

Q: Find the standard deviation of the sampling distribution of sample means using the given…

A: Given,μ=55 , σ=10and n=4

Q: The data table to the right represents the volumes of a generic soda brand. Complete parts (a) and…

A: The given data table represents the volumes of a generic soda brand.

Q: Given the following data in measuring a distance of a certain line. DISTANCE 740.53 740.59 740.57…

A: Given data: Distance No. of Measurements 740.53 4 740.59 3 740.57 6 740.53 7 Total 20…

Q: You may need to use the appropriate appendix table or technology to answer this question. A local…

A:

Q: Susan has just completed her second semester in college. She earned a grade of A in her 2​-hour…

A: We have given that  Earned a grade of A in her 2​-hour calculus ​course grade of C in her 4​-hour…

Q: Which of the following values will give us the most relevant information about a particular group of…

A: Hint: Different data sets may have the same mean. So, the Mean is not enough to get the relevant…

Q: Suppose that an airline quotes a flight time of 133 minutes between cities. Furthermore, suppose…

A:

Q: IM Systems assembles microcomputers from generic com-ponents. It purchases its color monitors from a…

A: Given Lead time is 25 days Average daily demand, d¯=3.5  Standard deviation of daily demand, σd=1.2…

Q: Suppose E1, E2, E3, E4, and E5 are mutually exclusive and exhaustive events. Let A be an event with…

A: Given:  E1, E2, E3, E4, and E5 are mutually exclusive and exhaustive events. A be an event with P(A)…

Q: Listed below are numbers of Internet users per 100 people and numbers of scientific award winners…

A: Given data: Internet users Award winners 78.4 5.5 78.9 9.1 57.1 3.3 67.1 1.6 76.4 11…

Q: Eight people took a test in which one can score only 1, 2, or 3. (a) You know that exactly two…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is…

A: Concept: Upper and lower class limit is the highest and lowest value that can be taken in an…

Q: 6. A sample poll of 200 voters revealed the following information concerning three concerning three…

A: Given Information: Total number of voters is 200 There are three candidates A, B and C. 28 voted in…

Q: What is the probability that the US and China go to war this century? Please state your probability…

A: Probability of US and China going to war is 0. Atlesst for this century. So there is 0% chance that…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given Population mean μ=59, standard deviations σ=9  P(59<X<68)=?

Q: skip if you arleady did this otherwise downvote

A: The first choice is correct. Mean (experimental group) = 4.4 Mean (control group) = 1.5 So mean of…

Q: (A) If the standard deviation of Set 1 is larger than Set 2, the variance of Set 1 is also larger…

A: Here, we need to identify which of the given statement(s) is/are true.

Q: 5. Four car rental prices were quoted for a 3-day rental. The frequencies are listed. Let x…

A: The objective is to find the missing values in the table. Given data indicates the car rental prices…

Q: Find the sample space of the following two-stage experiment: First select an SCC student randomly…

A: two stage experiment  first record the gender if student is male ask him whether his last assignment…

Q: Calculate the Mean and Median for the following. 50-100 value Frequency 10 300-350 15 350-400 10…

A: Data given  CI frequency  50-100 10 100-150 30 150-200 40 200-250 70 250-300 60…

Q: (A) Variance relates to how the values in the data set are positioned relative to each other. (B) A…

A: Variance is the measure of dispersion. It measure the squared difference of each observation from…

Q: Using Holt's method forecasting with alpha=0.4 and beta=0.5, company ABC would like to forecast the…

A: In general, Holt's method (or double exponential smoothing method) uses two parameters, i.e., the…

Q: (a) The second and the third will receive a total of exactly 6 calls in half an hour  (b) The firm…

A: by bartleby policy i can gives only 4 subpart's answers   Poisson distribution is given by :…

Q: The National Institute of Standards and Technology (NIST) offers a wide variety of “standard…

A: Given Information: In three trials, the cholesterol concentrations are 6.476,6.590,6.338. The…

Q: The barricade width of 25 glass 2-liter bottle was measured by an independent quality control…

A: Givensample size(n)=25Mean(x)=4.05standard deviation(s)=0.08confidence level=95%

Q: Exposure to microbial products, especially endotoxin,  may have an impact on vulnerability to…

A: Data is given for Urban homes and Farm homes We have to calculate mean and median for both. We have…

Q: Use the given data set to complete parts (a) through (c) below. (Use a=0.05.) 10 9.15 8 8.13 Click…

A: The table shows the x and y values.

Q: Read and Understand Annabeth wants to find out the severity of ADHD symptoms of her fellow teenagers…

A: The mean and standard deviation (SD) of the experimental group is observed as 4.4 and 0.3,…

Q: Susan has just completed her second semester in college. She earned a grade of A in her 2​-hour…

A:

Q: The viscosity of a liquid detergent is supposed to average 800 centistokes at 25°C. A random sample…

A: given data n = 16 x¯ = 812σ = 25claim : μ=800

Q: (A) Ratio-levels of measurement is defined by the presence of a true zero. (B) Thus, it is improper…

A: Definition:  Interval data: Interval data is  the quantitative data but they measures not true zero…

Q: The following is a list of costs for the 12 different sandwiches sold at a cafe. 5.49         6.59…

A: Note: As per my policy i can answer only three sub parts. kindly repost the remaining sub parts.…

Q: If μ = 8.7,0 = 0.7, n = 9, what is a μ and o? (Round to the nearest hundredth) I P = μ = O √n…

A: given data μ = 8.7σ  =  0.7n = 9we have to find mean and sd for sampling distribution

Q: The following linear hypothesis can be tested using the F-test with the exception of: Ho: b₁/b2 = 1…

A: The t-test is used to test the significance of the variable in the regression. Consider β as one of…

Q: The LawnPlus Fertilizer Company distributes fertilizer tovarious lawn and garden shops. The company…

A: Since you have posted a question with multiple sub-parts, we will solve first 3 sub-parts for you.…

Q: What is the obtained value – does the critical value exceed the obtained value? What does this mean…

A: Concept: Critical value of t is seen in table at DF=n1+n2-2

Q: Use the degree of confidence interval and sample data to find the confidence interval of the…

A: Given: a) Heights of women: 95% CI n=50x=63.4s=2.4 b) Heights of women: 85% CI n=50x=63.4s=2.4 c)…

Q: why there is no .Nominal variable: and ordinal variable

A: Data in statistics is broadly divided into two categories  1) Quantitative data 2) Qualitative data.

Q: 8. A car salesman has 9 used cars for sale. They have a mean price of $6000. What is the total price…

A: q-8 given data sample size n = 9 sample mean x¯ = $6000 total price of all 9 cars ∑x = ?