To estimate the mean height of female high school juniors, you take arandom sample of 30 female students and get these results (in inches):72, 51, 67, 68, 61, 69, 58, 56, 60, 5666, 61, 60, 59, 59, 54, 58, 53, 68, 6357, 62, 63, 64, 56, 62, 58, 67, 57, 70If the o is 5.3, based on past research, and you want to construct a 97%confidence interval using (estimate) + (margin of error)= (estimate) ± z*-what's your point estimate of 4?A. .968B. 61.17С. 30O D. 5.4O E. 65

Answered: To estimate the mean height of female…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A cardiologist is interested in the mean recovery time of her patients who have had heart attacks. Suppose the cardiologist has a total of 52 patients and among those, 30 patients have had heart attacks. The study records 10 patients' recovery times, what is the sample size? 10 None of the above 52 3
Here is a random sample of 20 Target Store shoppers and the number of items purchased: 32, 11, 45, 17, 35, 8, 42, 24, 13, 46, 23, 19, 14, 15, 36, 23, 8, 32, 16, 39 Construct an ordered Stem and Leaf plot by hand using your pencil and paper. In the essay text box, type in the leaf values that are on your stem for 3 (30's).
In a sample of employees at a company here were the number of days they were out (sick/personal/vacation days) last year: 1, 6, 19, 35, 5, 9, 8, 12, 2, 15, 7, 7, 11, 15, 0, 25, 20, 15, 19, 5 Using Minitab, find the following sample statistics (take a screenshot of your output from Minitab and paste it here): Mean = median = Standard deviation =IQR=
According to the latest research 91% of people are right handed. In a sample of 120 people, what is the mean of the number of right number of right handed people?
The National Sleep Foundation recommends that adults aged 18 to 64 get an average of 8 hours of sleep per night. A survey of sleep hours was taken during a Statistics class. The 25 data values listed below: 4, 5, 5, 5, 5.5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10 Do we have enough evidence at the 0.05 significance level to say that GRCC MA 215 students tend to get less sleep than the recommended average of 8 hours per night?
Maryland, as the four U.S. cities with the highest percentage of millionaires (Kiplinger website). Consider a sample of data that show the following number of millionaires for samples of individuals from each of the four cities. Millionaire Cannot conclude Bridgeport, CT CA San Jose, CA Yes 42 36 No 458 264 a. What is the estimate of the percentage of millionaires in each of these cities (to 1 decimal)? 0.436 Use Table 3 of Appendix B to find the p-value. The p-value is greater than 0.10 What is your conclusion? City Washington, D.C. 35 365 Bridgeport, San Jose, Washington, Lexington Park, CT D.C. MD Lexington Park, 46 27.4 Percentage, % 36.5 b. Using a = 0.05 level of significance, test for the equality of the population proportion of millionaires for these four cities. What is the p-value? Compute the value of the x² test statistic (to 3 decimals). 36.5 MD 33 367 that there is a difference among the population proportion of millionaires for these four cities.
1. Explain the difference between z-tests (which use categorical data), and t-tests (which use numerical data). 2. Conduct a t-test, both when given statistics, and when given data. 3. Conduct a t-test, 2-sample t-test, and paired t-test. 4. Differentiate between the five types of tests we have learned so far.
4. There are 35 students in a class. Fifteen of them are men and 20 of them are women. The mean height of the men is 69.65 inches, and the mean height of all 35 students is 67.18 inches. What is the mean height of the women?
Compute the mean of 30, 70, 83, 41.
A research scientist wishes to test the claim that the mean number of children per classroom in California elementary school is less than 35. She selects a simple random sample of 42 California elementary school classrooms. Are the requirements to test the claim met? Explain in 1 - 2 complete sentences.
Suppose the following data show the prices of 4 cars with similar characteristics that sold at a recent auction (in thousands of dollars): 5.7, 11.3, 10.4, 12.9. Calculate the mean selling price of the sample. (please express your answer using 2 decimal places)
14 2. The test scores, of 16 students are listed below: 44, 46, 51, 57, 60, 63, 65, 70, 75, 76, 85, 87, 90, 94, 95, 97. (b) Find the first quartile of the above data, 87 88.5 58.5 57

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