#13. A survey reported in Time magazine included the question "Do you favor a federal lawrequiring a 15 day waiting period to purchase a gun?" Results from a random sample of UScitizens showed that 318 of the 520 men who were surveyed supported this proposed lawwhile 379 of the 460 women sampled said "yes."a. Verify that the sample sizes are large enough to use a normal distribution.Show your work.b. Find and interpret a 95% confidence interval for the difference in the proportions of menand women who agree with this proposed law. Show your work.#14. Consider rolling a fair six-sided die.a.What is the probability that the result of rolling the die is a 3?5:10 PM4/30/20.1కగి కింగి 8ఆ గ కిశంు

a. Conditions: The conditions for the two proportion test for sample sizes n1 and n2 with sample…

Answered: #13. A survey reported in Time magazine…

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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The following sample of observations was randomly selected. x 5 3 6 3 4 4 6 8 y 13 15 7 12 13 11 9 5 a. Determine the .95 confidence interval for the mean predicted when x = 7.b. Determine the .95 prediction interval for an individual predicted when x = 7.
A statistics instructor randomly selected four bagn of oranges, each bag labeled 10 pounds, and weighed the bags. They weighed 9.5, 9.7,9.5, and 9.5 pounds. O Assume that the distribution of weights is Normal. Find a 95% confidence interval for the mean weight of all bags of oranges. Use technology for your calculations Answer parts a and b below. a. Choose the correct interpretation of the confidence interval below and, if necessary, fil in the answer boxes to complete your choice. OA. We are 95% confident the population mean is betweenand OB. We are 95% confident that the sample mean is between and OC. There is a 95% chance that all ntervals will be between and OD. The requirements for constructing a confidence interval are not satisfied. (Type integers or decimals rounded to the nearest thousandth as needed. Use ascending order.) nti ou Res "ptil atie
.85%, 3.77 of 9 pts 7.1.19-T Question Help ▼ In a study of the accuracy of fast food drive-through orders, Restaurant A had 248 accurate orders and 56 that were not accurate. a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate. b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.171
Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)
A statistics instructor randomly selected four bags of oranges, each bag labeled 10 pounds, and weighed the bags. They weighed 10.3, 10.8, 10.4, and 10.6 pounds. Assume that the distribution of weights is Normal. Find a 95% confidence interval for the mean weight of all bags of oranges. Use technology for your calculations. Answer parts a and b below. a. Choose the correct interpretation of the confidence interval below and, if necessary, fill in the answer boxes to complete your choice. A. We are 95% confident the population mean is between and B. There is a 95% chance that all intervals will be between and C. We are 95% confident that the sample mean is between and D. The requirements for constructing a confidence interval are not satisfied. (Type integers or decimals rounded to the nearest thousandth as needed. Use ascending order.)
A study of 420 comma 026 cell phone users found that 140 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0434 % for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell phones? Why or why not?
The following data represent a random sample of five measurements from a normally distributed population: 7,4,2,5,7 a. Find 90% confidence interval for u. b. Find a 99% confidence interval for u.
4.A prior study(by Pew Research 2021)found that 35 out of 50 randomly selected US adults between the ages of 18 to 29 use (or have used) Instagram. Construct a 99% confidence interval for the population proportion of US adults between the ages of 18 to 29 use (or have used) Instagram. (round to three decimal places) a.Identify the following: X, N, P b.Which distribution should you use for this problem? c.What is the corresponding critical value for a 99% confidence interval? d.Calculate the margin of error (3 decimal places) e.Construct a 99% confidence interval f. Interpret the interval.
. Buck randomly selects 38 basketball shoes from the Shoe Warehouse and finds the mean prie to be $66.88 with a standard deviation of $5.62. Construct a 99% confidence interval for the population standard deviation o, and find the x2 values used in the calculation. A. ($4.31, $7.93) with xỉ = 18.586 and x = 62.833 B. ($4.27, $7.78) with xỉ = 19.286 and xỉ = 64.181 C. ($1.82, $3.34) with xỉ = 18.586 and x = 62.833 D. ($4.27, $7.78) with xỉ = 19.960 and xi = 59.893 E. ($18.58, $62.88) with xỉ = 18.586 and x = 62.833 %3D %3D reject

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