Listed below are heights of a random sample of men and women.MenWomen170.8 175.2 175.7177.3188.0 166.8 177.7 176.9 174.8 176.0161.0 168.2 166.0 153.7 159.6 176.8 169.1 135.4 164.3 170.6a. Construct a 96% confidence interval for the difference between the mean heights of men andwomen. Round your answers to 3 decimals. Use the smallest of the two degrees of freedom.(Enter the positive one.)Critical value: 2* or t*Margin of Error: E =Confidence Interval: [=b. Interpret your result in part (a) in a complete sentence.

From the provided information, Sample size (n1) = 10 and n2 = 10 Confidence level = 96%

Answered: Listed below are heights of a random…

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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given below. Higher scores c a. Use a 0.05 significance le same mean. b. Construct a confidence in about the confidence interval
Keisha wants to estimate the percentage of managers at her company that hold an MBA. She surveys 320 managers and finds that 70 hold an MBA. Find the margin of error for the confidence interval for the population proportion with a 90% confidence level. z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576 Use the table of common z-scores above. Round the final answer to three decimal places.
The chancellor wants you to do a research study on the number of hours students report sleeping in a typical day. You select a random and representative sample of 25 students and ask them to report the number of hours they sleep in a typical day. Tehe data below are in hours. 5 7 3 8 9 8 6 4 10 7 9 7 5 11 8 4 2 6 8 6 10 8 6 8 9 Calculate a 95% confidence interval for the sample mean. Round your final answer to the hundredth place. What t score was used in calculating your confidence interval for the question above? *Your analysis of the raw data indicates that 13 of 25 students reported sleeping no more than 7 hours per day* Calculate a 95% confidence interval for the sample proportion. Round to the nearest hundredth place.
Next Question A statistics instructor randomly selected four bags of oranges, each bag labeled 10 pounds, and w 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 ley weighed 9.3, 9.1, 9.5, and 9.6 pounds. D Assume below. a. Choose the correct interpretation of the confidence interval below and, if necessary, fill in the answer boxes to complete your choice. O A. We are 95% confident that the sample mean is between and O B. There is a 95% chance that all intervals will be between and O C. We are 95% confident the population mean is between and O 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.) b. Does the interval capture 10 pounds? Is there enough evidence to reject the null hypothesis that the population mean weight is 10 pounds? Explain…
In the table below the miles per gallon of 2007 Ford Taurus car is shown for 13 different owners. Treat the sample as a simple random sample of all 2007 Ford Taurus cars.a. Construct a 95% confidence interval for the mean miles per gallon of a 2007 Ford Taurus. Interpret the interval. 28.5 26.0 21.7 26.3 18.8 24.0 23.423.8 23.5 26.1 28.4 18.0 25.2 b. How large a sample is required to estimate the mean miles per gallon with 0.5 mile per gallon with 95% confidence?
Lo A life satisfaction measure is normally distributed with u = 66. Nine individuals with only a primary education are randomly selected to take the life satisfaction measure. Construct and interpret a 90% confidence interval based on the samples results in the table below. 56 57 60 63 68 63 47 45 63
The EPA tests cars for city miles per gallon (mpg). For one model, a sample of 16 cars were tested for mpg, the results follow. 28 25.7 25.8 28 28.5 29.8 30.2 30.4 26.9 28.3 29.8 27.2 26.7 27.7 29.5 28 Find the 95% confidence interval for mean mpg. Find the 99% confidence interval for mean mpg.
Assume that samples have been randomly selected from normally distributed populations.The table below shows the weights of 9 subjects before and after following a particular diet for two months. Subject A B C D E F G H I Before 169 180 157 133 202 124 190 210 181 After 162 178 145 125 181 126 182 195 163 Construct a 99% confidence interval for the mean difference of the "before" minus "after" weights. Interpret the results.
Please answer the question in the photo
How much noisier are streets where cars travel faster? An article reports noise levels in decibels and average speed in kilometers per hour for a sample of roads. The following table presents the results. Speed 28.26 Noise 78.1 36.22 79.6 38.73 81.0 29.07 78.7 30.28 78.6 30.25 78.2 29.03 33.17 78.4 79.6 Find a 95% prediction interval for the mean noise level for streets whose average speed is 30 kilometers per hour. (Round the final answers to three decimal places.) The 95% prediction interval for the mean is (
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