1. Identify test statistic2. Identify p-value3. use technology to construct the confidence interval Treatment PlaceboH1A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do notassume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts.In25402.352.630.940.65a. Test the claim that the two samples are from populations with the same mean.What are the null and alternative hypotheses?O A. Ho: H1 H2O B. Ho: H1 H2The test statistic, t, is |. (Round to two decimal places as needed.)He el x

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Answered: Identify test statistic 2. Identify…

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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study of 420,077 cell phone users found that 133 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 0.0236% 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.
An insurance company collects data on seat-belt use among drivers in a country. Of 1200drivers 20-29years old,31% said that they buckle up, whereas 385 of 1300 drivers 45-64 years old said that they did. Find a 99% confidence interval for the difference between the proportions of seat-belt users for drivers in the age groups 20-29 years and 45-64 years. Question content area bottom Part 1 Construct a 99% confidence interval. The 99% confidence interval for p1−p2 is from enter your response here to enter your response here. (Round to three decimal places as needed.)
Would it be reasonable to develop a confidence interval from these data to show the mean number of hours of TV watched? If yes, construct an appropriate confidence interval and interpret the result. If no, why would a confidence interval not be appropriate?
What is the rejection region for the test (at a=0.05)? concludes that the data provide sufficient evidence to indicate that the mean user maintenance cost does vary among the three state installations. Would we be able to know which two state installations vary? Briefly explain. How can we find a 95% confidence interval for the difference between the mean cost in Texas and the mean cost in Kentucky? If Texas was chosen as base level and a similar model was fit to the data, what would be the value of the estimated intercept?
a) Compare the “prop. contained” value from the chart to the confidence level associated with the simulation in sentence b) Write an interpretation for your confidence interval methods in terms of what would happen if more samples of the same sample size were taken and their respective confidence intervals calculated.
A Pew Research Center report on gamers and gaming estimated that 49% of U.S. adults play video games on a computer, TV, game console, or portable device such as a cell phone. This estimate was based on a random sample of 2001 U.S. adults! Construct and interpret a 95% confidence interval for the proportion of all U.S. adults who play video games. O We are 95% confident that the interval from 0.472 to 0.509 captures p = the proportion of adults in the Pew Research Center report who play video games. O We are 95% confident that the interval from 0.472 to 0.509 captures p = the true proportion of U.S. adults who play video games. We are 95% confident that the interval from 0.468 to 0.512 captures p = the true proportion of U.S. adults who play video games. O We are 95% confident that the interval from 0.468 to 0.512 captures p= the proportion of adults in the Pew Research Center report who play video games. O We are 95% confident that the interval from 0.018 to 0.031 captures p = the true…
Decide whether it describes a confidence interval for a proportion or a confidence interval for a mean. (b) Apply the correct formula to calculate the confidence interval in the format of an estimate + margin of error. During the 2016 season, Mark Williams played in 18 golf matches and used his driver club 126 times, hitting his drives an average of 278 yards per drive, with a standard deviation of 15 yards per drive. Calculate a 95% confidence interval for the distance he was able to hit his driver club in that season.
In a random sample of eleven people, the mean driving distance to work was 24.2 miles and the standard deviation was 4.8 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 99% confidence interval for the population mean p. Identify the margin of error. TO miles (Round to one decimal place as needed.) Construct a 99% confidence interval for the population mean. (Round to one decimal place as needed.) mimm
"Space Mountain Use the following wait times (minutes) for the Space Mountain ride at Disney World ... Construct a 95% confidence interval estimate of the mean of all wait times. Write a statement that interprets the confidence interval. 40, 35, 40, 40, 25, 80, 50, 30, 35, 40"
Choose correct option and explain.

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Identify test statistic 2. Identify p-value 3. use technology to construct the confidence interval