The mean height of women over twenty years of age is 63.7 inches. A researcher conducts a hypothesis test to find out if the mean height of women over twenty in Texas is greater than 63.7 inches. The researcher obtains a random sample of 45 women over twenty in Texas.computes a sample mean height of 64 5 inches, and determines the P-value is 0.11.(a) Explain what the researcher's P-value represents(b) Write a conclusion for this hypothesis test assuming an a-0.10 level of significance.B 1 USIEEED1x₁Insert Formula

Mean height, The researcher wants to test the hypotheses,Sample size, Sample mean, p-value for the…

Answered: The mean height of women over twenty…

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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Make a conclusion regarding the hypothesis .
Do female college students spend more time than male college students watching TV? This was one of the questions investigated by the authors of an article. Each student in a random sample of 46 male students at a university in England and each student in a random sample of 38 female students from the same university kept a diary of how he or she spent time over a three-week period. n USE SALT For the sample of males, the mean time spent watching TV per day was 68.3 minutes and the standard deviation was 67.5 minutes. For the sample of females, the mean time spent watching TV per day was 93.8 minutes and the standard deviation was 89.1 minutes. Is there convincing evidence that the mean time female students at this university spend watching TV is greater than the mean time for male students? Test the appropriate hypotheses using a = 0.05. (Use umales - Hiemales: Round your test statistic to one decimal place, your df down to the nearest whole number, and your P-value to three decimal…
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Use the random sample data to test the claim that the mean travel distance to work in California is less than 35 miles. Use 1% level of significance. Sample data: x¯=32.4 mis=8.3 min=35 Identify the tail of the test. Find the P-value Will the null hypothesis be rejected? Is the initial claim supported?
A forester is studying the number of cavity trees in old-growth stands in Adirondack Park in northern New York. He wants to know if there is a significant difference between the mean number of cavity trees in the Adirondack Park and the old-growth stands in the Monongahela National Forest. He collects two independent random samples from each forest. Use a 5% level of significance to test this claim. , compute for the test statistics t. Monongahela Forest Adirondack Park n2 = 56 stands n = 51 stands X2 - 43.9 X1 = 39.6 s2 = 10.7 s1 = 9.4
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THE ANSWER IS NOT 800.9, 800.8, 800.80 or 780.2 or 801. I tried this question numerous times and it's all wrong.
A teacher collects the following data from 5 college students regarding the number of times they drank alcohol in the last 30 days. We know that the population of college students drink a mean of 4.0 days in the last 30 days (i.e., this is the population mean). Is the mean level in the sample significantly different from the population mean? data: 6,5, 7, 6, 4 - what type of error might you be making - interpret effect size
A random sample of 33 professional baseball salaries from 1985 through 2015 was selected. The league of the player (American or National) was also recorded. Salary (in thousands of dollars) and league are shown in the accompanying table. Test the hypothesis that there is a difference in the mean salary of players in each league. Assume the distributions are Normal enough to use the t-test. Use a significance level of 0.05. Click the icon to view the data table. --..- Determine the hypotheses for this test. Let u, be the population mean salary of players in the American League and let pn be the population mean salary of players in the National League. Choose the correct answer below. O B. Ho: Ha = Hn O C. Ho: Ha = Hn Ha: Ha > Hn A. Ho: Ha = Hn. Ha: Ha + Hn Ha: Ha Hn Ha: Ha = Hn Ha: Ha = Hn Ha: Ha = Hn Find the test statistic for this test. t= (Round to two decimal places as needed.)
Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The mean shopping time, μ, spent by customers at the supermarkets has been reported to be 38 minutes, but executives have good reason to believe that u is different from 38 minutes. The executives hire a statistical consultant and ask her to perform a statistical test. To perform her statistical test, the consultant collects a random sample of shopping times at the supermarkets. She computes the mean of these times to be 44 minutes and the standard deviation of the times to be 10 minutes. Based on this information, complete the parts below. (a) what are the null hypothesis Ho and the alternative hypothesis H₁ that should be used for the test? Ho H₁ :0 (b) Suppose that the consultant decides not to reject the null hypothesis. What sort of error might she be making? (Choose one) ▼ (c) Suppose the true mean shopping time spent by customers at the supermarkets is…
The amount of sodium(in milligrams) in one serving for a random sample of three different kinds of foods is listed here. At the 0.05 level of significance, is there sufficient evidence to conclude that a difference in mean sodium amounts exists among condiments, cereals, and desserts?

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