2. In the 1st semester, Ms. Manimtim discovered that her advisory class had an averagegrade of less than 70% in their Pre-Calculus course. However, she believed that herstudents performed well during the discussion and decided to apply hypothesis testing todetermine if this claim was true. She got a random sample of 15 students which resultedwith a mean of 87.3 and standard deviation of 6.3. (Use p-value)

Given that Sample size n =15 Sample mean=87.3 Standard deviation =6.3

Answered: In the 1st semester, Ms. Manimtim…

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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humans is 98.6°F. However, two researchers currently involved in the subject thought that the mean temperature of humans is less than 98.6°F. They measured the temperatures of 61 It has long been stated that the mean temperature healthy adults 1 to 4 times daily for 3 days, obtaining 275 measurements. The sample data resulted in a sample mean of 98.3°F and a sample standard deviation of 1°F. Use the P-value approach to conduct a hypothesis test to judge whether the mean temperature of humans is less than 98.6°F at the a = 0.01 level of significance. State the hypotheses Họ: H 98.6°F H: H 98.6°F Find the test statistic. (Round to two decimal places as needed.) The P-value is. (Round to three decimal places as needed.) What can be concluded? What can be concluded? A. Reject Ho since the P-value is not less than the significance level. B. Reject Ho since the P-value is less than the significance level. C. Do not reject H, since the P-value is not less than the significance level. D. Do…
Students in the senior capstone course (N=36) at Central State University took the Political Science subtest developed by the National Board Testing Association. The test is a 75-item, multiple choice test covering all areas of political science. The national norms for the test show a mean of 50. The mean for the students in the capstone course was 55, with a standard deviation of 15. Did the students at CSU score significantly higher than the national average? State your null and alternative hypothesis Is this a one-or-two tailed hypothesis? Explain thoroughly. Calculate the appropriate statistical test. Can you reject the null hypothesis? Why or why not?
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The average number of calories from a fast food meal for adults in the US is 842 calories. A nutritionist believes that the average is higher than reported. They sampled 32 meals that adults ordered and found the sample mean to be 858 calories with a standard deviation of 49 calories. What are the null and alternative hypotheses?
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People who diet can expect to lose an average of 3kg in a month. In a book, the authorsclaim that people who follow a new diet will lose an average of less than 3kg in a month.The weight losses of the 180 people in a random sample who had followed the new dietfor a month were noted. The mean was 2.7 kg and the standard deviation was 2.8kg.Test the authors’ claim at the 5% significance level, stating your null and alternativehypotheses. From a sample of 200 bread rolls from Ideal bakery, 95 of the were wheat. The managerof the bakery claims that 49% of their rolls are wheat.i. Test at the 1% significance level to determine whether the true proportion is lessthan 49%. ii. Create a 99% confidence interval for the proportion of all wheat bread rollsproduced from Ideal bakery

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