A certain breed of rat shows a mean weight gain of 65g during the first 3 months of life. A randomsample of 34 rats of this breed are fed a new diet from birth until age 3 months. These 34 rats havea mean weight gain of 60.75g and a standard deviation of 3.84g. We are interested in testingwhether there is reason to believe, at the 0.05 significance level, that the new diet is causing achange in the average amount of weight gained in this breed of rats.By comparing the test statistic and the critical value, what conclusion can we draw at the0.05 significance level?Since the test statistic is more extreme than the critical value, we reject the null hypothesis. We havestatistically significant evidence to conclude that average weight gain during the first 3 months of acertain breed of rat's life on the new diet is not equal to 65g.Since the test statistic is NOT more extreme than the critical value, we fail to reject the nullhypothesis. We do not have statistically significant evidence to conclude that average weight gainduring the first 3 months of a certain breed of rat's life on the new diet is not equal to 65g.

In this case, the null hypothesis (H0) is that the mean weight gain of the rats on the new diet is…

Answered: A certain breed of rat shows a mean…

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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A college entrance exam company determined that a score of 23 on the mathematics portion of the exam suggests that a student is ready for college-level mathematics. To achieve this goal, the company recommends that students take a core curriculum of math courses in high school. Suppose a random sample of 250 students who completed this core set of courses results in a mean math score of 23.2 on the college entrance exam with a standard deviation of 3.7. Do these results suggest that students who complete the core curriculum are ready for college-level mathematics? That is, are they scoring above 23 on the mathematics portion of the exam? Complete parts a) through d) below. Click the icon to view the table of critical t-values. ... (a) State the appropriate null and alternative hypotheses. Fill in the correct answers below. The appropriate null and alternative hypotheses are H,: versus H,: (Type integers or decimals. Do not round.) (b) Verify that the requirements to perform the test…
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