Suppose a university advertises that its average class size is 31 or less. A student organization is concerned that budget cuts have led to increased class sizes andwould like to test this claim. A random sample of 42 classes was selected, and the average class size was found to be 32.5 students. Assume that the standarddeviation for class size at the college is 8 students. Using a = 0.05, complete parts a and b below.a. Does the student organization have enough evidence to refute the college's claim?Determine the null and alternative hypotheses.Ho: H

We have given that the university advertises that its average class size is 31 or less.

Answered: a. Does the student organization have…

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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The national average SAT score is roughly 1500. We would like to see if the high school seniors who apply to Duke have higher than average SAT scores. We randomly sample 100 applicants' files and record their SAT scores. Which of the following is the correct set of hypotheses for this research question? Hint: think about how many samples we have data from. H0: μ = 1500; HA: μ ≠ 1500 H0: p = 1500; HA: p > 1500 H0: μ Duke= μ National; HA: μ Duke> μ National H0: x = 1500; HA: x > 1500 H0: μ = 1500; HA: μ > 1500
5 O Ĵ Ⓒ GeoGebr X Ho: ? a) Identify the null and alternative hypotheses? 533 93 C www.myopenmath.com/assess2/ O My files - OneDrive South Puget Sound.... Funimation - Watch... Sy Graphing Calculato... m HBO Max You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to patients with the flu and say that nausea is a side effect if people become nauseous. This is because nausea is common for people who have the flu. From past studies you know that about 33% of people who get the flu experience nausea. You collected data on 2371 patients who were taking Tamiflu to relieve symtoms of the flu, and found that 841 experienced nausea. Use a 0.01 significance level to test the claim that the percentage of people who take Tamiflu for the relief of flu symtoms and experience nausea is greater than 33%. *.** ▸ Ezra Mill X HH Chief Be X V H₁: ? V b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? Oleft-tailed Gcrack ho X…
Please use the five steps in hypothesis testing. (a) Meteorology: Storms Weatherwise is a magazine published by the American Meteorological Society. One issuegives a rating system used to classify Northeaster storms that frequently hit New England and can cause muchdamage near the ocean. A severe storm has an average peak wave height of μ=16.4 ft for waves hitting the shore. Suppose that a Northeaster is in progress at the severe storm class rating. Peak wave heights are usually measured from land (using binoculars) off fixed cement piers. Suppose that a reading of 36 waves showed on average wave height of x̄=17.3 ft. Previous studies of severe storms indicate that σ=3.5 ft. . Does this information suggest that the storm is perhaps temporarily increasing above the severe rating? Use a=0.01
A medical journal published new medical research about diastolic blood pressure. Let the mean diastolic blood pressure reading be u mmHg. If a doctor wants to know if the new medical research discussed in the journal results in diastolic blood pressure readings that are, on average, less than 75 mmHg, what are the null and alternative hypotheses? Select the correct answer below: Ho: µ = 75; Ha:H 75 %3D O Ho: µ = 75; Ha: µ + 75
the national average SAT score is roughly 1500. We would like to see if the high school seniors who apply to Duke have higher than average SAT scores. We randomly sample 100 applicants' files and record their SAT scores. Which of the following is the correct set of hypotheses for this research question? Hint: think about how many samples we have data from. H0: μ = 1500; HA: μ ≠ 1500 H0: p = 1500; HA: p > 1500 H0: x = 1500; HA: x > 1500 H0: μ Duke= μ National; HA: μ Duke> μ National H0: μ = 1500; HA: μ > 1500
C. Given a and the z-values. Indicate whether the decision is to reject the null hypothesis or accept the null hypothesis for each of the following. Use a = .05 0.05, z = 2.5, two-tailed 9. a – 0.05, z = -1.645, one-tailed 10. a – 0.01, z = -3.7, two-tailed 8. a –
The average wait time to get seated at a popular restaurant in the city on a Friday night is 13 minutes. Is the mean wait time less for men who wear a tie? Wait times for 16 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 11, 14, 14, 14, 13, 13, 10, 11, 10, 10, 12, 10, 12, 14, 13, 11 What can be concluded at the the a = 0.05 level of significance level of significance?
Let population 1 represent teenagers. Let population 2 represent young adults. A person collected two independent, random samples to test if the average teenager get enough sleep per week is more than the average number of sleep that a young adult gets per week. The following hypotheses were used: Ho:μ1 = μ2 Ha: μ1> μ2 The hypothesis test will completed the using significant level .05. Random samples, one from each population, were selected. The resulting study produced a p-value = .265. 1.) What conclusion should the person draw in regard to the study between teenagers and young adults. Sum up your results. 2.) A p-value= .265 would be considered a.) High significant b.) Not significant c.) Little information to tell.
156% of studentss entering four-year colleges receive a degree within six years. Is this percent larger than for students who play intramural sports? 183 of the 286 students who played intramural sports received a degree within six years. What can be concluded at the level of significance of a = -0.10 a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: 7 v ||Select an answer V (please enter a decimal) H [?v||Select an answer v (Please enter a decimal) c. The test statistic 7v (please show your answer to 3 decimal places.) d. The p-value (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer vthe null hypothesis. g. Thus, the final conclusion is that ,
I need help understanding the null hypothesis and when to “reject” or “fail to reject” it. I got 5.77 in 3df and a critical value of 7.82.
None
The average fruit fly will lay 394 eggs into rotting fruit. A biologist wants to see if the average will change for flies that have a certain gene modified. The data below shows the number of eggs that were laid into rotting fruit by several fruit flies that had this gene modified. Assume that the distribution of the population is normal. Round your mean and standard deviation to three decimal places when doing these calculations. 376, 400, 402, 362, 386, 400, 368, 391, 399, 407, 384, 384, 371, 371 Download CSV What can be concluded at the the a = 0.01 level of significance level of significance?

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a. Does the student organization have enough evidence to refute the college's claim? Determine the null and alternative hypotheses. Ho: H H,: µ v