The mean SAT score in mathematics, u, is 545. The standard deviation of these scores is 39. A special preparation course claims that itsgraduates will score higher, on average, than the mean score 545. A random sample of 27 students completed the course, and their mean SATscore in mathematics was 566. Assume that the population is normally distributed. At the 0.01 level of significance, can we conclude that thepreparation course does what it claims? Assume that the standard deviation of the scores of course graduates is also 39.Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult alist of formulas.) (a) State the null hypothesis H and the alternative hypothesis H .HoH :0(b) Determine the type of test statistic to use.(Choose one)(c) Find the value of the test statistic. (Round to three or more decimal places.)(d) Find the critical value. (Round to three or more decimal places.)(e) Can we support the preparation course's claim that its graduates score higherin SAT?O Yes ONo

We have to complete hypothesis testing.....

a) State the null hypothesis H, and the alternative hypothesis H1: H, :0 H :0 b) Determine the type of test statistic to use. |(Choose one) c) Find the value of the test statistic. (Round to three or more decimal places.) d) Find the critical value. (Round to three or more decimal places.) e) Can we support the preparation course's claim that its graduates score higher in SAT? O Yes ONo

a) State the null hypothesis H, and the alternative hypothesis H1: H, :0 H :0 b) Determine the type of test statistic to use. |(Choose one) c) Find the value of the test statistic. (Round to three or more decimal places.) d) Find the critical value. (Round to three or more decimal places.) e) Can we support the preparation course's claim that its graduates score higher in SAT? O Yes ONo

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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Hi, I am working on a project about hypothesis testing. I attached a photo of the data set and a photo of the questions I need help with. H0: μ = 66.5 Ha: μ ≠ 66.5
a) Carefully define the null and alternative hypotheses of the ?2 test of the above table. b) Find the missing values ‘*’, ‘**’, ‘***’ ??, ??? c) What is the conclusion of this test? Give reasons for your answer.
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A driving instructor is investigating whether the time a driver spends in a driver’s education course improves their score on the driver’s test. The instructor randomly selected 10 drivers from a driver’s education course and recorded the number of hours each driver attended the driver’s education course and their corresponding score on the driver’s test. Assuming all conditions for inference are met, which of the following significance tests should be used for the investigation? A. A chi-square test of independence B. A two-sample t-test for a difference between means C. A two-sample z-test for a difference between proportions D. A linear regression t-test for slope E. A matched pairs t-test for a mean difference
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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 150 students who completed this core set of courses results in a mean math score of 23.7 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 math portion of the exam? Complete parts a) through d) below. a) State the appropriate null and alternative hypotheses. Fill in the correct answers below. The appropriate null and alternative hypotheses are Ho: versus H,: b) Verify that the requirements to perform the test using the t-distribution are satisfied. Check all that apply. A. The students were randomly sampled. B. The…
Test the claim that the proportion of men who own cats is significantly different than 50% at the 0.02 significance level.a.) The null and alternative hypothesis would be: b.) The test is: right-tailed left-tailed two-tailed Based on a sample of 60 men, 59% owned cats c.) The sample proportion ˆp=d.) The test statistic is: (to 2 decimals)e.) At α=α=0.02, the critical value is:± (to 2 decimals)f.) Based on this we: Reject the null hypothesis Fail to reject the null hypothesis
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Answer for all the parts for the question in the picture B) What is the test statistic? (2 decimal places) C) The P-value is? (round to 3 decimal places) D) What is the correct conclusion for the hypothesis test?
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Can you help me fill in the blanks? I am stuck
Students in a Psychology Stats class gathered 1st and 2nd year university students to gather self-report data on UFO, sightings during the past year. A year later the same students took the survey after taking LSD. The results of the self-report survey are as follows: Participant ID UFO sightings UFO sightings before LSD after LSD 1 1 2 1 3 2 2 4 1 3 3 1 7 3 A) State the Null and Alternative Hypothesis. B) Find the calculated "t" value and the critical "t" value C) State weather to accept or reject the Null Hypothesis