MAA MATHEMATICAL ASSOCIATION OF AMERICAwebwork / f21gmostafam2345s013 / hw9 /8HW9: Problem 8Previous ProblemProblem ListNext Problemmean grade point average greater than 2.3. Sample statistics include(1 point) Test the claim that the population of sophomore college students hasn = 50, x = 2.45, and s = 0.8. Use a significance level of a = 0.05.The test statistic isThe critical value isThe P-Value isThe final conclustion isOA. There is sufficient evidence to support the claim that the mean grade point average is greater than 2.3.OB. There is not sufficient evidence to support the claim that the mean grade point average is greater than 2.3.Note: You can earn partial credit on this problem.Preview My AnswersSubmit AnswersYou have attempted this problem 0 times.You have unlimited attempts remaining.Email instructorPage generated at 11/08/2021 at 03:38pm CSTShow Allus quiz.docxMacBook AirDII80

Given : Claim : The mean grade point average is greater than 2.3.

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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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Professor Jennings claims that only 35% of the students at Flora College work while attending school. Dean Renata thinks that the professor has underestimated the number of students with part-time or full-time jobs. A random sample of 80 students shows that 37 have jobs. Do the data indicate that more than 35% of the students have jobs? Use a 5% level of significance.What are we testing in this problem? single proportionsingle mean (a) What is the level of significance?State the null and alternate hypotheses. H0: p = 0.35; H1: p < 0.35H0: μ = 0.35; H1: μ ≠ 0.35 H0: μ = 0.35; H1: μ < 0.35H0: p = 0.35; H1: p > 0.35H0: p = 0.35; H1: p ≠ 0.35H0: μ = 0.35; H1: μ > 0.35 (b) What sampling distribution will you use? What assumptions are you making? The Student's t, since np < 5 and nq < 5.The Student's t, since np > 5 and nq > 5. The standard normal, since np > 5 and nq > 5.The standard normal, since np < 5 and nq < 5. What is the value of the…
A sample of 63 stocks traded on the NYSE that day showed that 22 went up. You are conducting a study to see if the proportion of stocks that went up is significantly more than 0.3. You use a significance level of a = 0.05. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a Ogreater than a This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... OThere is sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is more than 0.3. O There is not sufficient evidence to warrant rejection of the claim that the proportion of stocks that went up is more than 0.3. The sample data support the claim that the proportion of stocks that went up is more than 0.3. There is not…
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Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of measurements yield x=103.36, y=103.45, r=0.928, P-value= 0.000, and y=−7.2+1.07x,where x represents the IQ score of the older child.Find the best predicted value of y given that the older child has an IQ of 106? Use a significance level of 0.05
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Samples of body temperatures were taken from both men and women. The information from the samples is summarized below. Use a 0.05 significance level to to test the claim that men and women have different mean body temperatures. Men: n₁ = 15; 1 = 98.38° F; s₁ = 0.45°F Women: n2=91; 2 = 98.17°F; $2 = 0.65° F a. On your Work Upload or Calculations page, write down your hypotheses. Label which hypothesis is the claim. b. The test statistic is c. The critical value is . (Round to 3 decimal places.) (Round to 3 decimal places.) d. The p-value is (Round to 3 decimal places.) e. On your Work Upload or Calculations page, show how you made your decision using either the traditional or p-value method. The correct decision is to 1: Reject the null hypothesis, or 2: Fail to reject the null hypothesis. box.) (Type 1 or 2 in the f. On your Work Upload or Calculations page, write your conclusion/results summary. (Use the standard language about evidence and support of claims.)
Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of measurements yield x=101.22, y=102.45, r=0.916, P-value=0.000, and y=−8.44+1.1x, where x represents the IQ score of the older child. Find the best predicted value of y given that the older child has an IQ of 99? Use a significance level of 0.05.
20
i can come up with the correct answer to these two types of problems. I know I am just missing a small piece of it. hypothesist test for single population mean and single population proportion. need to figure out test statistic . and "p" value 2. 20% all college students volunteer their time. is the percentage of college student who are volunteers different for students receiving financial aid? of the 387 randomly selected students who receive financial aid, 58 of them volunteered their time. what can be concluded at the alpha 0.05 level of significance. Need to figure test statistic and "p" value.
I. There are two samples with means 15 and 18. Both of those samples consist of 24 observations. Sample standard deviations are equal to 4 in both cases. If you want to test whether the difference between the mean in the first and the mean in the second population is equal to 0, what is your decision at the .01 level?
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