Suppose you test the null hypothesis Ho : o? = o against the alternative hypothesisHa:o? + o at a significance level of aabout the p-value of your test?5%. The value of your F-statistic is 2.67. What is trueO The p-value is 5%.O The p-value is P(F > 2.67).O The p-value is less than 5%,O The p-value is 2 P(F> 2.67).

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Answered: Suppose you test the null hypothesis…

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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Test the claim that the mean GPA of night students is smaller than 2.5 at the 0.10 significance level. The null and alternative hypothesis would be: Но:р — 0.625 Но:р 0.625 Но:> 2.5 Но: д %3 2.5 Но: н 0.625 Н:р 2.5 The test is: right-tailed two-tailed left-tailed Based on a sample of 55 people, the sample mean GPA was 2.47 with a standard deviation of 0.03 The p-value is: (to 2 decimals) Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis
Test the claim that the proportion of people who own cats is smaller than 70% at the 0.05 significance level. Based on a sample of 100 people, 69% owned catsThe test statistic is: ? (to 2 decimals)The p-value is: ? (to 2 decimals)
Would you favor spending more federal tax money on the arts? Of a random sample of n1 = 217 women, r1 = 52 responded yes. Another random sample of n2 = 175 men showed that r2 = 48 responded yes. Does this information indicate a difference (either way) between the population proportion of women and the population proportion of men who favor spending more federal tax dollars on the arts? Use ? = 0.05. (a) What is the level of significance? (b) What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.)(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)
you did not answer this Let p be the true proportion of firms with a chief marketing officer currently on their top management team. To conduct the hypothesis test, the null and alternative hypotheses are formulated as: H₀: p̄ p̄ = 0.42'; Haa: p̄ p̄ ≠ 0.42 H₀: p ≥ 0.42; Haa: p < 0.42 H₀: p = 0.42; Haa: p ≠ 0.42 H₀: p ≤ 0.42; Haa: p > 0.42 If the null hypothesis is true, the sampling distribution of the sample proportion p̄ p̄ can be approximated by a _____ with a mean ______ and a standard deviation of ____ . The test statistic is _____ .
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9687#/skip/4 The FDA regulates that fish that is consumed is allowed to contain 1.0 mg/kg of mercury. In Colorado, bass fish were collected in 52 different lakes to measure the amount of mercury in the fish. The data for the average amount of mercury in each lake is in the table. Do the data provide enough evidence to show that the fish in Colorado lakes has more mercury than the allowable amount? Test at the 5% level. Average Mercury Levels (mg/kg) in Fish 0.54 1.82 0.98 0.76 0.75 0.44 1.4 0.36 1.58 1.12 1.1 1.63 1.37 1.21 0.85 1.14 1.24 1.26 1.06 1.18 1.11 0.95 0.6 1.05 1.27 1.52 1.14 0.91 1.05 0.95 1.25 1.01 1.02 1.35 0.96 0.91 1.13 1.59 1.84 1.51 1.04 1.54 1.62 1.01 1.43 1.01 1.32 0.85 1.7 0.8 1.22 0.9 State the hypotheses. Ho: µ ? Hg: ? Find the point estimate. Round to three decimal places. = FInd the test statistic. Round to three decimal places. t = Find the p-value. Round to four decimal places. p-value = State your decision. O Since the p-value is greater than 0.05, reject…
You are performing a two-tailed significance test on a proportion and you calculate z-value of2.43. The p-value isa. 0.00375b. 0.0075c. 0.0150d. 0.9925e. 0.9963
After the political ad campaign, pollsters check the mayor's positives. They test the hypothesis that the ads produced no change against the alternative that the positives are now above 47% and find a P-value of 0.283. Which conclusion is appropriate? Explain. Choose the correct answer below. O A. There is a 28.3% chance that natural sampling variation could produce poll results at least as far above 47% as these if there is really no change in public opinion. There is a 28.3% chance that the poll they conducted is correct. O B. O C. There is a 71.7% chance that the ads worked. O D. There is a 28.3% chance that the ads worked.
Would you favor spending more federal tax money on the arts? Of a random sample of n1 = 204 women, r1 = 70 responded yes. Another random sample of n2 = 178 men showed that r2 = 48 responded yes. Does this information indicate a difference (either way) between the population proportion of women and the population proportion of men who favor spending more federal tax dollars on the arts? Use ? = 0.05. (a) What is the level of significance?State the null and alternate hypotheses. H0: p1 = p2; H1: p1 > p2H0: p1 = p2; H1: p1 < p2 H0: p1 = p2; H1: p1 ≠ p2H0: p1 < p2; H1: p1 = p2 (b) What sampling distribution will you use? What assumptions are you making? The standard normal. We assume the population distributions are approximately normal.The Student's t. The number of trials is sufficiently large. The standard normal. The number of trials is sufficiently large.The Student's t. We assume the population distributions are approximately normal. What is the value of the sample…

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