Which of the following is the correct conclusion for the hypothesis test?O A. Reject Ho; the data do not provide sufficient evidence to conclude that x is useful forpredicting y.B.Do not reject Ho; the data do not provide sufficient evidence to conclude that x is useful forpredicting y.Reject Ho; the data provide sufficient evidence to conclude that x is useful for predicting y.O C.O D.Do not reject Ho; the data provide sufficient evidence to conclude that x is useful forpredicting y.b. Find a 95% confidence interval for the slope of the population regression line.The 95% confidence interval for B₁ is from to(Round to three decimal places as needed.) For the data and sample regression equation shown below, do the following.a. Decide, at the 5% significance level, whether the data provide sufficient evidence to conclude thatx is useful for predicting y.b. Find a 95% confidence interval for the slope of the population regression line.23 1030 -42y=-3+1.2x, x₁ = 10, x² = 30, b₁ = 1.2, and se = 3.0659Xy41a. What are the hypotheses for the test?O A. Ho: B₁ = 0 and H₂: B₁ #0OB. Ho: B₁ = 0 and H₂: B₁ >0OC. Ho: B₁ = 0 and H₂: B₁ <0O D. Ho: B₁ #0 and H₂: B₁ = 0What is the test statistic?(Round to two decimal places as needed.)Find the P-value.P-value= (Round to three decimal places as needed.)

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Answered: hich of the following is the correct…

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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Identify the conclusion for this hypothesis test. O A. Fail to reject Hn. There is not sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. B. Fail to reject Ho- There is sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. C. Reject Hg. There is sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. O D. Reject Ho. There is not sufficient evidence to warrant support of the claim that more than 20% of users develop nausea.
A certain statistics instructor participates in triathlons. The accompanying table lists times (in minutes and seconds) he recorded while riding a bicycle for five laps through each mile of a 3-mile loop. Use a 0.05 significance level to test the claim that it takes the same time to ride each of the miles. Does one of the miles appear to have a hill? a. Determine the null and alternative hypotheses. b. What is the conclusion for this hypothesis test?
The numbers of successes and the sample sizes for independent simple random samples from two populations are provided for a right-tailed test. Use a 90% confidence interval. Complete parts (a) through (d). X1 = 25, n, = 30, x2 = 17, n, = 70, a = 0.05 Click here to view a table of areas under the standard normal curve for negative values of z. Click here to view a table of areas under the standard normal curve for positive values of z. a. Determine the sample proportions. Determine the sample proportion p1. p = (Round to three decimal places as needed.) Determine the sample proportion p2. P2 = (Round to three decimal places as needed.) Determine the pooled sample proportion p,. (Round to three decimal places as needed.) b. Decide whether using the two-proportions z-procedures is appropriate. Check that the assumptions are satisfied. Select all that apply. A. The assumptions are satisfied, so using the procedures is appropriate. B. Since x, is less than 5, using the procedures is not…
Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company claims that the percentage of blue candies is equal to 25%. Use a 0.05 significance level to test that claim. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho:p=0.25 H1:p>0.25 О В. Но: р#0.25 H1:p=0.25 Ос. Но р-0.25 H1:p<0.25 O D. Ho: p= 0.25 H1:p#0.25 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.)
I. M. Schurr claims that students enjoy online classes more than professors. In order to test his claim, Schurr takes a sample of 60 students and determines 80% of the students enjoy online classes. For a sample of 40 professors, Schurr finds that 55% of the professors enjoy online classes. Do the data support Schurr’s claim that students enjoy online classes more than professors? a. State the null and alternative hypothesis that would be used to test whether students enjoy online classes more than professors.b. What is the appropriate test statistic?c. Determine the critical value(s) for this test using a 1% significance level.d. Calculate the value of the test statistic.e. What is your decision and conclusion?
When is a researcher at risk of making a Type II error? a. whenever H0 is rejected b. whenever H1 is rejected c. whenever H0 fails to be rejected d. The risk of a Type II error is independent of the decision from a hypothesis test.
21
A consumer magazine wants to figure out which of two major airlines lost a higher proportion of luggage on international flights. The magazine surveyed Standard Air (population 1) and Down Under airlines (population 2). Standard Air lost 45 out of 600 bags. Down Under airlines lost 30 of 500 bags. Does Standard Air have a higher population proportion of lost bags on international flights? Which of the following is the correct competing hypotheses?
a. If the new drug testing were to be placed in a test of hypothesis framework, would the null hypothesis be that the drug is safe or unsafe? The alternative hypothesis? b. Given the choice of null and alternative hypotheses in part a, describe Type I and Type II errors in terms of this application. Define a and ß in terms of this application. c. If the FDA wants to be very confident that the drug is safe before permitting it to be marketed, is it more important that a or ß be small? Explain.
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

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