Target wants to know if their online sales are above what they observed last year during the pandemic. They test Ho: p = 0.45 vs. HA: p > 0.45 and rejectthe null hypothesis. Later they find out that actually 45% of their sales were online. Which of the following is true:Multiple ChoiceType I Error was madeA Correct Decision was made

Given that; A hypothesis is given and a decision is also made. By using hypothesis concept I solve…

Answered: Target wants to know if their online…

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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4.27 please. I already had 4.26 answered. Thank you!
In 2002 a national vital statistics report indicated that about 3.4% of all births produced twins. Is the rate of twin births the same among very young mothers? Data from a large city hospital found only 13 sets of twins were born to 517 teenage girls. Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed. Are the assumptions and the conditions to perform a one-proportion z-test met? Yes No State the null and alternative hypotheses. Choose the correct answer below. A. H0: p=0.034 HA: p>0.034 B. H0: p=0.034 HA: p≠0.034 C. H0: p=0.034 HA: p<0.034 D. The assumptions and conditions are not met, so the test cannot proceed. Determine the z-test statistic. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. z=nothing (Round to two decimal places as…
A concerned consumer believes that they are being cheated in the weight of potato chips per bag. The company claims that every small bag weighs 1 ounce. You weigh 50 different bags of chips and find the average to be .97 ounces. Match the following terms to their meaning in context of this problem. The consumer finds a test result that is NOT statistically significant What is their conclusion?
We have Ho : p = .4 and H1: p > .4. You run 50 experiments and find that the sample proportion is .42. Use alpha = .01 to test the hypothesis.
If you have a research scenario in which the IV has three or more levels and is between subjects in nature with a quantitative DV, then you would use the One Way Between Subjects ANOVA. O True O False
If you have a hypothesis test with alpha = 0.1, which of the following P-Values does NOT imply statistical significance? %3D 0.084 0.005 0.117 0.056 A researcher wants to find out if there is a significant difference between men and women in the average number of tattoos that a person has. After doing the statistical analysis, the researcher finds that the p- value is 0.003. If the chosen significance level is 0.05 (5%), which of the following statements is the best interpretation of this p-value?? | The results are statistically significant. | The results are not statistically significant. | The magnitude of a p-value. has no impact on statistical significance.
Approximately 58% of all people are able to wink with both eyes. Is this percent different for people who wear glasses? A researcher tests 319 people who wear glasses and found that 204 could wink with both eyes. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer z-test for the difference between two population proportions t-test for a population mean z-test for a population proportion t-test for the difference between two dependent population means t-test for the difference between two independent population means The null and alternative hypotheses would be: H0:H0: Select an answer μd p1 p μ1 μ Select an answer ≥ = ≠ ≤ H1:H1: Select an answer μ μ1 p p1 μd Select an answer < ≠ > = The test statistic ? z t = (round to 3 decimal places) The p-value = (round to 4 decimal places) The p-value is ? > ≤ αα. Based on this, we should Select an answer accept reject fail to reject the null hypothesis. Explain…
A new screening test for Lyme disease is developed for use in the general population. The sensitivity and specificity of the new test are 60% and 70%, respectively. Five hundred people are screened at a clinic during the first year the new test is implemented. Assume the true prevalence of Lyme disease among clinic attendees is 10%. Calculate the predictive value of a positive test.
When is a post-hoc test used? (Select all that apply.) a. when you decide to do a within-subjects design b. only if you find differences between all of your group means c.if the ANOVA is statistically significant d. if between-group variability is small e.if the F ratio is greater than the critical value for F
If the test requires that the results be statistically significant at a level of α = 0.05, fill in the blanks and complete the sentences that explain the test decision and conclusion. The decision is to reject the null hypothesis. There is enough evidence at a significance level of a = 0.05 that the mean weight for U.S. women of age 40-49 who smoke daily is less than 169.976 pounds.
The American Society of PeriAnesthesia Nurses (ASPAN; www.aspan.org) is a national organization serving nurses practicing in ambulatory surgery, preanesthesia, and postanesthesia care. The organization consists of the 40 components listed below. State/Region Membership Alabama 73 Arizona 287 Maryland, Delaware, DC 726 Connecticut 128 Florida 801 Georgia 264 Hawaii 50 Illinois 736 Indiana 256 Iowa 136 Kentucky 222 Louisiana 196 Michigan 250 Massachusetts 585 Maine 48 Minnesota, Dakotas 181 Missouri, Kansas 327 Mississippi 114 Nebraska 151 North Carolina 470 Nevada 142 New Jersey, Bermuda 543 Alaska, Idaho, Montana, Oregon, Washington 938 New York 998 Ohio 700 Oklahoma 224 Arkansas 61 California 1,319 New Mexico 56 Pennsylvania 372 Rhode Island 44 Colorado 257 South Carolina 182 Texas…
Professor Nord stated that the mean score on the final exam from all the years he has been teaching is a 79%. Colby was in his most recent class, and his class’s mean score on the final exam was 82%. Colby decided to run a hypothesis test to determine if the mean score of his class was significantly greater than the mean score of the population. α = .01. What is the mean score of the population? What is the mean score of the sample? Is this test one-tailed or two-tailed? Why?

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