About 10% of the human population is left-handed. Suppose that a researcher speculates that artists are more likely to be left-handed than are other people in the general population. The researchersurveys 500 artists and finds that 60 of them are left-handed.(a) Define the parameter of interest and give the null value.(b) State the researcher's null and alternative hypotheses.Ho: pHa: P?(c) What proportion of the sample of artists is left-handed?p =(d) To calculate a p-value for the hypothesis test, what probability should the researcher calculate? Make your answer specific to this situation.p ? ✪(e) Choose the formula for the test statistic.The test statistic is =The test statistic is =The test statistic is = =Null ValueNull standard errorSample estimate - Null ValueNull standard errorNull standard errorSample estimate - Null ValueThe test statistic is 2 =Null standard errorThe test statistic is 2 =Sample estimate + Null standart errorSample estimateNull standard error

Parameter of Interest and Null Value:The parameter of interest in this hypothesis testing is the…

Answered: About 10% of the human population is…

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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(c) Calculate the test statistic. d) Decide whether to reject or fail to reject the null hypothesis. Then interpret the decision in the context of the original claim.
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?
A sociologist is interested in the opinion of Minnesota teachers on the recent labor union law passed by Wisconsin lawmakers. a. What is the experimental unit? b.What is the population? c.What are the variables relevant to this study? Classify them as continuous, discrete, nominal, or ordinal. d. Explain how you would select a sample for this study. Explain pros and cons of your method.
Which of the following is a research hypothesis? A. Liberals and conservatives have the same voting rates. B. The rates of that senior citizens receive moving violations are not different from rates of moving violations seen in teenagers. C. White and African Americans watch the same amount of TV. D. Men and women have different levels of income.
During the first few weeks of the new television season, the evening news audience proportions were recorded as ABC - 31%, CBS - 34%, and NBC - 35%. A sample of 800 homes taken recently yielded the following viewing audience data. Number of Homes ABC 305 CBS 255 NBC 240 We want to determine whether or not there has been a significant change in the proportion of viewing audience of the three networks. a. State the null and alternative hypotheses to be tested. b. Compute the expected frequencies. c. Compute the test statistic. d. Determine the p-value for this test. Make a conclusion in the context of this problem
▾ Part 1 of 4 A pharmaceutical company claims their new diabetes medication results in less variance in a patient's glucose level than if the patient were on no medication at all. An endocrinologist wishes to test this claim. She divides participants randomly into two groups. Group A consists of 20 diabetics who received the medication; group B consists of 26 diabetics who received a placebo. After two weeks, the blood sugar level of each patient in each group was measured with the following results (in mg/dL): Group A: 77.8, 229.4, 199.9, 110.1, 180.2, 116.1, 139.7, 171.1, 37.4, 158.1, 88.4, 195.5, 246.1, 142.4, 178.1, 105.5, 179.6, 146.1, 78.8, 123.7 Group B: 124.5, 130.1, 136, 162.8, 113.4, 72.8, 142.6, 50.3, 179.8, 197, 230, 194.3, 171, 109.3, 114.4, 107.5, 114.7, 195.3, 127.7, 126.4, 85.6, 166.7, 182.3, 113.5, 216.7, 162.8 Perform a hypothesis test using a 6% level of significance to test the pharmaceutical company's claim. Step 1: State the null and alternative hypotheses. Ho:…
The following data are from a completely randomized design. In the following calculations, use a = 0.05. Treatment Treatment Treatment 2 3 64 82 69 47 71 53 54 87 60 35 64 46 50 76 57 2 148.67 108.67 96.67
Questions (1)-(2) refer to the following information. A survey was conducted among a randomly-chosen sample of people who owned a cell phone in 2013. The following table shows a summary of the survey results. Owned a Smart Phone Did Not Own a Smart Phone No Response Total 15- to 29-year-olds 28,542 19,116 11,223 58,881 30- to 44-year-olds 33,116 24,308 9,414 66,838 45- to 59-year-olds 11,960 21,405 6,549 39,914 60-year-olds and over 1,023 1,897 862 3,782 Total 74,641 66,726 28,048 169,415 (1)According to the survey results, for which age group did the greatest percentage of people report that they owned a Smart Phone? () A. 15-to 29-year-olds B. 30-to 44-year-olds C. 45-to 59-year-olds D. 60-year-olds and over (2)Of the 15-to 29-year-olds who reported owning a Smart Phone, 500 people were selected at random to do a follow-up survey in which they were asked whether they watched streaming videos on their phones. There were 302 people in this follow-up survey who responded Yes to the…

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