-Find the correct null hypothesis and for each correct alternative hypothesis 3. Suppose you hear a claim that the average score on a national exam is 78. You think the average is higher than that. Set up your null and alternative hypotheses.
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- Last year's mean hourly wage (in dollars) for all hospital clerical workers in a large state was 8. An administrator for the state believes that this year's mean hourly wage for hospital clerical workers is greater than last year's mean. She hires statisticians to sample a number of hospital clerical workers and to carry out a hypothesis test. State the null hypothesis H, and the alternative hypothesis H, that would be used for this test. H. 文 H. OO ロ=ロ ローロThe manager at Costello Drug Store assumes the company’s employees are honest. However, there have been many shortages from the cash register lately. There is only one employee who could have taken money from the register during these periods. Realizing that the shortages might have resulted from the employee inadvertently giving incorrect change to customers, the employer does not know whether to forget the situation or accuse the employee of theft. In words, what are the null and alternative hypotheses? Explain your choices.3.1 What constitutes a Type 1 error 3.2 What is a Type II error? Which do you think is more serious? Explain. 3.3 A new internet provider claims that using their system you can get transmission speeds of 400 kilobits per second. Specify, both statistically and in English, the null and alternative hypotheses a potential customer should investigate if she is worried that the connection is really slower than advertised. Explain your reasoning. 3.4 The system is…-Find the correct null hypothesis and for each correct alternative hypothesis 8. Suppose you test the hypothesis that Intervention A is more effective than Intervention B in preventing high school dropout. How would you word the null and alternative hypotheses?
- first picture is the background informationSuppose that a hypothesis test is performed at a small significance level. State the appropriate conclusion in each case by referring to Key Fact 2. a. The null hypothesis is rejected.b. The null hypothesis is not rejected.You may need to use the appropriate appendix table or technology to answer this question. In 2012, seventy percent of Canadian households had an internet connection. A sample of 320 households taken in 2013 showed that 76% of them had an internet connection. We are interested in determining whether or not there has been a significant increase in the percentage of the Canadian households that have internet connections. (a) State the null and alternative hypotheses to be tested. (Enter != for as needed. Let p be the proportion of all Canadian households with internet connections.) H₂₂: H₂: (b) Compute the test statistic. (Round your answer to two decimal places.) (c) The null hypothesis is to be tested at the 5% level of significance. Determine the critical value(s) for this test. (Round your answer(s) to two decimal places. If the test is one-tailed, enter NONE for the unused tail.) test statistic s test statistic 2 (d) What do you conclude? O Do not reject H. We can conclude that there…
- Pavan3. A claim is made that the proportion of college students who have Netflix accounts is 0.85. Noah believes this claimed value is too high. He is able to survey a random sample of 240 college students, and he finds that the sample proportion who have Netflix accounts is 0.82. Noah proceeds to use this data to conduct a hypothesis test. Based on this information, which one of the following statements is correct? A. The p-value will be smaller than 0.01 but larger than 0. B. The p-value will be between 0.01 and 0.05. C. The p-value will be between 0.05 and 0.10. D. The p-value will be larger than 0.10.in this exercise, we are conducting many hypothesis tests to test a claim. assume that the null hypothesis is true. if 1100 tests are conducted using a significance level of 5. approximately how many of the tests will incorrectly significance
- On the first blank before each number, draw a happy face if the pair of hypotheses is correct and a sad face if the pair is incorrect. If incorrect, write the correct ALTERNATIVE hypothesis in symbols on the second blank.please answer 4 and 5 sub-units thank you!A claim is made that the proportion of college students who have Netflix accounts is 0.92. Mateo believes this claimed value is too high. He is able to survey a random sample of 180 college students, and he finds that the sample proportion who have Netflix accounts is 0.88. Mateo proceeds to use this data to conduct a hypothesis test. Based on this information, which one of the following statements is correct? The P-value will be smaller than 0.01 but larger than 0. The P-value will be between 0.01 and 0.05. The P-value will be between 0.05 and 0.10. The P-value will be larger than 0.10. The P-value will be negative.2005 9.135 Kicking the cigarette habit. Can taking an antidepressant drug help cigarette smokers kick their habit? The New England Journal of Medicine (Oct. 23, 1997) published a study in which 615 smokers (all of whom wanted to give up smoking) were randomly assigned to receive either Zyban (an antidepressant) or a placebo (a dummy pill) for six weeks. Of the 309 patients who received Zyban, 71 were not smoking one year later. Of the 306 patients who received a placebo, 37 were not smoking one year later. Conduct a test of hypothesis (at a = posed in the first sentence of this exercise. 9.138 .05) to answer the research question
