For a lower-tailed test, the test statistic is found to be 0. The p-value for this test is 0.5 0.025 0.05 -0.5
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- Although the samples are actually related, an investigator ignores this fact in the statistical analysis and uses a t test for two independent samples. How will this mistake affect the probability of a type II error?A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of foodservice workers in the U.S. this year The mean hourly wage last year was $8.08, and there is good reason to believe that this year's value is different from last year's. The union decides to do a statistical test to see if the value has indeed changed. The union chooses a random sample of this year's wages, computes the mean of the sample to be $7.78, and computes the standard deviation of the sample to be $1.10. Based on this information, complete the parts below. (a) What are the null hypothesis Ho and the alternative hypothesis H₁ that should be used for the test? μ X OSO O>0 H₂ : O H₁ :0 0=0 0#0 (b) Suppose that the union decides to reject the null hypothesis. What sort of error might it be making? (Choose one) ▼ (c) Suppose the true mean hourly wage for foodservice workers in the U.S. this year is $8.08. Fill in the blanks to describe a Type I erro A Type I error would be (Choose…According to the College Board, scores on the math section of the SAT Reasoning college entrance test for the class of 2010 had a mean of 516 and a standard deviation of 116. Assume that they are roughly normal.One of the quartiles of the scores from the math section of the SAT Reasoning test is 438. The other quartile is _______.
- A union of restaurant and foodservice workers would like to estimate the mean hourly wage, u, of foodservice workers in the U.S. this year The mean hourly wage last year was $8.08, and there is good reason to believe that this year's value is different from last year's. The union decides to do a statistical test to see if the value has indeed changed. The union chooses a random sample of this year's wages, computes the mean of the sample to be $7.78, and computes the standard deviation of the sample to be $1.20. Based on this information, complete the parts below. (a) What are the null hypothesis H. and the alternative hypothesis H₁ that should be used for the test? H₂ : O H₁ :0 (b) Suppose that the union decides not to reject the null hypothesis. What sort of error might it be making? (Choose one) ▼ (c) Suppose the true mean hourly wage for foodservice workers in the U.S. this year is $8.08. Fill in the blanks to describe a Type I error. A Type I error would be (Choose one) when, in…In a right-tailed test comparing two proportions, the test statistic was zcalc = +1.5. The p-value is:If alpha is 5%, what is the level of confidence in a right-tailed Ztest?
- A Z-test for single population mean is conducted with Ha: H < 10, at significance level of 0.05, The most significant result is suggested by the following test statistic -1.65 2.2 4.7 1.96 O3.7 -4.5Which samples show unequal variances? Use a = .10 in all tests. Show the critical values and degrees of freedom clearly and illustrate the decision rule. s1 = 10.2, n1 = 22, s2 = 6.4, n2 = 16, two-tailed test s1 = .89, n1 = 25, s2 = .67, n2 = 18, right tailed test s1 = 124, n1 = 12, s2 = 260, n2 = 10, left-tailed testThe coach of a very popular men’s basketball team claims that the average distance the fans travel to the campus to watch a game is 35 miles. The team members feel otherwise. A sample of 16 fans who travel to games was randomly selected and yielded a mean of M= 36 miles and s= 5 miles. Test the coach’s claim at the 5% (.05) level of significance. one-tailed or two-tailed test: State the hypotheses: df= tα or t value for the critical region = sM = t (test statistic)= Decision:
- A highly anticipated scl-fl movie opened in theaters with a special midnight showing this past Friday. For the Saturday edition of his town's newspaper, Alan wrote a column about local interest In the movie. He found that the attendance for the midnight showing at his town's theater was 288 people. For all the theaters in the state, attendance at the midnight showing had a mean of 245 people with a standard deviation of 17 people. Find the z-score of the attendance at the theater in Alan's town relative to the attendances among all the theaters in the state. Round your answer to two decimal places. Submit Assignment Continue Privacy Accessibility 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Next » · PreviousAn independent-measures research project has two sample variances, 12 and 6. Calculate the F-Max test for this project. Your answer will be a whole numberConsider a two-tailed test with a level of confidence of 80.30%. What is the z-value?