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Explain one sample Z test for p-value approach. Find out the test statistic P-value, and critical value, and state the final conclusion. The mean IQ score of statistic professors is less than 120. Sample data: n = 46. Suppose that = 17, and the significance level is = 0.05.
Compute the test statistic. (Round to the nearest hundredth)
Find the P-value. (Round to four decimal places)
Find the critical value. (Round to the nearest thousandth)Choose the final conclusion
A. There is enough evidence to support claimB. There is insufficient evident to support claim
Make use of normal probability distribution features of EXCEL to help determine the probability.
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To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below.
Obtain a test statistic and p -value assuming equal variances. Interpret these results.
What factors might cause the company to order a larger or smaller amount than the EOQ?
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
Test to see if the mean cell phone bill has changed since 2004. Use a .05 level of significance for the test.
The scores of college-bound senior men on the math part of the SAT followed a normal distribution with mean 527 and standard deviation 116.
IS there any evidence that a freshman's chances to graduate may depend upon what kind of high school the student attended? Describe.
The Greenberg public hearing meeting turned stormy. Citizens from four suburbs were gathered at city hall to try to get the city's federal funds for their own suburbs. The government recently awarded $750,000 to the city for road improvements. The..
The 'interaction effect' was also important. By using the means in the table above write a statement explaining how the anti-anxiety drug appears to affect anxiety. Are the outcomes consistent with the hypothesis proposed by the researchers?
Forecast the number of deliveries utilizing exponential smoothing constant for different values also compare it. A hospital records the number of floral deliveries its patients receive every day.
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