39. Which of the following probability distribution curves has the lowest peak?A. the standard normal distributionВ.a t-distribution with 10 degrees of freedomC. at-distribution with 15 degrees of freedomD. a t-distribution with 20 degrees of freedom40. What is the degree of freedom in a set of data if the sample size is 197A. 17B. 18C. 19D. 2041. Given an area of 0.01 and degrees of freedom of 9, what is the t-value?C. 2.764A. 2.681B. 2.718D. 2.82142. What is the 90th percentile of the t-distribution with 10 degrees of freedom?В. 1.372A. 1.363С. 1.383D. 1.81243. To what percentile of the t-distribution does 2.583 belong to if the sample size is 17?A. 75hB. 90C. 95hD. 99th44. Which formula is to be used in finding the length of a confidence interval?A. LCI =|LCL-UCLIC. LCI = 2za/2)B.LCI = 2tD. all of them45. What is the length of the confidence interval given the following data: o = 0.5, n = 70,confidence level = 95%?A. 0.17В. О.18C. 0.19D. 0.2346. Which formula is used in determining the minimum size needed when estimating the population mean?Za2A.•nB.C.D.EFor numbers 47 to 49, refer to the given problem.A survey on 200 GAS students of Masipag Senior High School shows that they read on an average of 15. 7hours per week. The margin of error is 2.4 hours at a 95% confidence level.47. What is the value of the margin of error?А. 2.2В. 2.4С. 15.7D. 16.3

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MATLAB: An Introduction with Applications

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The average wait time to get seated at a popular restaurant in the city on a Friday night is 7 minutes. Is the mean wait time greater for men who wear a tie? Wait times for 12 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 9, 5, 5, 7, 8, 5, 7, 7, 9, 5, 6, 9 What can be concluded at the the a = 0.10 level of significance level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: pv = 7 H: pv> c. The test statistic t v = -0.352 (please show your answer to 3 decimal places.) d. The p-value = 0.3657 X (Please show your answer to 4 decimal places.) e. The p-value is >vV a vX the null hypothesis. f. Based on this, we should reject g. Thus, the final conclusion is that ... O The data suggest the populaton mean is significantly more than 7 at a = 0.10, so there is statistically significant evidence to conclude that the population mean wait time…
The average wait time to get seated at a popular restaurant in the city on a Friday night is 7 minutes. Is the mean wait time greater for men who wear a tie? Wait times for 12 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 9, 5, 5, 7, 8, 5, 7, 7, 9, 5, 6, 9 What can be concluded at the the a = 0.10 level of significance level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: P Select an answer H1: pv Select an answer v c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is >v f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that .. O The data suggest the populaton mean is significantly more than 7 at a = 0.10, so there is statistically significant evidence to conclude that the population…
The daily high temperature for the month of August in Chicago is normally distributed with a mean of 70 degrees and a standard deviation of 5 degrees. QUESTION 1 What is the probability that a randomly selected August day in Chicago will have a high temperature below 85 degrees? Use the given normal distribution curve below to help you label and shade the correct picture for this problem. O A. 0.9987 О в. 0.0013 OC.0.4987 O D. 0.0087 Save All Answers Save and Submit Click Save and Submit to saue and submit. Click Save All Answers to save all answers. 6:35 PM e Type here to search 11/30/202 10/05/17 F1 F2 F3 F4 F5 F6 F7 F8 PrtSc Insert Delete F9 F10 F11 F12 C@ & 3 5 6 7 080 9- Backspace Num Lock T Y U 1 PI 00 Home + II S4 LI 2
4. Explain why t distributions tend to be flatter and more spread out than the normal distribution.
22. Student’s t-distribution looks much like the standard normal distribution, but with heavier tail areas. True False
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14

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39. Which of the following probability distribution curves has the lowest peak? A. the standard normal distribution B. at-distribution with 10 degrees of freedom C. at-distribution with 15 degrees of freedom D. at-distribution with 20 degrees of freedom