2. The president of a university would like to know the average commuting time of the students when travelling to school. To do this, he asked a researcher to gather data from 100 students. The sample mean was found out to be 34.05 minutes and the standard deviation to be 9.50 minutes. At a confidence level of 90 percent, what is the confidence interval that can estimate the population mean?

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Q: A USE SALT (a) P(0 sZ S 2.01) 0.4778 (b) P(0 SZS 2) 0.4772 (c) P(-2.90 szZ 0) (d) P(-2.90 s Z S 2.90...

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Q: A sample consists of the following n = 5 scores: 10 4 3 7 3 Compute the mean and standard deviation...

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Q: PART C. Perform the steps of hypothesis testing on the following situations related to the dataset y...

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Q: than one percentage point? (a) Assume that nothing is known about the percentage of computers with W...

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Q: Example 1 The mean height of 45 students ofa class is 60" and the mean height of 55 studen of anothe...

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Q: Example 1 The mean height of 45 students ofa class is 60" and the mean height of 55 students of anot...

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Q: (g) P(-1.90 <Z S 2.00) 0.9985 (h) P(1.66 <Z S 2.50) 0.0422 (i) P(1.90 < Z) (j) P(|Z| < 2.50)

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Q: staurant. If X has an exponential distribution with 1 = 10, compute the following: ) The expected ti...

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Q: On a certain test, the average passing score is 72 while the average failing score is 50. If the ave...

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Q: Suppose x has a distribution with ? = 78 and ? = 8.   Find P(74 ≤ x ≤ 79). (Round your answer to fou...

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Q: Еxample 6 Find Quartile Deviation for the following distribution: Classes 2-4 4-6 6-8 8- 10 10-12 To...

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Q: and a. Complete the probability tree. b. Compare P(S|D1) and P(S|D2). Which diet plan seems to be mo...

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