You may need to use the appropriate appendix table or technology to answer this question. This exercise is based on the following information, gathered from student testing of a statistical software package. Students were asked to complete certain tasks using the software, without any instructions. The results were as follows. (Assume that the time for each task is normally distributed.) Mean Time (minutes) Standard Deviation Task Task 1: Descriptive Analysis of Data 11.1 Task 2: Standardizing Scores 11.6 Task 3: Poisson Probability Table 8.3 Task 4: Areas under Normal Curve 9 7 0.9 5.5 Assuming that the time it takes a student to complete each task is independent of the others, find the probability that a student will take at least 11 minutes to complete each of Tasks 1 and 2. (Round your answers to four decimal places.) Task 1 Task 2

Q: question 19

A: a)The two methods to test the difference in mean are: z-test t-test

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Q: question 32

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A:

Q: Question 5

A: From the provided information, Number of trials (n) = 100 Probability of getting tails (p) = 0.5

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Q: Question 7 B

A: