### Question Description

must show work for all 9 questions. Will attach assignment, please be familiar with standard deviation, probability...must be done in a hour.

## Final Answer

Attached.

Question 1

P(X= 3) = 7c3 * 0.47^3 * 0.53^4

= 0.2867

Question 2

= (591 + 67 – 31)/1127

= 627/1127

= 0.5563

Question 10

Confidence interval = mean ± z critical * std dev/ √n

Z CRITICAL at 90% interval = 1.645

Confidence interval =

551 ± 1.645 ...

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