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Author Question: If P(A) = .75, P(A B) = .86, and P(A B) = .56, then P(B) = a. .25 b. .67 c. .56 d. ... (Read 26 times)

Jipu 123

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on: Jun 24, 2018
If P(A) = .75, P(A  B) = .86, and P(A  B) = .56, then P(B) =
 a. .25
  b. .67
  c. .56
  d. .11

Question 2

A local electronics firm wants to determine their average daily sales (in dollars.) A sample of the sales for 36 days revealed an average sales of 139,000 . Assume that the standard deviation of the population is known to be 12,000.
 a. Provide a 95 confidence interval estimate for the true average daily sales.
  b. Provide a 97 confidence interval estimate for the true average daily sales.


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Ptupou85

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Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

a. 135,080 to 142,920
b. 134,660 to 143,340


Jipu 123

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Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

ashely1112

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Reply 3 on: Yesterday
Excellent

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