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Author Question: Suppose X is a binomial random variable with n = 800 and p = 0.20. Find the approximate the ... (Read 131 times)

Mimi

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on: Jul 24, 2018
Suppose X is a binomial random variable with n = 800 and p = 0.20. Find the approximate the probability P(X  180) with the normal approximation with a continuity correction.

Question 2

A random sample of 30 students spent an average amount of 40.00 on a date, with a standard deviation of 5.00 . The standard error of the sample mean is 0.913 . Calculate an approximate 95 confidence interval for the average amount spent by all students on a date.
 a. (40.00, 90.00)
  b. (79.10, 80.90)
  c. (78.20, 81.80)
  d. None of the above


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jackie

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

0.0427

Answer to Question 2

C


Mimi

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Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

smrtceo

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Reply 3 on: Yesterday
Wow, this really help

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