A population has a mean of 200 and a standard deviation of 50. Suppose a simple random sample of size 100 is selected and x is u

Question

2 years ago

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sed to estimate . a. What is the probability that the sample mean will be within 65 of the population mean

1 answer:

svlad2 [7] · Answer 1 · 2023-02-06T17:54:36+03:00

svlad2 [7]2 years ago

6 0

Answer:

z(195) = (195-200)/50 = -0.1

z(205) = (205-200)/50 = +0.1

P(195 < x < 205) = p(-0.1 < z < 0.1) = 0.0797

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