Suppose X is a random variable with s = 40. A sample of size 16 gave...

Question

Question

Suppose X is a random variable with s = 40. A sample of size 16 gave a sample mean of 162.

What is the 99% confidence interval for the true mean of X?

(a) ( 120.85 , 203.15 ) (b) ( 124.58 , 199.42 )

(c) ( 128.75 , 195.25 ) (d) ( 132.53 , 191.47 )

(e) ( 136.25 , 187.75 )

math Statistics-And-Probability

Answer 1

Answer #1

Ana :-

(e) (136.25 , 187.75)

S ra where, Zala normal distribution h we know 100(1-2) 3. confidence interval of meaniny is car zaiz 2. be the critical valu

Answer 2

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