If X-77, σ:8, and n-65, construct a 99% confidence interval estimate of the population mean, μ...

Question

Question

Answer 1

Answer #1

Given that, sample size ( n ) = 65

sample mean $(ar x)$ = 77

population standard deviation $(sigma)$ = 8

confidence level = 99% That is c = 0.99

Using TI-84 calculator we get, 99% confidence interval estimate of the poulation mean $(mu)$ is (74.44, 79.56)

$74.44 < μ < 79.56$

TI-84 Plus TEXAS INSTRUMENTS Ints (74.444, 79.556) STAT PLOTF1 TBLSETF2 INDOw FORMAT F3CALC F4 TABLE F5 QUIT MODE LINK X,T,e,

Answer 2

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