Suppose you have the following null and alternative hypotheses: H 0 : =8.3 H 1 :

Question

Suppose you have the following null and alternative hypotheses:

            H0: =8.3                   H1: 8.3

You take a sample of 30 observations, and find a sample mean of 7.3 with a standard deviation of 2.5. What is the value of the test statistic?

Suppose you have the following null and alternative hypotheses: H_0: mu = 8.3 H_1: mu notequalto 8.3 You take a sample of 30 observations, and find a sample mean of 7.3 with a standard deviation of 2.5. What is the value of the test statistic? t = -1.956 t = -1.565 t = -2.191 z = 1.96 z = -1.64

Explanation / Answer

t test is used for sample size(n) 30.

µ = 7.3; = 2.5; n = 30

t = (8.3 - 7.3) / (2.5/30)

= 2.19

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