To test the hypothesis H0 : µ = 5 vs. Ha : µ 6= 5, a...

To test the hypothesis H0 : µ = 5 vs. Ha : µ 6= 5, a random sample of 18 elements is selected which yielded a sample mean of x¯ = 4.6 and a sample standard deviation of s = 1.2. The value of the test statistic is about:

(a) −2.121 (b) −1.923 (c) −1.414 (d) 0.345 (e) 1.455

Expert Solution

n = 18

sample mean = 4.6

sample sd = 1.2

Assuming that the data is normally distributed, also as the population sd is not given, we will calculate t stat

t = -0.4. / 0.2828

t = -1.414

ANS : (c) −1.414

orchestra answered 2 years ago

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