In testing an hypothesis H 0 : µ = 10 against H A : µ <10, a one-sample t-test...
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In testing an hypothesis H0:µ = 10 against HA:µ <10, a one-sample t-test for the mean is to be used.
A simple random sample of 15 observations gives a mean of 9.9 and standard deviation of 0.25.
Calculate the standardized score (test statistic) for this sample, correct to two (2) decimal places.
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