Question

Testing:

H0:μ=15.08H0:μ=15.08
H1:μ>15.08H1:μ>15.08

Your sample consists of 25 subjects, with a mean of 15.2 and standard deviation of 2.24.

Calculate the test statistic, rounded to 2 decimal places.

t=

Answer 1

We are given a sample of 25 subjects, thus:

Sample size, n = 25

The sample has a mean of 15.2, thus:

Sample mean, = 15.2

Moreover, the sample has a standard deviation of 2.24, thus:
Sample standard deviation, s = 2.24

Moreover, under the null hypothesis the value of the population mean μ is 15.08, thus:

Value of the population mean μ under H₀, = 15.08

Now, the value of the test statistic is given by:

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