Testing: H0:μ=54.5

H1:μ<54.5

Your sample consists of 48 subjects, with a mean of 54.1 and standard deviation of 1.8.

Calculate the test statistic, rounded to 2 decimal places.

t=

t = -1.54.

Step-by-step explanation:

The test statistic is:

In which X is the sample mean, is the value tested at the null hypothesis, is the standard deviation and n is the size of the sample.

H0:μ=54.5

This means that

Your sample consists of 48 subjects, with a mean of 54.1 and standard deviation of 1.8.

This means, respectively, that

Test statistic

The test statistic is t = -1.54.

understand that i don't know the answers

will someone answer his question

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.