Question

You are conducting a two-tailed hypothesis test to see if your sample mean

(x̄)

differs significantly from your

population mean (μ = 50). Your alpha level is 0.05

(α

= 0.05).

Sample data:

53, 56, 59, 64, 55, 42, 36, 58, 39, 53, 62, 60, 64, 53, 42, 53, 65, 60, 61, 63

You will need to:

h) State your alternative hypothesis and null hypothesis

i) Calculate the sample mean

(x̄)

j) Calculate the sample standard deviation (s)

k) Calculate the sample size and degrees of freedom (df)

l) Calculate the t-statistic or t-observed using the formula on page 322

m) Find the appropriate t-critical value using

α

and df

n) State your final conclusion (i.e. reject the null or fail to reject the null hypothesis)

Answer 1