Question

A random sample of 13 teenagers were surveyed for a hypothesis test about the mean weekly amount spent on convenience goods. Researchers conduct a one-mean hypothesis test, at the 1% significance level, to test whether the average spent per week on convenience goods is greater than 50 dollars.

Answer 1

Please find the complete question and the graph in the attached file.

Explanation:

On the basis of the data,

The level of importance is
`\alpha = 0.01`

Freedom levels
`= n -1 = 13 -1 = 12`

For the right-tailed test, the critical value is
`t_c = 2.681`

(Partially t-table permitted
`\alpha = 0.01 \ and\ df =12`)