Answer the questions below about a test of significance at = 5% on the sample below to determine if the mean blood pressure of the group is below 150.

sample value

139

136

150

147

148

What type of test is this?

How many degrees of freedom?

What is the absolute value (positive) of the test statistic in step 4 to 2 decimal places?

Find the p-value to 4 decimal places

Should you reject the null at 5%?

Find the margin of error for a 95% confidence interval on the mean difference to two decimal places