You suspect that elementary students who have been attending school in-person during the pandemic will have higher test scores on average than students who attended school online. You take samples of 20 students from each group; you find a mean of 73.7 for the sample of in-person students, and 68.9 for the online students. Assume that you know the population standard deviation for each group (12 for both populations).

Use 'in-person' as population 1 and 'online' as population 2

What is the value of the test statisticto 3 decimals

What are the degrees of freedom?

What is the p-value

What is the correct conclusion?

reject the null,

do not reject the null,

accept the null