1. Mickey wants to test if students in his class did better than average on the SAT. SAT scores have a known mean of 500 and standard deviation of 100.They are normally distributed.He has a sample of six students.

What test should she use to analyze her data? Don't assume that any information about the population exists unless it is stated. Furthermore, it may be that in some cases a t-distribution and a z-distribution are very similar. This does not mean that there are two acceptable answers. Pick the best answer. Note: You do not have to distinguish between independent samples with and without homogeneity of variance.

Group of answer choices

a one-sample z test for means

an independent samples t-test

none of these tests

a repeated (related) measures t-test

a one-sample t-test for means

a one sample z-test for proportions