Question

A researcher asks whether attending a private high school leads to higher or lower performance on a test of social skills when compared to students attending public schools. A sample of 100 students from a private school produces a mean score of 71.30. The population mean (m) for students from public high schools is 75.62. The population standard deviation is 28. Zobt is –1.54. Zcrit is ± 1.96.

Answer 1

any ideas>

Answer 2

i am thinking this is hypothesis of testing a difference of means

Answer 3

also i would like to work on that injection problem,