# probability and statistics

*label*Statistics

*timer*Asked: Apr 6th, 2015

**Question description**

In the scenarios is the sample proportion approximately normally distributed? justify your answer. Then write the sampling distribution for the sample proportion of your selection

1. Knowing that 4 out of 5 dentist recommend a particular type of chewing gum, you are randomly selected sampling 30 dentists for a study on this gum,

2. you are told that 75% of students pass test 3, historically in math 120 you take a sample of 60 students that have taken test 3.

3. Use your selection to interpret results in the context of the problem