In a sample of 97 people who have had strokes, the average cholesterol level was 255 with a standard deviation of 56.9. In order to test the hypothesis (at the 10% level of significance) that the average cholesterol level of people who have had strokes was at least 240, what is the critical value? (please round your answer to 2 decimal places)

The combined SAT scores for the students at a local high school are normally distributed with a mean of 863 and a standard deviation of 156. The local college requires a minimum SAT score of 877 before students are considered for admision.What percentage of students from this school have SAT scores that do not satisfy the local college's admission requirement? Enter your answer as a percent accurate to 2 decimal places.

The annual per capita consumption of oranges (in pounds) in the United States  can be approximated by a normal distribution. The mean annual per capita  of oranges is 19.2 with a standard deviation of 4 pounds.  what annual per capita consumption of oranges represents the 5th percentile?

On an exam, Tom scored 8 points above the mean and had a z-score of +2.00. The standard deviation for the set of exam scores must be o = 4. O True O False