Posted by **Steph** on Saturday, October 22, 2011 at 7:43pm.

28. A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spend studying per week. Based on a simple random sample, they surveyed 144 students. The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours. What is the probability that a sample mean would exceed 20 hours per week?

A) 1.96

B) 0.5

C) Cannot be calculated based on the given information.

D) 1.0

## Answer This Question

## Related Questions

- Statistics - A group of statistics students decided to conduct a survey at their...
- Statistics - A group of statistics students decided to conduct a survey at their...
- statistics - A group of statistics students decided to conduct a survey at their...
- statistics - 2. A teacher wants to investigate whether there is a difference ...
- statistics - 2. A teacher wants to investigate whether there is a difference ...
- Statistics - A survey among freshmen at a certain university revealed that the ...
- Statistics - A student group claims that first-year students at a university ...
- statistics - The Office of Student Services at a large western state university ...
- Statistics - A survey among freshman at a certain university revealed that the ...
- statistics - 1. The on-campus housing costs for a semester at a state university...

More Related Questions