statistics
posted by Matt .
0.57 of all college students like the idea of a new curriculum.
If we select 88 students (ASSUME INDEPENDENCE), what is the Standard Deviation of (the Probability Distribution that would list the number of students (from 0 to 88) and the probability of each.) THE STANDARD DEVIATION IS WHAT IS BEING ASKED
If the answer cannot be calculated, enter zero (0) as your answer.
Round to 4 decimal places otherwise. YES, you need, therefore, to look at the 5th decimal place.

The manager of a local gym has determined that the length of time members spend at the gym is a normally distributed variable with a mean of 80 minutes and a standard deviation of 20 minutes.
What proportion of members spend less than 55 minutes at the gym?