Assume that the time it takes to complete a quiz in professor mosby's class is 25 minutes. assume that the time it takes to complete the quiz follows a normal distribution with mean of 25 minutes and standard deviation of 3 minutes. find the proportion of students who take between 20 and 30 minutes. note: response should be in decimal format. such as 55.8% should be written as 0.558.

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

Which statement justifies why angle ebc measures 90?