The mean of a normally distributed data set is 45, and its standard deviation is 7. for this data, the probability of which range of numbers is represented by the area of the shaded region in the given curve?
a. 31 to 45
b. 38 to 52
c. 45 to 59
d. 24 to 38

Which number line represents the solution set for the inequality -1/2x> 24?

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?

According to a study done by de anza students, the height for asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. suppose one asian adult male is randomly chosen. let x = height of the individual. a) give the distribution of x. x ~ b) find the probability that the person is between 64 and 69 inches. write the probability statement. what is the probability?