Suppose the heights of the members of a population follow a normal distribution. If the mean height of the population is 68 inches and the
standard deviation is 4 inches, 68% of the population will have a height within
which of the following ranges?
A. 56 inches to 80 inches
B. 52 inches to 84 inches
C. 60 inches to 76 inches
D. 64 inches to 72 inches

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music.they were asked how they like three types of music: rock, country western and jazz.the results are summarized below: no one dislikes all three types of music.six like all three types of music.eleven don’t like country western.sixteen like jazz.three like country western and jazz, but not rock.six don’t like rock.eight like rock and country western.seven don’t like jazz.how many students were surveyed?