A 7th grade homeroom was asked if they would prefer a hamburger, pizza, or hot dog. Caculate the relative frequency(or experimental probability) of choosing a hot dog using this chart.​ answer choices
A. 16.7%
B. 20%
C. 12%
D. 1.66%

PLEASE HURRY ANSWER THIS ILL GIVE U BRANLIEST ANSWER AND ALSO IM ON A TEST

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.