Question

Do 2.2 19 of 32 (18 complete) HW Score: 56.25%, 18 of 32 Score: 1 of 1 pt 2.2-30 Question Help The following frequency distribution displays the daily sales of muffins at a local bakery Number Sold Frequency 1-7 8-14 15-21 22-28 27-35 What is the probability that 21 or fewer muffins will be sold tomorrow? A. 0.52 OB. 0.80 C. 0.66 D. 0.92 Question is complete All parts showing

Answer 1

Intervals Frequency(f) probability Cumalative Probability 1-7 0.1 0.1 8-14 0.16 0.26 15-21 13 0.26 0.52 22-28 21 0.42 0.94 27-35 0.06

probability that 21 or fewer muffins will be sold = P(1-7) + P(8-14) + P(15-21)
P(1-7) = no.of frequeny of 1-7/total = 5/50 = 0.10
P(8-14) = no.of frequeny of 8-14/total = 8/50 = 0.26
P(15-21) = no.of frequeny of 15-21/total = 13/50 = 0.52
probability that 21 or fewer muffins will be sold = 0.1 + 0.16 + 0.26 = 0.52