Mars Inc. claims that they produce M&Ms with the following distributions:

Brown30%Red20%Yellow20%Orange10%Green10%Blue10%

A bag of M&Ms was randomly selected from the grocery store shelf, and the color counts were:

Brown23Red21Yellow20Orange16Green15Blue14

Find the 95% confidence interval for the proportion of blue M&Ms in that bag.

a) [0.066, 0.191]

b) [0.116, 0.121]

c) [-0.014, 0.191]

d) [0.066, -0.009]

e) [-0.034, 0.141]

f) None of the above

Question 7

Mars Inc. claims that they produce M&Ms with the following distributions:

Brown30%Red20%Yellow20%Orange10%Green10%Blue10%

How many M&Ms must be sampled to construct the 98% confidence interval for the proportion of brown M&Ms in that bag if we want a margin of error of .15?

a) 51

b) 40

c) 53

d) 39

e) 50

f) None of the above