WILL MEDAL AND FAN
Betty’s Bite-Size Candies are packaged in bags. The number of candies per bag is normally distributed,
with a mean of 50 candies and a standard deviation of 3. At a quality control checkpoint, a sample of
bags is checked, and 8 bags contain fewer than 47 candies. How many bags were probably taken as
samples?

Question

WILL MEDAL AND FAN
Betty’s Bite-Size Candies are packaged in bags. The number of candies per bag is normally distributed,
with a mean of 50 candies and a standard deviation of 3. At a quality control checkpoint, a sample of
bags is checked, and 8 bags contain fewer than 47 candies. How many bags were probably taken as
samples?

camzzzie · Answer

16
24
50
10

camzzzie · Answer

are the options

camzzzie · Answer

can anyone tell me how to set it up?

michele_laino · Answer

the probability to get a bag which contains fewer than 47 candies, is:
50-34.13 = 15.87%
so we have about 16 bags every a 100 bags sample