Answer to Question #344748 in Statistics and Probability for Franz

Question

The owner of the drug store chain has 100 drugstore that that sell flexcoslow, a surgical mask that prevents a person from catching liquid droplets of viruses. His operation manager said that the average drugstore in his chain sell 12 boxes of the flexcoslow a day with a standard deviation of 2 boxes. To find out if this is true, the owner randomly selected 10 store and found that the mean is 15 boxes with a standard deviation of 1box.

N= ,n=

$\mu$ =

$\sigma$ ^{2 =}

X=

s=

Answer 1

N=100 dragstores

n=10 dragstores

$\mu=12$ boxes

$\sigma^2=2^2=4$ boxes

$\=X=15$ boxes

S=1 box