A teacher designs a test so a student who studies will pass 90 of ...

[jilianpiloj]

A teacher designs a test so a student who studies will pass 90 of the time, but a student who does not study will pass 5 of the time. A certain student studies for 93 of the tests taken.
 
  On a given test, what is the probability that student passes? Round to the nearest thousandth when necessary. A) 0.841 B) 0.837 C) 0.475 D) 0.035

Question 2

Two stores sell a certain product. Store A has 39 of the sales, 5 of which are of defective items, and store B has 61 of the sales, 3 of which are of defective items.
 
  The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives one of this product as a gift. What is the probability it is defective? Round to the nearest thousandth when necessary. A) 0.038 B) 0.04 C) 0.019 D) 0.44

[dominiqueenicolee]

Answer to Question 1

A

Answer to Question 2

A