Everyone got a calculator.....each weighed 16 oz.......gave them to 20 students.....20 * 16 = 320 total oz

16 oz = 1 lb

320/16 = 20 lbs <==

or, if u just think about it...u gave 16 oz to each student.....16 oz = 1 lb...so u gave 1 lb to each student....20 students = 20 lbs

4 0

4 years ago

At the mall, buying a pair of shoes and buying a book are independent events.The probability that a shopper buys shoes is 0.20.

Goryan [66]

Answer: Probability that a shopper buys shoes and a book is 0.02.

Step-by-step explanation:

Since we have given that

Event A : Buying a pair of shoes

Event B: Buying a book

Since A and B are independent events.

Probability that a shopper buys shoes i.e.

P(A) = 0.20

Probability that a shopper buys a book i.e.

P(B)=0.10

So, we need to find the probability that a shopper buys shoes and a book is given by

$P(A\ and\ B)=P(A\cap B)=P(A).P(B)\\\\P(A\cap B)=0.20\times 0.10\\\\P(A\cap B)=0.02$

Hence, Probability that a shopper buys shoes and a book is 0.02.

3 0

3 years ago