Mathematics, 06.05.2020 18:00, lilchannelll4125

Are Americans superstitious? A Harris (Feb. 2013) poll of over 2,000 adult Americans was designed to answer this question. One survey item concerned the phrase "see a penny, pick it up, all day long you’ll have good luck." The poll found that about 30 percent of Americans believe finding and picking up a penny is good luck. Consider a random sample of 20 U. S. adults and let x represent the number who believe finding and picking up a penny is good luck. This is a binomial random variable.

A) Find P(x<10)

B) Find P(x>5)

C) What is the expected number (the mean) who believe picking up a penny is good luck.

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:30, imlexi12393

Translate the following situation into an inequality statement . lily has $25 to spend on a charm bracelet for her sisters birthday gift the cost of the bracelet is $12 plus $1.50 per charm

Answers: 1

continue

Mathematics, 21.06.2019 15:30, leeenaaa95

On a architect's drawing of a house, 1 inche representa 1.5

Answers: 1

continue

Mathematics, 21.06.2019 16:00, Looneytunness1806

Drag the tiles to the table. the tiles can be used more than once. nd g(x) = 2x + 5 model a similar situation. find the values of f(x) and g(x) let's say that the functions f(x for the given values of x. fix)=5(4) * g(x) = 2x+5

Answers: 1

continue

Mathematics, 21.06.2019 18:10, mayamcmillan11

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Answers: 3

continue

Do you know the correct answer?

Are Americans superstitious? A Harris (Feb. 2013) poll of over 2,000 adult Americans was designed to...