# Question: A fair coin is flipped 50 times a What is the

A fair coin is flipped 50 times.

a. What is the expected number of heads?

b. Find the standard deviation for the number of heads.

c. How many heads should you expect, give or take how many? Give the range of the number of heads based on these numbers.

a. What is the expected number of heads?

b. Find the standard deviation for the number of heads.

c. How many heads should you expect, give or take how many? Give the range of the number of heads based on these numbers.

## Answer to relevant Questions

According to GMAC Insurance, 20% of drivers aged 60–65 fail the written drivers’ test. This is the lowest failure rate of any age group. If 200 people aged 60–65 independently take the exam, how many would you expect ...A study of U.S. births published on the website Medscape from WebMD reported that the average birth length of babies was 20.5 inches and the standard deviation was about 0.90 inch. Assume the distribution is approximately ...Babies in the United States have a mean birth length of 20.5 inches with a standard deviation of 0.90 inch. The shape of the distribution of birth lengths is approximately Normal. a. How long is a baby born at the 20th ...a. If a rifleman’s gunsight is adjusted correctly but he has shaky arms, the bullets might be scattered widely around the bull’s-eye target. Draw a sketch of the target with the bullet holes. Does this show variation ...Return to Exercise 7.25 and find the approximate probability that the random sample of 100 will contain 24% or more orange candies.Post your question