Question 1

Use the following 
According to a 2006 study described in the New York Times (October 18, 2006), blue eyes are becoming rarer among Americans with only about 17% of Americans having blue eyes. Consider taking a random sample of 50 Americans. Let X represent the number of individuals with blue eyes in the sample.
Round all values to three decimal places unless otherwise specified.
-What is the probability that 5 or fewer people have blue eyes?

Accepted Answer

The answer of Use the following 
According to a 2006...

Question 2

Use the following 
According to a 2006 study described in the New York Times (October 18, 2006), blue eyes are becoming rarer among Americans with only about 17% of Americans having blue eyes. Consider taking a random sample of 50 Americans. Let X represent the number of individuals with blue eyes in the sample.
Round all values to three decimal places unless otherwise specified.
-Find the mean of the random variable X. Use one decimal place.

Accepted Answer

The answer of Use the following 
According to a 2006...

Question 3

Use the following 
Calculate the requested quantity.
-3!

Accepted Answer

The answer of Use the following 
Calculate the requested quantity.
-3!...

Question 4

Use the following 
Calculate the requested quantity.
-5!

Accepted Answer

The answer of Use the following 
Calculate the requested quantity.
-5!...

Question 5

Use the following 
Calculate the requested quantity.
-

Accepted Answer

The answer of Use the following 
Calculate the requested quantity.
-...

Question 6

Use the following 
Calculate the requested quantity.
-

Accepted Answer

The answer of Use the following 
Calculate the requested quantity.
-...

Question 7

Use the following 
When a certain pitcher throws his fastball, 75% of the time it is a strike. Suppose he throws 20 fastballs and that the pitches are independent of one another. Let X represent the number of strikes in 20 pitches.
Round all answers to three decimal places.
-Explain why X is a binomial random variable.

Accepted Answer

The answer of Use the following 
When a certain pitcher...

Question 8

Use the following 
When a certain pitcher throws his fastball, 75% of the time it is a strike. Suppose he throws 20 fastballs and that the pitches are independent of one another. Let X represent the number of strikes in 20 pitches.
Round all answers to three decimal places.
-What is the probability that all 20 pitches are strikes?

Accepted Answer

The answer of Use the following 
When a certain pitcher...

Question 9

Use the following 
When a certain pitcher throws his fastball, 75% of the time it is a strike. Suppose he throws 20 fastballs and that the pitches are independent of one another. Let X represent the number of strikes in 20 pitches.
Round all answers to three decimal places.
-What is the probability that more than 15 pitches are strikes?

Accepted Answer

The answer of Use the following 
When a certain pitcher...

Question 10

Use the following 
When a certain pitcher throws his fastball, 75% of the time it is a strike. Suppose he throws 20 fastballs and that the pitches are independent of one another. Let X represent the number of strikes in 20 pitches.
Round all answers to three decimal places.
-Find the mean of the random variable X.

Accepted Answer

The answer of Use the following 
When a certain pitcher...

Question 11

Use the following 
When a certain pitcher throws his fastball, 75% of the time it is a strike. Suppose he throws 20 fastballs and that the pitches are independent of one another. Let X represent the number of strikes in 20 pitches.
Round all answers to three decimal places.
-Find the standard deviation of the random variable X.

Accepted Answer

The answer of Use the following 
When a certain pitcher...

Question 12

Use the following 
Determine whether the process describes a binomial random variable. If it is binomial, give values for n and p. If it is not binomial, state why not.
-It is believed that 10% of people are left handed. Randomly sample 100 adults, and count the number that are left handed.

Accepted Answer