Questions from Statistics

Q: You randomly select 100 drivers ages 16 to 19 from Example 4

You randomly select 100 drivers ages 16 to 19 from Example 4. What is the probability that the mean distance traveled each day is between 19.4 and 22.5 miles? Use µ = 20.7 miles and σ = 6.5 miles.

Q: The average sales price of a single-family house in the

The average sales price of a single-family house in the United States is $235,500. You randomly select 12 single-family houses. What is the probability that the mean sales price is more than $225,000?...

Q: A consumer price analyst claims that prices for liquid crystal display (

A consumer price analyst claims that prices for liquid crystal display (LCD) computer monitors are normally distributed, with a mean of $190 and a standard deviation of $48. What is the probability th...

Q: Which event(s) in Exercise 6 can be considered unusual

Which event(s) in Exercise 6 can be considered unusual? Explain your reasoning. From Exercise 6: Basketball player Dwight Howard makes a free throw shot about 56% of the time. Find the probability th...

Q: Determine whether you can use a normal distribution to approximate the binomial

Determine whether you can use a normal distribution to approximate the binomial distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs...

Q: A binomial experiment is listed. Determine whether you can use a

A binomial experiment is listed. Determine whether you can use a normal distribution to approximate the distribution of x, the number of people who reply yes. If you can, find the mean and standard de...

Q: Use a continuity correction to convert each binomial probability to a normal

Use a continuity correction to convert each binomial probability to a normal distribution probability. 1. The probability of getting between 57 and 83 successes, inclusive 2. The probability of gett...

Q: In a survey of adults in the United States, 29%

In a survey of adults in the United States, 29% said they have seen a person using a mobile device walk in front of a moving vehicle without looking. You randomly select 100 adults in the United State...

Q: In Example 4, what is the probability that at most 80

In Example 4, what is the probability that at most 80 drivers will say yes, they have yelled at another driver?

Q: The study in Example 5 found that 32.0% of

The study in Example 5 found that 32.0% of all men in the United States ages 50 and older have arthritis. You randomly select 75 men in the United States who are at least 50 years old and ask them whe...