Question

The average production cost for major movies is 59 million dollars and the standard deviation is...

The average production cost for major movies is 59 million dollars and the standard deviation is 21 million dollars. Assume the production cost distribution is normal. Suppose that 13 randomly selected major movies are researched. Answer the following questions. Round all answers to 4 decimal places where possible. What is the distribution of X ? X ~ N( , ) What is the distribution of ¯ x ? ¯ x ~ N( , ) For a single randomly selected movie, find the probability that this movie's production cost is between 61 and 64 million dollars. For the group of 13 movies, find the probability that the average production cost is between 61 and 64 million dollars. For part d), is the assumption of normal necessary? Yes or No

Homework Answers

Answer #1

Since the sample size is less than 30. Therefore the normal assumption is necessary.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The average production cost for major movies is 59 million dollars and the standard deviation is...
The average production cost for major movies is 59 million dollars and the standard deviation is 20 million dollars. Assume the production cost distribution is normal. Suppose that 14 randomly selected major movies are researched. Answer the following questions. Round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For a single randomly selected movie, find the probability that this movie's production cost...
The average production cost for major movies is 59 million dollars and the standard deviation is...
The average production cost for major movies is 59 million dollars and the standard deviation is 22 million dollars. Assume the production cost distribution is normal. Suppose that 14 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For a single randomly selected...
The average production cost for major movies is 66 million dollars and the standard deviation is...
The average production cost for major movies is 66 million dollars and the standard deviation is 19 million dollars. Assume the production cost distribution is normal. Suppose that 17 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible. What is the distribution of X X ? X X ~ N(,) What is the distribution of ¯ x x¯ ? ¯ x...
The average production cost for major movies is 69 million dollars and the standard deviation is...
The average production cost for major movies is 69 million dollars and the standard deviation is 19 million dollars. Assume the production cost distribution is normal. Suppose that 8 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible. What is the distribution of X ? X ~ N( , ) What is the distribution of ¯ x ? ¯ x ~...
The average production cost for major movies is 58 million dollars and the standard deviation is...
The average production cost for major movies is 58 million dollars and the standard deviation is 18 million dollars. Assume the production cost distribution is normal. Suppose that 10 randomly selected major movies are researched. Answer the following questions. Give your answers in millions of dollars, not dollars. Round all answers to 4 decimal places where possible. What is the distribution of X ? X ~ N( 58 Correct, 18 Correct) What is the distribution of ¯ x ? ¯...
1. Suppose the age that children learn to walk is normally distributed with mean 11 months...
1. Suppose the age that children learn to walk is normally distributed with mean 11 months and standard deviation 1.1 month. 18 randomly selected people were asked what age they learned to walk. Round all answers to 4 decimal places where possible. What is the distribution of X? X ~ N( , ) What is the distribution of ¯x? ¯x~ N( , ) Find the IQR for the average first time walking age for groups of 18 people. Q1 =  _____...
20. During a recent year, the average cost of making a movie was 54.8 million dollars....
20. During a recent year, the average cost of making a movie was 54.8 million dollars. This year, a random sample of 15 recent action movies had an average production cost of 62.3 million dollars with a variance of 90.25 million dollars. At the 0.05 level of significance (alpha), can it be concluded that it costs more than average to produce an action movie? NOTE: be sure to take the square root of a given Variance in the word problems...
The average time to run the 5K fun run is 22 minutes and the standard deviation...
The average time to run the 5K fun run is 22 minutes and the standard deviation is 2.2 minutes. 44 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) What is the distribution of ∑x∑x? ∑x∑x ~ N(,) If one randomly selected runner is timed, find the...
The average time to run the 5K fun run is 23 minutes and the standard deviation...
The average time to run the 5K fun run is 23 minutes and the standard deviation is 2.4 minutes. 17 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) What is the distribution of ∑x∑x? ∑x∑x ~ N(,) If one randomly selected runner is timed, find the...
The average time to run the 5K fun run is 20 minutes and the standard deviation...
The average time to run the 5K fun run is 20 minutes and the standard deviation is 2.3 minutes. 7 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. What is the distribution of X X ? X X ~ N(,) What is the distribution of ¯ x x¯ ? ¯ x x¯ ~ N(,) What is the distribution of ∑ x ∑x ? ∑...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT