Question

Suppose the length of a chapter of a Harry Potter book, in words, is approximately normally...

Suppose the length of a chapter of a Harry Potter book, in words, is approximately normally distributed. Chapters are known to have an average length of 4580 words, with a standard deviation of 120 words. About what percent of Harry Potter chapters have between 4460 and 4700 words? About what percent of Harry Potter chapters have more than 4820 words? About what percent of Harry Potter chapters have more than 4220 words?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A.) Suppose a population is known to be normally distributed with a mean, μ, equal to...
A.) Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 116 and 144? B.) Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 116 and 130? C.) Suppose a population is known...
1. Suppose a population is known to be normally distributed with a mean, μ, equal to...
1. Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 102 and 144? 2. Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 102 and 130? 3. Suppose a population is known...
7. Suppose the lengths of pregnancies of a certain animal are approximately normally distributed with mean...
7. Suppose the lengths of pregnancies of a certain animal are approximately normally distributed with mean 108 days and standard deviation 9 days. a. What is the probability that a random sample of size 4 will have a mean length of pregnancies of more than 112 days? b. What is the probability that a random sample of size 10 will have a mean length of pregnancies of more than 112 days? c. If the length of pregnancies from part a...
Suppose that the average length of stay in a U.S. hospital is approximately normally distributed and...
Suppose that the average length of stay in a U.S. hospital is approximately normally distributed and said to be 2.4 days with a standard deviation of 0.9 days. We randomly survey 80 women who recently bore children in a U.S. hospital. Which is more likely to occur: An individual stayed more than 3 days. The average stay of 80 women was more than three days. Please explain your choice. Use terms discussed in Unit 2: Central Limit Theorem, standard deviation,...
Suppose it is known that the weights of a certain group of individuals are approximately normally...
Suppose it is known that the weights of a certain group of individuals are approximately normally distributed with a mean of 140 pounds and a standard deviation of 25 pounds. What is the probability that a person picked at random from this group will weigh between 100 and 170 pounds?
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of...
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of 207 pounds and standard deviation of 24 pounds. a. What proportion of players weigh between 200 and 250 pounds? b. What is the probability that the mean weight of a team of 25 players will be more than 215 pounds?
A student suspects that the length of all songs currently on her iPod are approximately normally...
A student suspects that the length of all songs currently on her iPod are approximately normally distributed with a mean of 257 seconds and a standard deviation of 62 seconds. Report all answers with two decimal places. a. What proportion of songs are less than 200 seconds? b. What proportion of songs are between 210 and 320 seconds? c. The shortest 10% of songs are shorter than what length?
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of...
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of 207 pounds and standard deviation of 24 pounds. What proportion of players weigh between 200 and 250 pounds? What is the probability that the mean weight of a team of 25 players will be more than 215 pounds? Could you please explain too?
A study reported that the length of pregnancy from conception to birth is approximately normally distributed...
A study reported that the length of pregnancy from conception to birth is approximately normally distributed with mean of 272 days and standard deviation of 9 days. What proportion (or %) of pregnancies last longer than 280 days?
Scores of adults aged 60 to 64 on a common IQ test are approximately Normally distributed...
Scores of adults aged 60 to 64 on a common IQ test are approximately Normally distributed with mean 90 and standard deviation 15 1. Since IQ scores of adults aged 60 to 64 are Normally distributed with mean 90 and sd 15, then about 40% of the scores are between a. 60 and 120 b. 45 and 135 c. 85 and 90 d. the 25th and 75th percentile e. the 30th and 70th percentile 2. What range of IQ scores...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT