Question

Kindergarten children have heights that are approximately normally distributed about a mean of 39 inches and...

Kindergarten children have heights that are approximately normally distributed about a mean of 39 inches and a standard deviation of 2 inches. If a random sample of 34 is taken, what is the probability that the sample of kindergarten children has a mean height of less than 39.50 inches? (Round your answer to four decimal places.)

*PLEASE DOUBLE CHECK YOUR WORK, I HAVE BEEN GETTING ALOT OF WRONG ANSWERS LATELY*

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

Homework Answers

Answer #1

Suppose, random variable denotes height (in inches) of i-th child.

We define,

Required probability is given by

[Using R-code '1-pnorm(1.457738)']

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
Kindergarten children have heights that are approximately normally distributed about a mean of 39 inches and...
Kindergarten children have heights that are approximately normally distributed about a mean of 39 inches and a standard deviation of 2 inches. If a random sample of 19 is taken, what is the probability that the sample of kindergarten children has a mean height of less than 39.50 inches? (Round your answer to four decimal places.)
The heights of kindergarten children are approximately normally distributed with a mean height of 39 inches...
The heights of kindergarten children are approximately normally distributed with a mean height of 39 inches and a standard deviation of 2 inches. If a first-time kindergarten teacher finds the average height for the 20 students in her class is 40.3 inches, would that be unusual? Explain. ANSWER 0.0018 please show step by step ! thank you
The heights of kindergarten children are approximately normally distributed with the following. (Give your answers correct...
The heights of kindergarten children are approximately normally distributed with the following. (Give your answers correct to four decimal places.) μ = 50 and σ = 2.2 inches (a) If an individual kindergarten child is selected at random, what is the probability that he or she has a height between 47.5 and 52.5 inches? (b) A classroom of 16 of these children is used as a sample. What is the probability that the class mean x is between 47.5 and...
Heights of adult males are approximately normally distributed with a mean of 66.6 inches and a...
Heights of adult males are approximately normally distributed with a mean of 66.6 inches and a standard deviation of 1.9 inches. If a sample of 50 adult males are​ chosen, what is the probability their mean height will be between 67 inches and 67.4 ​inches? Report your answer to four decimal places.
The heights of kindergarten children are distributed with a mean, , of 39 and a standard...
The heights of kindergarten children are distributed with a mean, , of 39 and a standard deviation, , of 2. Use a sample size, , of 30. Find  mu subscript top enclose x end subscript 4 points    QUESTION 19 Find sigma subscript top enclose x end subscript 4 points    QUESTION 20 Find: P(38<= x <= 40)
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 69 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 69 inches and standard deviation 6 inches. (b) If a random sample of twenty-seven 18-year-old men is selected, what is the probability that the mean height x is between 68 and 70 inches? (Round your answer to four decimal places.)
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches and standard deviation 2 inches. (a) What is the probability that an 18-year-old man selected at random is between 65 and 67 inches tall? (Round your answer to four decimal places.) (b) If a random sample of fourteen 18-year-old men is selected, what is the probability that the mean height x is between 65 and 67 inches? (Round your answer to four decimal places.)
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 65 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 65 inches and standard deviation 4 inches. (a) What is the probability that an 18-year-old man selected at random is between 64 and 66 inches tall? (Round your answer to four decimal places.) (b) If a random sample of eleven 18-year-old men is selected, what is the probability that the mean height x is between 64 and 66 inches? (Round your answer to four decimal places.)
In a large city, the heights of 10-year-old children are approximately normally distributed with a mean...
In a large city, the heights of 10-year-old children are approximately normally distributed with a mean of 53.7 inches and standard deviation of 3.7 inches. (a) What is the probability that a randomly chosen 10-year-old child has a height that is less than than 50.35 inches? Round your answer to 3 decimal places. (b) What is the probability that a randomly chosen 10-year-old child has a height that is more than 53.2 inches? Round your answer to 3 decimal places.
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 71 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 71 inches and standard deviation 4 inches. If a random sample of twenty-eight 18-year-old men is selected, what is the probability that the mean height x is between 70 and 72 inches?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT