Question

An unknown distribution has a mean of 90 and a standard deviation of 15. A sample...

An unknown distribution has a mean of 90 and a standard deviation of 15. A sample of size 80 is drawn randomly from the population. Find the probability that the sum of the 80 values ( or the total of the 80 values) is more than 7,300.

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

Homework Answers

Answer #1

Answer:-

Given that:-

An unknown distribution has a mean of 90 and a standard deviation of 15. A sample of size 80 is drawn randomly from the population.

Find the probability that the sum of the 80 values ( or the total of the 80 values) is more than 7,300.

Mean   Standard deviation   

a) n= 80

From Z- table

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
An unknown distribution has a mean of 90 and a standard deviation of 15. Samples of...
An unknown distribution has a mean of 90 and a standard deviation of 15. Samples of size n=25 are drawn randomly form the population. Find the probability that the sample mean is between 85 and 92 is the area under which curve?
Suppose lengths of text messages have an unknown distribution with mean 30 and standard deviation 4...
Suppose lengths of text messages have an unknown distribution with mean 30 and standard deviation 4 characters. A sample of size n=61 is randomly taken from the population and the sum of the values is taken. Using the Central Limit Theorem for Sums, what is the standard deviation for the sample sum distribution?
The lengths, in inches, of adult corn snakes have an unknown distribution with mean 56 and...
The lengths, in inches, of adult corn snakes have an unknown distribution with mean 56 and standard deviation 10 inches. A sample, with size n=46, is randomly drawn from the population and the sum is taken. What is the probability that the sum is less than 2516 in
A population, with an unknown distribution, has a mean of 80 and a standard deviation of...
A population, with an unknown distribution, has a mean of 80 and a standard deviation of 7. For a sample of 49, the probability that the sample mean will be larger than 82 is Group of answer choices About .516 About 0.0228 About 0.9772 About 0.484
Suppose x has a distribution with a mean of 90 and a standard deviation of 20....
Suppose x has a distribution with a mean of 90 and a standard deviation of 20. Random samples of size n = 64 are drawn. (a) Describe the distribution. has an approximately normal distribution. has a normal distribution. has a geometric distribution. has a binomial distribution. has an unknown distribution. has a Poisson distribution. Compute the mean and standard deviation of the distribution. (For each answer, enter a number.) = mu sub x bar = = sigma sub x bar...
1. To estimate the mean of a population with unknown distribution shape and unknown standard deviation,...
1. To estimate the mean of a population with unknown distribution shape and unknown standard deviation, we take a random sample of size 64. The sample mean is 22.3 and the sample standard deviation is 8.8. If we wish to compute a 92% confidence interval for the population mean, what will be the t multiplier? (Hint: Use either a Probability Distribution Graph or the Calculator from Minitab.)
Suppose x has a distribution with a mean of 90 and a standard deviation of 27....
Suppose x has a distribution with a mean of 90 and a standard deviation of 27. Random samples of size n = 36 are drawn. (a) Describe the x distribution and compute the mean and standard deviation of the distribution. x has distribution with mean μx = and standard deviation σx = . (b) Find the z value corresponding to x = 99. z = (c) Find P(x < 99). (Round your answer to four decimal places.) P(x < 99)...
a normally distributed population has mean 57.7 and standard deviation 12.1 .(a) find the probability that...
a normally distributed population has mean 57.7 and standard deviation 12.1 .(a) find the probability that single randomly selected element X OF THE POPULATION IS LESS THAN 45 (b) find the mean and standard deviation of x for samples size 16. (c) find the probability that the mean of a sample of size 16 drawn from this population is less than 45
A sample of size 15will be drawn from a population with mean 135 and standard deviation...
A sample of size 15will be drawn from a population with mean 135 and standard deviation 36 . (a) Is it appropriate to use the normal distribution to find probabilities for x? (b) If appropriate find the probability that X will be less than 118 . (c) If appropriate find the 90th  percentile of x A sample of size 15will be drawn from a population with mean 135 and standard deviation 36 . (a) Is it appropriate to use the normal...
The distribution of results from a cholesterol test has a mean of 180 and a standard...
The distribution of results from a cholesterol test has a mean of 180 and a standard deviation of 20. A sample size of 40 is drawn randomly. Find the sum that is one standard deviation below the mean of the sums. (Round your answer to two decimal places.)
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT