Question

1. Probability of getting a number between 67 and 80 within a distribution that has a...

1. Probability of getting a number between 67 and 80 within a distribution that has a mean of 75 and a standard deviation of 2.35?

2. Probability of getting a number 77 within a distribution that has a mean of 75 and a standard deviation of 2.35?

Please explain! thank you!

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

Homework Answers

Answer #1

1. Given

2. Given

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
Assume that x has a normal distribution, and find the indicated probability. 1) The mean is...
Assume that x has a normal distribution, and find the indicated probability. 1) The mean is 15.2 and the standard deviation is 0.9. Find the probability that x is greater than 17. 2) Let x be a continuous random variable that follows a normal distribution with a mean of 17.3 and a standard deviation of 3.2. Find the value of x so that the area under the normal curve to the left of x is .500. Please show all the...
Suppose that for a given computer salesperson, the probability distribution of x = the number of...
Suppose that for a given computer salesperson, the probability distribution of x = the number of systems sold in 1 month is given by the following table. x 1 2 3 4 5 6 7 8 p(x) 0.04 0.10 0.13 0.30 0.30 0.11 0.01 0.01 (a) Find the mean value of x (the mean number of systems sold). Answer= 4.14 (b) Find the variance and standard deviation of x. (Round your standard deviation to four decimal places.) variance = 1.8604...
Use excel to find the following please thank you! The probability distribution of X, the number...
Use excel to find the following please thank you! The probability distribution of X, the number of defective tires on a randomly selected automobile checked at a certain station is given by the table. X 0 1 2 3 4 p(X) 0.54 0.16 0.06 0.04 0.2 Table 4: Distribution for defective tires Find: a. E(X) b. E(X2) C. σX (8) A sample of 600 Scholastic Aptitude Test (SAT) results has mean of 500 and standard deviation of 100.
A population has a mean of 75 and a standard deviation of 32. Suppose a random...
A population has a mean of 75 and a standard deviation of 32. Suppose a random sample size of 80 will be taken. 1. What are the expected value and the standard deviation of the sample mean x ̅? 2. Describe the probability distribution to x ̅. Draw a graph of this probability distribution of x ̅ with its mean and standard deviation. 3. What is the probability that the sample mean is greater than 85? What is the probability...
Table 1: Cumulative distribution function of the standard Normal distribution z: 0 1 2 3 Probability...
Table 1: Cumulative distribution function of the standard Normal distribution z: 0 1 2 3 Probability to the left of z: .5000 .84134 .97725 .99865 Probability to the right of z: .5000 .15866 .02275 .00135 Probability between z and z: .6827 .9544 .99730 Table 2: Inverse of the cumulative distribution function of the standard Normal distribution Probability to the left of z: . 5000 .92 .95 .975 .9990 z: 0.00 1.405 1.645 1.960 3.09 1 Normal Distributions 1. What proportion...
A probability distribution has a mean of 70 and a standard deviation of 2. Use Chebyshev's...
A probability distribution has a mean of 70 and a standard deviation of 2. Use Chebyshev's inequality to find the minimum probability that an outcome is between 65 and 75. (Round your answer to four decimal places.)
Suppose x has a distribution with a mean of 80 and a standard deviation of 9....
Suppose x has a distribution with a mean of 80 and a standard deviation of 9. Random samples of size n = 36 are drawn. Find P(x < 77). Round your answer to four decimal places. P(x < 77) =
For a standard normal distribution, find the percentage of data that are: a. within 1 standard...
For a standard normal distribution, find the percentage of data that are: a. within 1 standard deviation of the mean ____________% b. between  - 3 and  + 3. ____________% c. between -1 standard deviation below the mean and 2 standard deviations above the mean
In a certain​ distribution, the mean is 80 with a standard deviation of 4. Use​ Chebyshev's...
In a certain​ distribution, the mean is 80 with a standard deviation of 4. Use​ Chebyshev's Theorem to tell the probability that a number lies between 60 and 100
1. If 12% of a population has green eyes what is the probability that out of...
1. If 12% of a population has green eyes what is the probability that out of a sample of 586 at least 80 will have green eyes? what would be the mean and standard deviation for the sample? 2. If SAT test scores are normally distributed with a mean of 1600 and a standard deviation of 75 a. what is the mean and standard deviation for non-standard normal distribution of this data b. what is the mean and standard deviation...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT