Question

Suppose students ageas follow a skewed right distribution with a mean of 25 years old and...

Suppose students ageas follow a skewed right distribution with a mean of 25 years old and a standard deviation of 15 years. consider the random sample of 100 students.

Determine the probability that the sample mean student age is greater than 22 years?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(-2, TRUE)" to find the probability.

The probability that the sample mean student age is greater than 22 years is

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
Suppose students' ages follow a skewed right distribution with a mean of 24 years old and...
Suppose students' ages follow a skewed right distribution with a mean of 24 years old and a standard deviation of 5 years. If we randomly sample 250 students, which of the following statements about the sampling distribution of the sample mean age is incorrect? The shape of the sampling distribution is approximately normal. The mean of the sampling distribution is approximately 24 years old. The standard deviation of the sampling distribution is equal to 5 years. All of the above...
The distribution of college students’ commute time is skewed to the right with the mean 20...
The distribution of college students’ commute time is skewed to the right with the mean 20 minutes and the standard deviation 30 minutes. 1. Let X¯ be the sample mean commute time of a random sample of 9 students. What are (i) the mean and (ii) variance of X¯? (iii) Is the distribution of X¯ normal? (iv) Why or why not? 2. Let X¯ 100 be the sample mean commute time of a random sample of 100 students. What is...
Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean...
Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean 24 months and standard deviation 2 months. Let X̄ represent the sampling distribution of the sample mean corresponding to a sample of size 1500 from this distribution. We expect this sampling distribution to be... Select one: a. Approximately Normal with a mean of 24 months and a standard deviation of 0.0013 months. b. Right-skewed with a mean of approx. 24 months and a standard...
The ages of all college students follow a normal distribution with a mean of 27 years...
The ages of all college students follow a normal distribution with a mean of 27 years and standard deviation of 4.4 years. Find the probability that the mean age for a random sample of 36 students would be: Between 25.5 and 28 years old Less than 25.5 years old Instructions: Draw the normal curve and shade the area where applicable Do not give calculator key strokes. (Give the formula used) Circle your answer to the question.
Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean...
Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean 24 months and standard deviation 2 months. Suppose we take a sample of size 1500 from this distribution, and create a histogram. We expect this histogram to be... Select one: a. Normal with a mean of approx. 24 months and a standard deviation of approx. 2 months. b. Right-skewed with a mean of approx. 24 months and a standard deviation of approx. 2 months....
Suppose the selling price of homes in the United States is skewed right with a mean...
Suppose the selling price of homes in the United States is skewed right with a mean of $350,000 and a standard deviation of $160,000. (4 pts) If we record the selling price of 40 randomly selected U.S. homes, what will be the shape of the distribution of sample means? What will be the mean of this distribution? What will be the standard deviation of this distribution? Indicate how you arrived at your conclusions. (6 pts) What is the probability that...
Home prices in a certain community have a distribution that is skewed right. The mean of...
Home prices in a certain community have a distribution that is skewed right. The mean of the home prices is $498,000 with a standard deviation of $25,200. a. Suppose we take a random sample of 30 homes in this community. What is the probability that the mean of this sample is between $500,000 and $510,000? b. Suppose we take a random sample of 10 homes in this community. Can we find the approximate probability that the mean of the sample...
The times that college students spend studying per week have a distribution skewed to the right...
The times that college students spend studying per week have a distribution skewed to the right with a mean of 8.7 hours and a standard deviation of 2.2 hours. Find the probability that the mean time spent studying per week for a random sample of 45 college students would be a. between 8.3 and 8.9 hours.
The population distribution of college Student debt, as of May, 2019, is heavily skewed to the...
The population distribution of college Student debt, as of May, 2019, is heavily skewed to the right with a mean debt of $30,000 and a standard deviation of $7510. Explain why it is not possible to determine the probability that a randomly selected college student in your area, has a debt that’s less than $28,000 Determine the probability that a random sample of 30 college students will have a mean debt of less than $28,000. Be sure to use the...
The lifespan of laptop computers is skewed right with a mean of 5.5 years and a...
The lifespan of laptop computers is skewed right with a mean of 5.5 years and a standard deviation of 3.5 years. If simple random samples of 49 laptop computers are randomly selected, then what do we know about the distribution of the sample means? Choose one of the answers below: A. the distribution is normal B. the distribution is approximately normal C. the distribution is exponential
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT