Question

Show all work and answer A and B. The average teacher's salary in North Dakota is...

Show all work and answer A and B. The average teacher's salary in North Dakota is $37,764. Assume a normal distribution with a= $5100.
A. What is the probability that a randomly selected teacher's salary is greater than $40,000?
B. For a sample of 75 teachers, what is the probability that the sample mean is greater than $40,000?
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
The average teacher’s salary is $45,000. Assume a normal distribution with standard deviation equal to $10,000....
The average teacher’s salary is $45,000. Assume a normal distribution with standard deviation equal to $10,000. a) What is the probability that a randomly selected teacher makes greater than $65,000 a year? b) If we sample 100 teachers’ salaries, what is the probability that the sample mean will be greater than $65,000?
[5]       3.   The average teacher’s salary is $45,000. Assume a normal distribution with standard                   deviation...
[5]       3.   The average teacher’s salary is $45,000. Assume a normal distribution with standard                   deviation equal to $10,000. What is the probability that a randomly selected teacher makes greater than $65,000 a year? If we sample 100 teachers’ salaries, what is the probability that the sample mean will be greater than $65,000?
2. The North Dakota department of transportation conducted a study to find the average amount of...
2. The North Dakota department of transportation conducted a study to find the average amount of time ND residents spend commuting during the fourth of July weekend. They surveyed 144 drivers and the study found out that the driver’s population spent an average of 20 hours commuting with a standard deviation of 10 hours. (a) What is the standard error of the mean? (b) Compute the probability the sample mean is greater than 20 hours? (c) Compute the probability the...
The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution...
The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500.What is the probability that a randomly selected teacher makes less than $49,000 per year?
The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries...
The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. Assume that the sample is taken from a large population and the correction factor can be ignored. Use a TI-83 Plus/TI-84 Plus calculator and round the answer to at least four decimal places. What is the probability that a randomly selected teacher makes less than $51,000 per year?
Libraries in North Dakota receive funding based on the number of people who join the library....
Libraries in North Dakota receive funding based on the number of people who join the library. To determine the number of people who joined the library, one library day is selected at random and the number of people who joined that day is counted and used for funding purposes. The daily number of no registration is approximately normally distributed with mean 120 students and standard deviation 10.5 students. (a) If more than 140 people are not joining on the day...
The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries...
The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. Assume that the sample is taken from a large population and the correction factor can be ignored. Use a TI-83 Plus/TI-84 Plus calculator and round the answer to at least four decimal places. If we sample 55 teachers' salaries, what is the probability that the sample mean is less than $55,700?
please show all work!!!The lengths of adult males' hands are normally distributed with mean 195 mm...
please show all work!!!The lengths of adult males' hands are normally distributed with mean 195 mm and standard deviation is 7 mm. Suppose that 43 individuals are randomly chosen. Round all answers to 4 where possible. What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For the group of 43, find the probability that the average hand length is less than 194. Find the third quartile for the average adult male hand length for this sample size. For part b),...
1) Automobile Workers A worker in the automobile industry works an average of 42.9 hours per...
1) Automobile Workers A worker in the automobile industry works an average of 42.9 hours per week.  If the distribution is approximately normal with a standard deviation of 1.4 hours, what is the probability that a randomly selected automobile worker works less than 41 hours per week? Round the answer to at least four decimal places. P(X<41) Teachers' Salaries The average annual salary for all U.S. teachers is 47750. Assume that the distribution is normal and the standard deviation is 5680....
The national average SAT score is 1070. If we assume a normal distribution with a standard...
The national average SAT score is 1070. If we assume a normal distribution with a standard deviation of 90. What is the probability that a randomly selected sample of size 8 has a mean score greater than 1150?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT