Question

It has been reported that 70% of federal government employees use e-mail. If a sample of 165 federal government employees is selected, find the mean, variance, and standard deviation of the number who use e-mail. Round your answers to three decimal places Source: USA TODAY. Part 1 out of 2 Find the mean- Variance, and Standard Deviation Mean: μ

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
It has been reported that 70% of federal government employees use e-mail. If a sample of...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • find the variance and standard deviation Tosted by ALEKS Corp 5.3 Homework Previous 1 2 3...

    find the variance and standard deviation Tosted by ALEKS Corp 5.3 Homework Previous 1 2 3 4 5 6 7 8 Next Question 3 of 8 (1 point) View problem in a pop-up 5.3 Section Exercise 22 It has been reported that 89% of federal government employees use e-mail. If a sample of 180 federal government employees is selected, find the mean, variance, and standard deviation of the number who use e-mail. Round your answers to three decimal places. Source:...

  • 6 points The mean sury of federal government employees on a General Scale is $61,000. The...

    6 points The mean sury of federal government employees on a General Scale is $61,000. The population standard deviation 57000. The average salary of 50 federal government employees in Dubai is $59,000. These employees believe that their average salary is less than the mean salary of federal employees. Find the critical value, the test statistic and determine Hy is rejected or not at the a-0.011 level. (6 marks) Find the critical value give your answer to 2 decimal places e.g...

  • Dute. Harper's Index. FULL. 20. Tossing Coins Find the mean, variance, and standard deviation for the...

    Dute. Harper's Index. FULL. 20. Tossing Coins Find the mean, variance, and standard deviation for the number of heads when 10 coins are tossed. Sout. 67 Watching Fireworks A survey found that 21% of Americans watch fireworks on television on July 4. Find the mean, variance, and standard deviation of the number of individuals who watch fireworks on television on July 4 if a random sample of 1000 Americans is selected. Source: USA Snapshot, USA TODAY. nt of

  • storms four miles per hd 1% confid 1. The mean salary of federal government employees on...

    storms four miles per hd 1% confid 1. The mean salary of federal government employees on the General Schedule is $59, 593. The average salary of 30 state employees who do similar work is $58, 800 with a population standard deviation o = $1500. At a = 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees? rror (E)- er of cl I have 12 ch. .1 chy

  • USA Today reported that about 20% of all people in the United States are illiterate. Suppose...

    USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take seven people at random off a city street. (a) Make a histogram showing the probability distribution of the number of illiterate people out of the seven people in the sample (b) Find the mean and standard deviation of this probability distribution. (Round your answers to two decimal places.) μ =  people σ =  people Find the expected number of people in this sample who...

  • A population has a mean of 200 and a standard deviation of 70, Suppose a sample...

    A population has a mean of 200 and a standard deviation of 70, Suppose a sample of size 125 is selected and z is used to estimate μ. Use z-table a. What is the probability that the sample mean will be within :5 of the population mean (to 4 decimals)? 5762 b. What is the probability that the sample mean will be within t12 of the population mean (to 4 decimals)? 9474

  • Questions 15–17. A newspaper reported that 90% of youths use the Internet. Use this reported number...

    Questions 15–17. A newspaper reported that 90% of youths use the Internet. Use this reported number as the population proportion. A random sample of 900 youth is selected. Let p be the sample proportion of youths who use the Internet. 15. The distribution of p is closest to ✓(a) normal with mean 0.9 and standard deviation 0.01 (b) normal with mean 0.9 and standard deviation 0.3 (c) binomial with mean 0.9 and standard deviation 0.01 (d) binomial with mean 0.9...

  • Use th e confidence level and sample data to find a confidence interval for estimating the...

    Use th e confidence level and sample data to find a confidence interval for estimating the population 15) 42 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 26.7 pounds and a standard deviation of 2.9 pounds. What is the 95 percent confidence interval for the true mean weight, μ, of all packages received by the parcel service? 25.8 < μ < 27.6 b, 26.0< μ< 27.4 c. 25.7< μ< 27.7...

  • The Bureau of Economic Analysis in the U.S. Department of Commerce reported that the mean annual...

    The Bureau of Economic Analysis in the U.S. Department of Commerce reported that the mean annual income for a resident of North Carolina is $18,688 (USA Today, August 24, 1995). A researcher for the state of North Carolina wants to test the following hypothesis: Where μ is the mean annual income for a resident of North Carolina. The researcher gathers information from a sample of 625 residents of North Carolina and finds a sample mean of 17,076 with a sample...

  • 5. It has been reported that 20% of the voters were not in support of immigration...

    5. It has been reported that 20% of the voters were not in support of immigration reform in the country. A sample of 400 voters were randomly selected. (a) (3 points) Find the mean number of voters that are not in support of immi- gration reform in the country. (a) (b) (4 points) Find the standard deviation of the number of voters that are not in support of immigration reform in the country. (b) (c) (6 points) Find the probability...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT