Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A random sample of 21 nickels measured with a very accurate micrometer showed a mean diameter of 0.834343 inches with a standard deviation of 0.001886 inches. a) Why would nickeldiameters vary?
b) Construct a 99 percent confidence interval for the true mean diameter of anickel.
c) Discuss any assumptions that are needed.
d) What sample size would ensure an error of± 0.0005 inches with 99 percent confidence? NBC asked a sample of VCR owners to record "Late Night with David Letterman" on their VCRs. Of the 125 VCR owners surveyed, 83 either "gave up or screwed up" because they did not understand how to program the VCR.
(a) Construct a 90 percent confidence interval for the true proportionof VCR owners who cannot program their VCRs.
(b) Would viewers of this program betypical of all television viewers? Explain.
A study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least 6 months to individuals following a conventional (low fat, low calorie )diet for at least 6 months.
Find the sample mean and sample standard deviation of the amount citizens spend per year. When finding a confidence interval for the true mean spent of ALL citizens, should we use a z-score or a t-score? Why?
a directory of personal computer retail outlets in the united states contains 12080 alphabetized entries. explain how
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
Of the 900 employees, 590 had college degrees, 120 were single, and 80 were single college graduates. Find the probability that an employee of the company is married and has a college degree.
use the normal approximation to binomial to find the probability for n 48 p 0.9 and x lt
Suppose 5.9% of certain population use public transportation to get to work. You randomly select 380 workers and ask them if they use public transportation to get to work.
in a certain population 60 of people have blond hair.a what is the probability that in a group of 10 people from this
It would like to be within plus or minus $55 of the true mean with a 95% confidence level. The standard deviation is thought to be $700. How many card holders should be sampled?
A random sample of 150 voters yields 87 who support her. The candidate wishes to test her claim at the 0.05 level of significance. Compute the value of test statistic.
greg stock is attempting to monitor a filling process that has an overall average of 705 cc. the averange range is 6
a sample of n 8 scores has a mean of m 12. one new score is added to the sample and the new mean is found to be m 13.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd