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!
The U.S. Department of Transportation reported the number of miles that residents of metropolitan areas travel per day in a car. Suppose a simple random sample of 15 residents of Detroit provided the following data on car miles per day.
20 20 28 16 11 17 23 16 22 18 10 22 29 19 32
A) Compute a 95% confidence interval estimate for the population mean number of miles that residents of Detroit travel per day in a car.
B) What assumption must you make in order to calculate the confidence interval in part A?
C) Suppose it is desired to estimate the population mean number of miles with a margin of error of ± 2 miles at 95% confidence. Do the data provide this desired level of precision? What action, if any, would you recommend be taken?
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50 with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the follo..
Assume the population is normally distributed, the confidence level is 95%, n = 12, and σ is unknown.
The participants in a television quiz show are picked from a large pool of applicants with approximately equal numbers of men and women.
Do the above values appear to be in statistical control, justify your answer?
What would be the most appropriate graphical representation to show the dispersion of new home prices in a particular area? Why?
A random sample results in 1 = 20 with n1 = 100. The population standard deviation is σ1 = 6. Another sample was selected independently resulting in 2 = 22 with n2 = 100. The population standard deviation is σ2 = 7. Test that the population means ..
Any person who is familiar with these trees understand the height of a California redwood tree which is related to another characteristics of the tree.
A market researcher wants to find the 99% Confidence Interval for the average number of hours people spend online each day.
Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.
Carry out the ANOVA and, if essential, post-hoc comparisons. Make a graph to represent group differences, and interpret ANOVA in a paragraph written in APA style.
The State Department of education requires local school districts to keep records on all students within their district. Determine if the following items are categorical or numeric variables.
Create the 90% confidence interval for mean score of all such subjects. You may suppose scores are usually distributed.
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