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 statistical abstract of the united states reports that the mean daily number of shares traded on the NYSE in 2002 was 1441million. Assume that the population standard deviation equals 500 million shares. Suppose, in a random sample of 36 days from the present year, the mean daily number of shares traded equals 1.5 billion. Let the confidence level be 95%.
a. Find the point estimate of the population mean.
b. Calculate Standard deviation/√n
c. Calculate Z (subscript-alphasymbol/2) interval for the 95% confidence level.
d. Compute and interpret the margin of error for a confidence interval for the 95% confidence level.
e. Construct and interpret the margin of error for a confidence interval for the 95% for the population mean.
f. How large a sample ( trading days) is needed to estimate the population mean number of sharesTraded per day to within 100 million with 95% confidence.
g. How large a sample (trading days) is needed to estimate the population mean number of shares traded per day within 10 million with 95% confidence? How many years does this number of days translate into?
A shop manual gives 6.5 hours as the average time required to perform a 30,000 mile major maintenance service on a Porsche 911. Last month a mechanic performed 11 such services, and his required times were as follows.
Pulse rate is an important measure of the fitness of a person's cardiovascular system. The mean pulse rate for all U.S. adult males is approximately 72 heart beats per minute.
Question 1 Which of the following indicates how many observations fall into various categories?
If student is chosen at random, determine the probability that he or she is sophomore and owns a credit card.
Each organization gets a 90% confidence interval. About how many of these intervals should cover the population average?
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
Using a present value table, your calculator, or a computer program present value function, answer the following questions. Assistance is needed with the formula to calculate the problems:
The university police department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows Poisson distribution with a mean of 9 tickets per day.
To assess opinion of students at Ohio State University about campus safety, reporter for student newspaper interviews 15 students she meets walking on campus.
Using Area of Residence (Area A or Area B) as my stratification factor, explain, in detail, how you would select a sample of 60 inhabitants by using stratified random sampling.
It is interested in estimating a 99.97% worst case for percentage of loan that defaults on the portfolio. Show how this varies with the copula correlation.
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