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 construction company figures the cost of a project based on an average idle time of 68 minutes (per worker per 8 hour period). The std. dev is 10 minutes. A new work schedule has just been completed by the foreman. It is not known whether this schedule will change idle time or not. To determine if there is a change, a random sample of 49 workers was observed during an 8 hour shift. The average idle time was 65 minutes. Use a 5% significance level to determine if there is a change in idle time.
a. Find the critical values for z from the table
b. Find the z test statistic
c. Find the p-value for this test
d. Would you reject the null hypothesis at the 5% significance level?
e. If alpha were changed to 1%, would you reject the null hypothesis?
A company has been using the same advertising strategy for a number of years and over that time has had relatively constant monthly sales.
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
What is the probability that the percentage in the sample will deviate from the population percentage by no more than 7 percentage points?
Determine the standard score for the value x=452 realative to its sample, where the sample mean is 500 and the standard deviation is 32.
During the 2000 season, the home team won 138 of the 240 regular season National Football League games. Is this strong evidence of a home field advantage in professional football
Suppose a random sample of 20 tax returns from small business is examined. What is the binomial probability that at least one tax return involves fraud?
What is the 95% confidence interval for the standard deviation of birth weights at County General Hospital, if the standard deviation of the last 25 babies born there was 1.1 pounds.
given a standard normal distribution find the area under the curve which liesa to the left of a 1.43b to the right of
a study was performed to investigate the relationship betwee family income and ownership of a luxury car. 16 households
The following frequency table lists the sales of an item and the number of times it has occurred. It was obtained from historical records.
Describe the factors that might cause variation in weight of Tootsie Rolls during manufacture.
a random variable x takes values between 0 and 4 with a cumulative distribution functionfx x216 for 0 x 4a sketch
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