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!
1) Pulte homes is developing two parcels near Medical Center in Houston, TX. In order to test different advertising approaches, they use different media to reach potential buyers. The mean annual family income for 85 customers making inquiries at the first development is $170K, with standard deviation of $45K. A corresponding sample of 110 customers at the second development had a mean of $190K, with standard deviation of $35K. At the 0.05 significance level, can pulte homes conclude that the population means are different?
2) A random sample of 30 observations from the first population revealed a sample mean of 305 and a sample standard deviation of 18. A random sample of 23 observations from the second population revealed a sample mean of 319 and a sample standard deviation of 25. At the 0.05 significance level, is there a difference in the population mean?
The lifetime of a color television picture tube is normally distributed with the mean of 7.8 years and a standard deviation of 3 years.
You are estimating the cost ($K) of optical sensors based on the power output of the sensor. Using the preliminary calculations from a data set of 8 sensors, determine the equation of the line. (Round your intermediate calculations to 3 decimal pl..
What is the decision regarding the null hypothesis (is there a difference in the mean numbers of cameras sold at the three department store chains)?
Interpret the estimated tolerance intervals and the confidence interval in the context of the situation related to the exercise.
Never forget that even small effects can be statistically significant if the samples are large. Of 148 small businesses, 106 were headed by men and 42 were headed by women.
Calculate the mean and standard deviation of the sample mean based on data from 100 stores.
You took the standard deviation of 4.5 minutes from a commuting friend and believe that that is the standard deviation for the area. Prepare a 95% confidence interval for the true average commuting time.
Pollsters try to determine whether or not a person is a "likely voter" before they count their opinion in a poll. If we assume 40% of the registered voters will actually vote, in a random sample of 100 registered voters we can be 95% confident tha..
Suppose we have randomly and independently sampled 25 women and asked each whether she has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic ..
A range of values constructed from sample data so that the parameter occurs within that range at a specified probability is:
To find the probability values in case of raw data, binomial, normal
Determine the best replacement policy over the next five years?
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