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!
Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fifth, and sixth digits.Calculate the mean of the 20 samplesDraw a histogram showing the 20 sample means. (Use classes -0.5 to 0.5, 0.5 to 1.5, 1.5 to 2.5 and so on).Describe the distribution of the x-bars that you see in part b (shape of distribution, center, and the amount of dispersion).Draw 20 more samples and add the 20 new x-bars to the histogram in part b. Describe the distribution that seems to be developing.Use the empirical rule to test for normality. See the sampling distribution of sample means and the central limit theorem develop from your own data!Question 2Consider a population with μ = 43 and σ = 5.2.Calculate the z-score for an x¯ of 46.5 from a sample of size 35.Could this z-score be used in calculating probabilities using Table 3 in Appendix B? Why or why not?Question 3State the null and alternative hypotheses for each of the following:You want to show an increase in buying and selling of single-family homes this year when compared with last year's rate.You are testing a new recipe for "low-fat" cheesecake and expect to find that its taste is not as good as traditional cheesecake.You are trying to show that music lessons have a positive effect on a child's self-esteem.You are investigating the relationship between a person's gender and the automobile he or she drives-specifically you want to show that more males than females drive truck-type vehicles.
If she shoots 6 arrows, what is the probability of each result described below? a) Her first bull's-eye comes on the third arrow.
A restaurant monitors its customer's complaints, With information, which of the following is a Pareto chart of the data?
A major hurricane is a hurricane with wind speeds of 111 miles per hour or greater. During the 20th century, the mean number of major hurricanes to strike the U.S. mainland per year was about 0.7.
You're operating a business in very competitive market. You're not yet the dominant player, but you have invested heavily in marketing and product development and it has paid off with a steady growth rate of 10%.
Utilizing jacobian method finding the probability density function. Utilizing either the CDF method or Jacobian method illustrate the probability density function of Y is given.
Sum of shaded area is equal to one. Smoothed histogram or density curve. How we view the "distribution" of a dataset can depend on how much data we have and how it is binned.
Critically discuss the mean number of children per household for these families? Round your answer to at least one decimal place.
If the mean number of serious accidents per year in a large factory (where the number of employees remains constant) is five, find the probability that in the current year there will be:
Identify the null hypothesis, alternative hypothesis, test statistic, P-value and conclusion about the null hypothesis. Use the P-value method.
The question is, is it just sampling error that accounts for the difference, or is the local store different than the national numbers? This is a typical chi-square problem.
Four are slow songs, and six are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 10 songs if. The songs can be played in any order.
We know that the population variance is 16. Estimate the mean number of admissions per 24-hour period with a 95% confidence interval.
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