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!
Students in an introductory statistics class were asked to report the age of their mothers when they were born. Summary statistics include: n = 28 students, ¯x = 29.643 years, s = 4.564 years. The ages were normally distributed.
(a) Calculate the standard error of this sample mean.
(b) Determine and interpret a 90% confidence interval for the mothers mean age (at student's birth) in the population of all students at this university.
(c) How would a 99% confidence interval compare to the 90% interval in terms of its midpoint and half-width?
(d) Would you expect 90% of the ages in the sample to be within the 90% confidence interval? Explain why or why not.
(e) Even if the distribution of mothers ages were somewhat skewed, would this confidence interval procedure still be valid with these data? Explain why or why not.
Use Chebyshev's theorem to find what percent of the values will fall between 201 and 345 for a data set with a mean of 273 and standard deviation of 18.
What are the estimated monthly sales for a particular region with a population of 796,000, per capita income of $6,940, and an unemployment rate of 6.0 percent?
There are 4000 mangoes in a shipment. It is found that it a mean weight of 15 ounces with a standard deviation of 2 ounces.
Trauma center
Plot the market-share data. (b) Describe the trend (if any) and discuss possible causes. (c) Fit three trends (linear, exponential, quadratic).
question mimi was the 5th seed in 2012 umuc tennis open that took place in august. in this tournament she won 83 of
The height of a tree will be measured using a clinometer. For this device, the measurement error has a normal distribution with mean meter and standard deviation . If the tree is exactly 35 meters tall, what is the probability that the clinometer ..
Three consecutive even integers are such that the square of the third is 76 more than the square of the second. Find the three integers.
Collapse the response categories in the following tables so that it meets the assumptions of the chi-square test; than perform the test.
an mp3 manufacturer claims that 65 of teenagers 13 to 16 years old have their own mp3 player. a researcher wishes to
You create a 95% confidence interval for your average score and it is (76.347, 79.133). Given this information, what is the best conclusion?
Let F be a field and f(x), g(x) be elements of F[x]. Show that f(x) divides g(x) if and only if g(x) is an element of .
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