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!
Let X1, X2, . . . , X,. be a random sample from N(µ, er), where both parameters µ and u2 are unknown. A confidence interval for tr can be found as follows. We know that nS2/u 2 is x2(n - I ). Thus we can find constants a and b so that Pr (nS2/tr b) = 0.975 and Pr (a nS2/tr b) = 0.95.
(a) Show that this second probability statement can be written as Pr (nS2/b <>tr <>nS2/a) = 0.95.
(b) If n = 9 and s2 = 7.63, find a 95 percent confidence interval for u2.
(c) If µ is known, how would you modify the preceding procedure for finding a confidence interval for u2?
in a recent study 32 convicts were given a course in great works of literature. to be accepted for the program the
With a mean of 805 pairs of jeans and a standard deviation of 207 pairs. What is the probability that the company will make a profit each month?
a. Construct an estimate of the regression equation using the same variables. b. Produce the appropriate residual plots to determine if the linear function is the appropriate regression function for this data set.
Use regression to develop a trend line that could be used?to forecast monthly sales for the next year. Is the slope of?this line consistent with what you observed in question 1? ?If not, discuss a possible explanation.
suppose that an insurance agent offers you a policy that will provide you with a yearly income of 50000 in 30 years.
answer the followinga- if the correlation coefficient is -0.15 what is the sign of the slope of the regression line?b-
Suppose a random sample of 25 swatches are selected. What is the probability that the mean of the sample is less than 235 pounds per square inch.
A survey of a group of military personnel revealed the following information:
A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is known that the standard deviation of the population is 22 mph.
a population has a known standard deviation of 25. a simple random sample of 49 items is taken from the selected
a pair of dice is rolled 5 times. find the probability that a total of 11 occurs twice before a total of 5
lance a long time proprietor of a mens clothing store in peru illinois has noticed that in the past few years that he
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