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!
In a study on infants, one of the characteristics measured was head circumference. The mean head circumference of 8 infants was 34.4 cm.
a. Assuming that head circumferences are normally distributed with standard deviation 2.1 cm, determine a 90% confidence interval for the mean head circumference of all infants.
b. Obtain the margin of err,r E, for the confidence interval you found in part (a)
c. Determine the sample size required to have a margin of error of 0.7 cm with a 95% confidence level.
Compute the variance and standard deviation of the number that will arrive within two days.
a researcher is considering using 90 confidence interval for his research project instead of 95. what happens to the
The samples do indicate that university A's students are younger than university B's; but is the difference significant at the 1% level?
For a study that consists of personal interviews with participants (rather than mail or phone surveys), explain why simple random sampling might be less practical than some other sampling methods.
To estimate the size of the bear population on the Keweenaw Peninsula, conservationists captured, tagged, and released 50 bears. One year later a random sample of 100 bears included only 2 tagged bears.
Let Xt=1+e t- 0.5et-1 , t=1,2,3,...., where et~llD(0,2),the variance of et is 2. a) Compute the mean of Xt b) Compute the variance of Xt c) Find the correlation between Xt and et-1
u.s. bureau of the census data reveal the largest town in the state of oh has a population of one million families. the
determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution student t
evaluate the practice of altering the alpha level so that a two-tailed test will have a 5 rejection region on both
show work or explain how you got the answersuppose that an eddy current nondestructive evaluation technique for
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.
The data indicate a significant relationship between schizophrenia and the season of birth?
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