05/04/23

Need more help for statistics
Assume body temperatures of adults are normally distributed. Based on this data, find the 80% confidence interval of the mean body temperature of adults in the town. Enter your answer as... more
Follows • 2
Expert Answers •1

05/02/23

what is the 90% confidence interval for chi squared
The EPA limit on the allowable discharge of suspended solids into rivers and streams is 60 milligrams per liter (mg/l) per day. A study of water samples selected from the discharge at a phosphate... more
Follows • 2
Expert Answers •1

03/15/23

In a recent poll, 320 people were asked if they liked dogs, and 62% said they did. Find the Margin of Error for this poll, at the 99% confidence level.

Give your answer to four decimal places if possible.
Follows • 1
Expert Answers •1

02/27/15

How large is this effect?
A new company has made the claim that its test preparation will improve SAT scores by 50 points. A skeptical educational psychologist has decided to test this theory, and has enlisted 40 students... more
Follows • 1
Expert Answers •1

10/29/14

How do i know if my data is normally distributed?
So apparently you should use t-test for paired observations, when n is small but normal distribution can be assumed. How do i know when it can be assumed? And how 'small' is small? n<50?  if so,... more
Follows • 2
Expert Answers •1

10/27/14

Multiple Linear Regression Question
The computer output shown below is part of the regression analysis to predict the height of the gold medal winning high jump in the Olympics based on year and gender.   Predictor        Coef    ... more
Follows • 1
Expert Answers •1

06/09/14

A sample of 400 bags of dog food which are advertised to contain twenty-five pounds had a mean content weight of 24.5
pounds with a standard deviation of 3 pounds.  Find a 95% confidence interval for the population mean content weight of the bags of dog food.
Follows • 1
Expert Answers •2

06/09/14

A car insurance company has recorded the number of claims for the past quarter by age and gender. The information is recorded below.
                      Male        Female Under 25         25           12 25-50              14            8 Over 50           12            9   If a claim is randomly selected, what is the... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.