Please help with question. Thanks

Statistics
Tutor: None Selected Time limit: 1 Day

Suppose that  and  are independent events such that  and  .

Find  and 

Jun 21st, 2015

Thank you for the opportunity to help you with your question!

Hi which is your question so that i can help you out.

Thanks

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 21st, 2015

Hello question is below.

The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an average (mean) of  pounds with a standard deviation of  pounds. In a recent study, a group of  people who used this pill were interviewed. The study revealed that these people lost a mean of  pounds after one week. If the producer's claim is correct, what is the probability that the mean weight loss after one week on this pill for a random sample of  individuals will be  pounds or less?

Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.


Jun 21st, 2015

okay

Jun 21st, 2015

 find P(x-bar < =1.95) = ?

z=(1.95 - 1.80)/(1.02 / sqrt(55))

z=  0.15/0.13753
z= 1.0908

P(x-bar < =1.95) = P(z < =1.0908)= 1.0908 Answer
All the best


Jun 21st, 2015

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