Thursday

October 2, 2014

October 2, 2014

Posted by **T** on Sunday, February 27, 2011 at 4:06pm.

a. What is the probability that the sample mean will be greater than M= 510. In symbols, what is p (M >520?

b. What is the probability that the sample mean will be greater than M = 520. In symbols, what is p (M>520?

c. What is the probability that the sample mean will be between M =510 and M = 520? In symbols, what is p (510 < M < 520?

- statistics -
**PsyDAG**, Monday, February 28, 2011 at 10:51amZ = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.

**Answer this Question**

**Related Questions**

statistics - The distribution of scores on the SAT is approx. normal with mu= ...

statistics - sat scores around the nation tend to have a mean score of about 500...

probability and statistics - the population of sat scores forms a normal ...

stats - SAT math scores approx. follow a normal distribution, with mean 500 and ...

statistics - Suppose a population distribution of SAT scores has population mean...

statistics - Suppose scores on the mathematics section of the SAT follow a ...

statistics - Suppose scores on the mathematics section of the SAT follow a ...

statistics - Sat scores l around the nation tend to have a mean score around 500...

statistics - SAT scores are normally distributed. The SAT in English has a mean ...

statistics/please check calculations - questions reads as follows: sat scores ...