Saturday

October 25, 2014

October 25, 2014

Posted by **Tammy** on Tuesday, February 8, 2011 at 9:14pm.

* a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution.

* b. Find the mean of this sampling distribution.

* c. Find the standard error of this sampling distribution.

* d. What is the probability that this sample mean will be between 45 and 55?

* e. What is the probability that the sample mean will have a value greater than 48?

* f. What is the probability that the sample mean will be within 3 units of the mean?

- Math- Statistics -
**PsyDAG**, Wednesday, February 9, 2011 at 10:46ama. Sample mean not given, expect normality.

b. Without more info, expect sample mean = pop. mean

c. SEm = SD/√(n-1), but you can just use n

d, e, f. Z = (score-mean)/SEm

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

**Answer this Question**

**Related Questions**

Statistics - A random sample of size 36 is to be selected from a population ...

Stor - Here is a simple way to create a random variable X that has mean μ ...

statistics - Suppose a random sample of size 50 is selected from a population ...

statistics - Suppose a random sample of size 50 is selected from a population ...

Statistics - The null and alternate hypotheses are: H0: μ1 = μ2 H1: &#...

statistics - A specific study found that the average number of doctor visits per...

statistics - The scores of students on the ACT college entrance examination in ...

Statistics - The standard deviation for a population is σ = 15.3. A sample ...

Statistics - he Oil Price Information Center reports the mean price per gallon ...

Math (Statistic) - Considered the sampling distribution of a sample mean ...