#### LoveStruck16

##### New member

- Joined
- Nov 18, 2009

- Messages
- 5

**- Determine whether an observed sample mean of 84 based upon a sample of n=25 is significantly different from a (null hypothesized) population mean of 81 with a standard deviation of 10.**

a) state your hypothesis

b) state your alpha value and the critical values

c) show your calculations

d) state your decision regarding the null hypothesis