Monday

September 1, 2014

September 1, 2014

Posted by **MBAhopeful** on Saturday, October 3, 2009 at 10:50am.

Weights

15.2

15

14.3

15.3

15.2

14.4

15.1

15.4

15.5

15.7

15.6

15.4

15.3

15.7

15.2

15

15.4

15.5

15.1

15.3

15.6

14.3

14.9

15.1

14.6

14.8

15.3

14.5

14.6

15.1

At the 0.05 level of significance, is there evidence that the population standard deviation differs from 0.25 ounces?

What assumptions are made in order to perform this test?

- statistics -
**MathMate**, Saturday, October 3, 2009 at 1:26pmFirst establish a null hypothesis

H0 : population σ² = 0.25²

n = 30

Calculate the sample variance, s.

calculate the Χ² statistic

Χ² = (n-1)*s²/σ²

Look up the Χ² table for 29 degrees of freedom and 5 and 95% levels of confidence.

If the calculated Χ² falls between these limits, the null hypothesis is not rejected.

**Related Questions**

math - Courtney wanted to share raisins with Norman and Mark. She counted 36 ...

Math - Marcy paid $35 for 10 kg of raisins. She divided raisins equally into two...

statistics - Sugar packaged by a certain machine has a mean weight of 5 lb and a...

Statistics - A packaging device is set to fill detergent power packets with a ...

math - Rebecca is a chef at Denny's Deli. She wants to try a new recipe, Sweet ...

statistics - a packaging device is set to fill detergent powder packets with a ...

statistics - question- a packaging device is set to fill detergent powder ...

marketing research - A packaging device is set to fill detergent power packets ...

math - a company sells snack-size boxes of raisins with dimensions 5 in. by 2.5 ...

Statistics - Statistics students were asked to go home and fill a 1-cup measure ...