Question

Use the given information to find the number of degrees of​ freedom, the critical values

chi Subscript Upper L Superscript 2χ2L

and

chi Subscript Upper R Superscript 2χ2R​,

and the confidence interval estimate of

sigmaσ.

It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution.Nicotine in menthol cigarettes

8080​%

​confidence;

nequals=2929​,

sequals=0.250.25

mg.

LOADING...

Click the icon to view the table of​ Chi-Square critical values.

df=

​(Type a whole​ number.)

Answer 1

= 0.20

n = 29

s = 0.25

df = n - 1 = 29 - 1 = 28

From Table:

Confidence Interval:

Low End:

High End:

Confidence Interval:

0.2148 < < 0.304

Answers to questions asked:

df = n - 1 = 28

Confidence Interval:

0.2148 < < 0.304