# Question: use the given information to find the number of degrees...

###### Question details

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

chi Subscript Upper L Superscript 2

and

chi Subscript Upper R Superscript 2

,

and the confidence interval estimate of

sigma

.

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

Platelet Counts of Women

80

%

confidence;

nequals

27

,

sequals

65.9

.

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

dfequals

nothing

(Type a whole number.)

chi Subscript Upper L Superscript 2

equalsnothing

(Round to three decimal places as needed.)

chi Subscript Upper R Superscript 2

equalsnothing

(Round to three decimal places as needed.)

The confidence interval estimate of

sigma

is

nothing

less thansigmaless thannothing

.

(Round to one decimal place as needed.)