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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.)

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