Using the simple random sample of weights of women from a data set, we obtain these...

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Question

Using the simple random sample of weights of women from a data set, we obtain these...

Using the simple random sample of weights of women from a data set, we obtain these sample statistics:

nequals=4545

and

x overbarxequals=142.29142.29

lb. Research from other sources suggests that the population of weights of women has a standard deviation given by

sigmaσequals=31.8431.84

lb.

a. Find the best point estimate of the mean weight of all women.

b. Find a

9595%

confidence interval estimate of the mean weight of all women.Click here to view a t distribution table.

LOADING...

Click here to view page 1 of the standard normal distribution table.

LOADING...

Click here to view page 2 of the standard normal distribution table.

LOADING...

a. The best point estimate is

nothing

lb.

(Type an integer or a decimal.)

b. The

9595%

confidence interval estimate is

nothing

lbless than<muμless than<nothing

lb.

(Round to two decimal places as needed.)

math Statistics-And-Probability

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Answer 1

Answer #1

sample sample size population std deviation X= 142.290 mean n 45,00 31.840 standard errror of mean ox-o/Vn 4.7464 for 95 % CI

a) best point estimate of the mean weight of all women =142.29

b)

95% confidence interval =132.99 < μ < 151.59

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Answer 2

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Using the simple random sample of weights of women from a data set, we obtain these...

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