A) the best point of estimate is ______ lb. B) find a 95% confidence interval es

Question

A) the best point of estimate is ______ lb. B) find a 95% confidence interval estimate of the mean weight of all women. Question Help 73.35 using the simple random sample of weghts of women from a data set, we obtain these sam le statistics: n= 45 and x = 154 82 b. Research tom other sources suggests that the population of weights of women has a standard deviation given by = 30 85 lb a. Find the best point estimate of the mean weight of all women. b. Find a 95% confidence interval estimate of the mean weight of all women Click here to view a t distribution table Click here to view page 1 of the standard normal distribution table of the standard normal distribution table a.The best point estimate isb. (Type an integer or a decimal )

Explanation / Answer

a) The point estimate is xbar=154.82

b)

95% c.i=xbar+-Z(sigma/sqrt n)

=154.82+-1.96(30.85/sqrt 45)

=154.82+-9.0137

=145.8063 to 163.8337

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