Question

Starting salaries of 140 college graduates who have taken a statistics course have a mean of $43,794 and a standard deviation of $8,646. Using 99% confidence, find both of the following: The margin of error: The confidence interval for the mean: μ μ :

Answer #1

Margin of error:

Starting salaries of 130 college graduates who have taken a
statistics course have a mean of $43,917 and a standard deviation
of $9,456. Using 99% confidence, find both of the following:
A. The margin of error E E
B. The confidence interval for the mean μ : < μ<

Starting salaries of 110 college graduates who have taken a
statistics course have a mean of $44,836. Suppose the distribution
of this population is approximately normal and has a standard
deviation of $10,796.
Using a 75% confidence level, find both of the following:
(a) The margin of error:
(b) The confidence interval for the mean μ: ____ < μ <
_____

(1 point) Starting salaries of 135 college graduates who have
taken a statistics course have a mean of $42,583. The population
standard deviation is known to be $9,171. Using 99% confidence,
find both of the following:
A. The margin of error:
B. Confidence interval: ,

Starting salaries of 64 college graduates who have taken a
statistics course have a mean of $42,500 with a standard deviation
of $6,800. Find a 68% confidence interval for ?μ. (NOTE: Do not use
commas or dollar signs in your answers. Round each bound to three
decimal places.)

Starting salaries of 64 college graduates who have taken a
statistics course have a mean of $43,500 with a standard deviation
of $6,800. Find a 68% confidence interval for μ. (NOTE: Do not use
commas or dollar signs in your answers. Round each bound to three
decimal places.)
Lower-bound:
Upper-bound:

Salaries of 45 college graduates who took a statistics course in
college have a mean (x overbar) of $69,800. Assuming a standard
deviation, σ, of $17,150, construct a 99% confidence interval
for estimating the population mean μ. (Don't round until end of
problem)
$_____<μ<$_____
(Round to the nearest integer as needed.)

Salaries of 45 college graduates who took a statistics course in
college have a mean, overbar x, of comma $65,500. Assuming a
standard deviation, sigmaσ, of $14 comma 14,971, construct a
99% confidence interval for estimating the population mean μ.
$ less than< μless than<$

Salaries of 47 47 college graduates who took a statistics course
in college have a mean, x overbar x, of $ 63 comma 400 $63,400.
Assuming a standard deviation, sigma σ, of $ 11 comma 850
11,850, construct a 99 99% confidence interval for estimating the
population mean mu μ.

Salaries of 45 college graduates who took a statistics course in
college have a mean, x, of $ 64,900 . Assuming a standard
deviation, q, of $19,881 , construct a 95 % confidence interval for
estimating the population mean u.
$ -----<μ< $------ round to nearest integer as needed

Salaries of 4747 college graduates who took a statistics course
in college have a mean, x overbarx, of $63,000. Assuming a
standard deviation, sigmaσ, of $16 comma 37216,372, construct
a
9090% confidence interval for estimating the population mean
μ.
(Round to the nearest integer as needed.)

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