Question

Studies show that massage therapy has a variety of health
benefits. A sample of 41 typical one-hour massage therapy sessions
showed an average charge of $65. The population standard deviation
for a one-hour session is $5.54. Estimate with 97% confidence the
average charge of all one-hour massage therapy
sessions. **(Round to 2 decimal
places.)**

Complete the following sentence to provide an interpretation of the confidence interval in the context of the problem:

We are 97% confident that the (Click to select)samplepopulation (Click to select)meanstandard deviation charge of (Click to select)all41 one-hour massage therapy sessions is between and dollars.

Answer #1

97% confidence interval for is

- Z * / sqrt(n) < < + Z * / sqrt(n)

65 - 2.1701 * 5.54 / sqrt(41) < < 65 + 2.1701 * 5.54 / sqrt(41)

63.12 < < 66.88

95% CI is **( 63.12 , 66.88 )**

Interpretation -

We are 97% confident that the population mean charge of all 41 one hour massage therapy sessions

is between 63.12 and 66.88 dollars.

Studies show that massage therapy has a variety of health
benefits. A sample of 35 typical one-hour massage therapy sessions
showed an average charge of $60. The population standard deviation
for a one-hour session is $5.42. Estimate with 91% confidence the
average charge of all one-hour massage therapy sessions.
We are 91% confident that the (Click to
select)populationsample (Click to select)standard
deviationmeanproportion charge of (Click to
select)all35 one-hour massage therapy sessions is
between and dollars.

Studies show that massage therapy has a variety of health benefits
and it is not too expensive. A sample of 10 typical one-hour
massage therapy sessions showed an average charge of $61. The
population standard deviation for a one hour session is s= $5.
a. using 90% confidence, what is the margin of error (to 2
decimals?)
b. using 95% confidence, what is the margin of error (to 2
decimals?)

Studies show that massage therapy has a variety of health
benefits and it is not too expensive. A sample of 11 typical
one-hour massage therapy sessions showed an average charge of $58.
The population standard deviation for a one-hour session is
$4.95.
a. What assumptions about the population should
we be willing to make if a margin of error is desired?
b. Using 90% confidence, what is the margin of
error (to 2 decimals)?
c. Using 95% confidence, what is...

Studies show that massage therapy has a variety of health
benefits and it is not too expensive. A sample of
11 typical one-hour massage therapy sessions
showed an average charge of $61. The population
standard deviation for a one-hour session is =
$5.3 .
a. What assumptions about the population should
we be willing to make if a margin of error is desired?
- Select your answer -The population has uniform distribution,
The population is at least approximately normal is...

You may need to use the appropriate appendix table or technology to
answer this question.
Studies show that massage therapy has a variety of health benefits
and it is not too expensive. A sample of 11 typical one-hour massage therapy
sessions showed an average charge of $51. The population standard
deviation for a one-hour session is
σ = $7.5.
(a)
What assumptions about the population should we be willing to make
if a margin of error is desired?
We should...

Population Standard Deviation
5.0000
Sample Size
11
Sample Mean
54.9091
Confidence Interval
Confidence Coefficient
0.98
Lower Limit
Upper Limit
Hypothesis Test
Hypothesized Value
50
Test Statistic
P-value (Lower Tail)
P-value (Upper Tail)
P-value (Two Tail)
0.0012
Sample Size
11
Sample Mean
54.9091
Sample Standard
Deviation
5.5759
Confidence Interval
Confidence Coefficient
0.98
Lower Limit
Upper Limit
Hypothesis Test
Hypothesized Value
50
Test Statistic
P-value (Lower Tail)
P-value (Upper Tail)
P-value (Two Tail)
0.0154
Studies show that massage therapy has a variety...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 8 minutes ago

asked 26 minutes ago

asked 26 minutes ago

asked 30 minutes ago

asked 30 minutes ago

asked 31 minutes ago

asked 39 minutes ago

asked 41 minutes ago

asked 47 minutes ago

asked 51 minutes ago

asked 51 minutes ago

asked 52 minutes ago