Question

You are interested in finding a 98% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 13 randomly selected non-residential college students.

28 | 12 | 25 | 14 | 15 | 12 | 5 | 18 | 28 | 7 | 6 | 18 | 24 |

a. To compute the confidence interval use a ? t z distribution.

b. With 98% confidence the population mean commute for non-residential college students is between and miles.

c. If many groups of 13 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles.

Answer #1

a.Since In this question the sample size is 13 which is less than 30 and population standard deviation is unknown then we will use t distribution to get the confidence interval for this problem.

b. In this question it has been given that,

n = 13,

Level of significance = 2%

Sample mean =

16.30769 |

Standard deviation =

8.055894 |

Note: Values of mean and standard deviation of data has been calculated by using the Excel. In data we have to select the whole range

c.About 98% of these confidence intervals will contain the true population mean number of commute miles and about 2% percent will not contain the true population mean number of commute miles.

You are interested in finding a 95% confidence interval for the
average commute that non-residential students have to their
college. The data below show the number of commute miles for 11
randomly selected non-residential college students.
28
13
27
7
19
16
22
13
6
7
16
If many groups of 11
randomly selected non-residential college students are surveyed,
then a different confidence interval would be produced from each
group. About ____ percent of these confidence intervals will
contain the...

You are interested in finding a 90% confidence interval for the
average commute that non-residential students have to their
college. The data below show the number of commute miles for 10
randomly selected non-residential college students. Round answers
to 3 decimal places where possible.
10 13 24 14 11 10 22 9 21 22
b. With 90% confidence the population mean commute for
non-residential college students is between and miles.
c. If many groups of 10 randomly selected non-residential
college...

You are interested in finding a 95% confidence interval for the
average commute that non-residential students have to their
college. The data below show the number of commute miles for 12
randomly selected non-residential college students. Round answers
to 3 decimal places where possible.
5
15
25
16
17
26
6
6
11
5
8
19
a. To compute the confidence interval use a ? t
z distribution.
b. With 95% confidence the population mean commute for
non-residential college students is...

You are interested in finding a 90% confidence interval for the
average commute that non-residential students have to their
college. The data below show the number of commute miles for 14
randomly selected non-residential college students. Round answers
to 3 decimal places where possible.
10
21
26
20
18
12
11
16
17
6
14
25
25
6
a. To compute the confidence interval use a ? z
t distribution.
b. With 90% confidence the population mean commute for
non-residential college...

You are interested in finding a 90% confidence interval for the
average commute that non-residential students have to their
college. The data below show the number of commute miles for 14
randomly selected non-residential college students. Round answers
to 3 decimal places where possible.
10
21
26
20
18
12
11
16
17
6
14
25
25
6
a. To compute the confidence interval use a ? z
t distribution.
b. With 90% confidence the population mean commute for
non-residential college...

You are interested in finding a 90% confidence interval for the
average commute that non-residential students have to their
college. The data below show the number of commute miles for 11
randomly selected non-residential college students. Round answers
to 3 decimal places where possible.
23
8
9
7
7
16
7
14
6
24
17
a. To compute the confidence interval use a
distribution.
b. With 90% confidence the population mean commute for
non-residential college students is between and miles....

You are interested in finding a 98% confidence interval for the
average number of days of class that college students miss each
year. The data below show the number of missed days for 10 randomly
selected college students. Round answers to 3 decimal places where
possible.
2
0
10
7
11
1
3
11
2
0
a. To compute the confidence interval use a ? t
z distribution.
b. With 98% confidence the population mean number of days of
class that...

You are interested in finding a 95% confidence interval for the
average number of days of class that college students miss each
year. The data below show the number of missed days for 12 randomly
selected college students.
3
12
8
1
10
10
6
1
7
7
4
9
a. To compute the confidence interval use a distribution.
b. With 95% confidence the population mean number of days of
class that college students miss is between answer _____ and...

You are interested in finding a 90% confidence interval for the
average number of days of class that college students miss each
year. The data below show the number of missed days for 10 randomly
selected college students.
11 0 10 11 3 11 8 9 4 3
a. To compute the confidence interval use a distribution.
b. With 90% confidence the population mean number of days of
class that college students miss is answer ____ between and answer
____...

You are interested in finding a 98% confidence interval for the
mean number of visits for physical therapy patients. The data below
show the number of visits for 12 randomly selected physical therapy
patients. Round answers to 3 decimal places where possible.
27
18
25
26
25
11
23
16
18
28
15
26
a. To compute the confidence interval use a distribution.
b. With 98% confidence the population mean number of visits per
physical therapy patient is between answer...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 5 minutes ago

asked 7 minutes ago

asked 17 minutes ago

asked 21 minutes ago

asked 22 minutes ago

asked 23 minutes ago

asked 23 minutes ago

asked 26 minutes ago

asked 31 minutes ago

asked 38 minutes ago

asked 45 minutes ago