Question

The following data represent the pH of rain for a random sample of 12 rain dates. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts (a) through (d) below.

DATA: 5.20, 5.72, 4.38, 4.80, 5.02, 5.16, 4.74, 5.19, 5.34, 4.76, 4.56, 4.68

(a) Determine a point estimate for the population mean.

A point estimate for the population mean is _______???? (round to 2 decimal places)

(b) Construct and interpret a 95% confidence interval for the mean pH of rainwater. Select the correct choice below and fill in the answer boxes to complete your choice.

(Use ascending order. Round to two decimal places as needed.)

A.There is a 95% probability that the true mean pH of rain water is between _____ and _______

B.There is a 95% confidence that the population mean pH of rain water is between ____ and _____.

C.If repeated samples are taken,95% of them will have a sample pH of rain water between ____and _____

(c) Construct and interpret a 99% confidence interval for the mean pH of rainwater. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.)

A.There is 99% confidence that the population mean pH of rain water is between ____ and _____

B.There is a 99%nprobability that the true mean pH of rain water is between ____ and ______

C.If repeated samples are taken, 99% of them will have a sample pH of rain water between ____ and _______

**(d)** What happens to the interval as the level
of confidence is changed? Explain why this is a logical
result.

As the level of confidence increases, the width of the interval

▼

increases.

decreases.

This makes sense since

▼

all confidence intervals of a given level of confidence have the same width.

including fewer numbers for consideration makes it more likely one of them is correct.

including more numbers for consideration makes it more likely one of them is correct.

Answer #1

The following data represent the pH of rain for a random sample
of 12 rain dates. A normal probability plot suggests the data could
come from a population that is normally distributed. A boxplot
indicates there are no outliers. Complete parts a) through d)
below.
5.58
5.72
4.38
4.80
5.02
5.03
4.74
5.19
4.61
4.76
4.56
5.30
(a) Determine a point estimate for the
population mean.
A point estimate for the population mean is
(Round to two decimal places as...

The following data represent the pH of rain for a random sample
of 12 rain dates. A normal probability plot suggests the data could
come from a population that is normally distributed. A boxplot
indicates there are no outliers. Complete parts (a) through (d)
below.
5.58
5.72
4.8
4.80
5.02
4.68
4.74
5.19
5.34
4.76
4.56
5.54
(a) Determine a point estimate for the population mean.
A point estimate for the population mean is _________.
(Round to two decimal places...

The following data represent the pH of rain for a random sample
of 12 rain dates. A normal probability plot suggests the data could
come from a population that is normally distributed. A boxplot
indicates there are no outliers. Complete parts a) through d)
below. 5.05 5.72 5.24 4.80 5.02 4.59 4.74 5.19 5.29 4.76 4.56 5.70
LOADING... Click the icon to view the table of critical t-values.
(a) Determine the population mean?
(b) Construct and interpret a
95%
confidence...

The following data represent the pH of rain for a random sample
of
12
rain dates in a particular region. A normal probability plot
suggests the data could come from a population that is normally
distributed. A boxplot indicates there are no outliers. The sample
standard deviation is
s=0.325.
Construct and interpret a
95%
confidence interval for the standard deviation pH of rainwater
in this region.
4.61
5.06
5.04
4.76
4.77
4.74
5.76
4.70
5.08
4.79
4.67
4.59
There is...

The following data represent the pH of rain for a random sample
of
12
rain dates in a particular region. A normal probability plot
suggests the data could come from a population that is normally
distributed. A boxplot indicates there are no outliers. The sample
standard deviation is
s=0.332
Construct and interpret a
90%
confidence interval for the standard deviation pH of rainwater
in this region.
4.634.63
5.195.19
4.934.93
4.894.89
4.714.71
4.754.75
5.705.70
4.854.85
5.125.12
4.654.65
4.664.66
4.46
Select the...

The following data represent the pH of rain for a random sample
of 12 rain dates. A normal probability plot suggests the data could
come from a population that is normally distributed. A boxplot
indicates there are no outliers. Complete parts a) through d)
below.
5.58 4.76 4.99 4.80
5.02 4.58 4.74 5.19
5.34 5.72 4.56 5.68
1)A point estimate for the population mean is
2)There is 95% confidence that the population mean pH of rain
water is between X...

The following data represent the pH of rain for a random sample
of 12 rain dates. A normal probability plot suggests the data could
come from a population that is normally distributed. A boxplot
indicates there are no outliers. Complete parts a) through d)
below.
5.30 5.02 5.29
5.72 4.58 4. 76
4.99 4.74 4.56
4.80 5. 19 5.71
(a) Determine a point estimate for the population mean
b. Construct a 90, 95, and 99% intervals for the mean pH...

The following data represent the pH of rain for a random sample
of 12 rain dates in a particular region.
4.54
5.31
5.10
4.88
4.77
4.83
5.69
4.77
5.11
4.84
4.65
4.55
A normal probability plot suggests the data could come from a
population that is normally distributed. A boxplot indicates there
are no outliers. The sample standard deviation is s=0.334.
Construct and interpret a 99% confidence interval for the
standard deviation pH of rainwater in this region.
Show work...

The following data represent the pH of rain for a random sample
of 12 rain dates. A normal probability plot suggests the data could
come from a population that is normally distributed. A boxplot
indicates there are no outliers. Complete parts a) through d)
below.
5.58
5.72
4.89
4.80
5.02
4.59
4.74
5.19
5.34
4.76
4.56
5.71
a. what is the point estimate
b construct a 99% interval
c. construct a 95% interval
d. construct a 90% interval

A survey was conducted that asked 1016 people how many books
they had read in the past year. Results indicated that x overbarx
=15.6 books and s =17.7 books. Construct a 98% confidence interval
for the mean number of books people read. Interpret the
interval.
Construct a 98% confidence interval for the mean number of
books people read and interpret the result. Select the correct
choice below and fill in the answer boxes to complete your choice.
(Use ascending order....

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