Question

the mean rate for satellite for sample of households was $49.00 per month, with a standard deviation of $2.50 per month. find the missed value in the following interval if it contains 97.35% of all data values?

Answer #1

The mean rate for satellite television from a
sample of households was $49.00 with a
standard deviation of $2.50. Assume that the
distribution of satellite television rates is symmetric and
bell-shaped.
a) Approximately 68% of households pay
between
(b) Approximately what percentage of households pays
more than $54.00?
(c) Approximately what percentage of households pays
less than $41.5?
(d) If the rate of satellite television is $46.5, what is the
corresponding z-score?
2)
Consider the following probability distribution for a...

The mean rate for cable television from a sample of households was
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that the data set has bell-shaped distribution.
Between what two values do about 99.7% of the data fall?

A sample of households shows the following statistics about
household income:
Mean: 60000
Standard Deviation: 5000
Sample Size: 10
At the 80% confidence level, what is the upper limit for the
confidence interval formed with these values? Round to 2 decimal
places.

1. A sample of households in Colorado shows the following
statistics about household income:
Mean: 67000
Standard Deviation: 5700
Sample Size: 17
At the 87% confidence level, what is the upper limit for the
confidence interval formed with these values? Round to 2 decimal
places.
AND
2.
A sample of households in Colorado shows the following
statistics about household income:
Mean: 60000
Standard Deviation: 5000
Sample Size: 10
At the 80% confidence level, what is the lower limit the
confidence...

1) A sample of 143 households yielded
an average income of $1500 per month with a standard deviation of
$514. The researcher wants to test at the 10% level of significance
that the average monthly income of all households is not greater
than $1575. What is the alternative hypothesis of this test?
Select one:
a. Mean = $1575
b. Mean > $1575
c. Mean < $1575
d. Mean ≠ 1575
2) Last year a sample of 164 farmers had an...

The mean consumption of water per household in a city was 1238
cubic feet per month. Due to a water shortage because of a drought,
the city council campaigned for water use conservation by
households. A few months after the campaign was started, the mean
consumption of water for a sample of 96 households was found to be
1153 cubic feet per month. The population standard deviation is
given to be 261 cubic feet.
a. Find the p-value for the...

The mean consumption of water per household in a city was 1210
cubic feet per month. Due to a water shortage because of a drought,
the city council campaigned for water use conservation by
households. A few months after the campaign was started, the mean
consumption of water for a sample of 94 households was found to be
1167 cubic feet per month. The population standard deviation is
given to be 223 cubic feet.
a. Find the p-value for the...

The mean consumption of water per household in a city was 1218
cubic feet per month. Due to a water shortage because of a drought,
the city council campaigned for water use conservation by
households. A few months after the campaign was started, the mean
consumption of water for a sample of 94 households was found to be
1181 cubic feet per month. The population standard deviation is
given to be 216 cubic feet.
a. Find the p-value for the...

In a simple random sample of 145 households, the sample mean
number of personal computers was 1.36 . Assume the population
standard deviation is .48
(a) Construct a 98% confidence interval for the mean number of
personal computers. Round the answer to at least two decimal
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In a sample of 100 households, the mean number of hours spent on
social networking sites during the month of January was 50 hours.
In a much larger study, the standard deviation was determined to be
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is the 98% confidence interval for the mean hours devoted to social
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A
The 98% confidence interval ranges from 6 to 50 hours.
B
The 98% confidence interval ranges from...

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