Question
In: Math
The following data represent the asking price of a simple random sample of homes for sale....
The following data represent the asking price of a simple random sample of homes for sale. Construct a 99% confidence interval with and without the outlier included. Comment on the effect the outlier has on the confidence interval.
$270,500 , $143,000 , $459,900 , $208,500 , $279,900 , $205,800 , $283,900 , $147,800 , $219,900 , $248,900 , $187,500 , $264,900
Solutions
milcah answered 1 year agoRelated Solutions
A sample of 150 homes for sale in ABC City showed a mean asking price of...
A sample of 150 homes for sale in ABC City showed a mean asking
price of $233,000, but the city claimed that the mean asking price
for the population was $255,000. The population standard deviation
of all homes for sale was $11,000. Use the p-value approach to
conduct a full hypothesis test (all steps) that can be used to
determine whether the mean asking price is significantly less than
$255,000. Let α = .10.
Let a random sample of 100 homes sold yields a sample mean sale price of $100,000...
Let a random sample of 100 homes sold yields a sample mean sale
price of $100,000 and a sample standard deviation of $5,000. Find a
99% confidence interval for the average sale price given the
information provided above.
Calculate the following:
1) Margin of error = Answer
2) x̄ ± margin error = Answer < μ < Answer
Table1 -
Common Z-values for confidence intervals
Confidence Level Zα/2
90% 1.645
95% 1.96
99% 2.58
Consider class data set to represent a simple random sample of the student. Construct the confidence...
Consider class data set to represent a simple random sample of
the student. Construct the confidence intervals required and also
write sample statistics calculated for each.
a) Calculate the 9% t-confidence interval for the mean pulse of
all the student
B) Calculate the 95%confidence interval for the true proportion
of all student who are registered
Voter Reg
Pulse Rate
64
75
74
65
72
72
60
66
60
69
89
64
71
50
80
80
62
85
60
65...
The following data represent the level of happiness and level of health for a random sample...
The following data represent the level of happiness and level of
health for a random sample of individuals from the General Social
Survey. A researcher wants to determine if health and happiness
level are related. Use the αα = 0.05 level of significance to test
the claim.
Health
Excellent
Good
Fair
Poor
Very Happy
271
261
82
20
Pretty Happy
247
567
231
53
Not Too Happy
33
103
92
36
*Source: General Social Survey
1) Determine the null and...
The following data represent the battery life, in hours, for a random sample of ten full...
The following data represent the battery life, in hours, for a
random sample of ten full charges on ipod music player.
7.3 10.2 12.9 10.8 12.1 6.6 10.2 9.0 8.5 7.1
a) construct a 90% confidence interval for the mean number of
hours the battery will last on this player.
b) Suppose you wanted more accuracy. What can be done to
increase the accuracy of the interval without changing the level of
confidence?
thank you.
The following data represent the pH of rain for a random sample of 12 rain dates....
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 5.72 4.99 4.80 5.02 4.57 4.74 5.19 5.29 4.76 4.56 4.91
(a) Determine a point estimate for the population mean. A point
estimate for the population mean is nothing. (Round to two decimal
places...
The following data represent the pH of rain for a random sample of 12 rain dates....
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.
c) Construct and interpret a 99%
confidence interval for the mean pH...
The following data represent the pH of rain for a random sample of 12 rain dates....
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 5.58
5.72 5.24 5.24 4.80 5.02 5.03 5.03 4.74 5.19 4.87 4.87 4.76 4.56
4.91 4.91
(a) Determine a point estimate for the population mean. A point
estimate for the population mean is nothing....
The following data represent the dividend yields? (in percent) of a random sample of 28 publicly...
The
following data represent the dividend yields? (in percent) of a
random sample of 28 publicly traded stocks.
2.55
0.47
1.59
0.44
0.07
2.53
0.14
2.04
0.47
2.98
0
2.88
3.2
0.31
0.57
3.43
2.35
0.97
1.31
2.94
0
0.37
0
1.93
0
1.61
0.44
0.23
Compute the? five-number summary
The following data represent the pH of rain for a random sample of 12 rain dates....
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 4.58 4.74 5.19 4.61 4.76 4.56 5.69
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