Question
In: Statistics and Probability
You wish to test the claim that the standard deviation is greater than 1.9 at a...
You wish to test the claim that the standard deviation is greater than 1.9 at a level of significance of 1%. You select a random sample of 18 people and find the standard deviation is 2.7. Assume this is a normal distribution. compute the value of the standardized test statistic. round answer to thousandths place.
Solutions
Expert Solution
Here,
The value of the standardized test statistic = 34.330
orchestra answered 1 year agoRelated Solutions
1) You wish to test the claim that the first population mean is greater than the...
1)
You wish to test the claim that the first population mean is
greater than the second population mean at a significance level of
α=0.002α=0.002.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1>μ2Ha:μ1>μ2
You obtain the following two samples of data.
Sample #1
Sample #2
37.0
29.1
40.7
52.0
75.0
56.4
72.1
60.8
67.1
50.4
32.5
65.3
32.8
70.4
21.6
25.3
57.3
22.1
4.3
39.4
42.9
50.3
What is the test statistic for this sample?
test statistic = Round to 4 decimal places.
What is the...
You wish to test the claim that the first population mean is greater than the second...
You wish to test the claim that the first population mean is
greater than the second population mean at a significance level of
α=0.005
Ho:μ1=μ2
Ha:μ1>μ2
You obtain the following two samples of data.
Sample #1
Sample #2
57.7
63.3
64.3
70.1
53.6
69.6
72.2
67.3
70.1
31.0
55.7
63.8
71.4
71.4
83.6
87.9
102.3
34.9
84.5
75.1
78.5
58.8
What is the test statistic for this sample?
test statistic = _____________ Round to 3 decimal
places.
What is the...
You wish to test the claim that the first population mean is greater than the second...
You wish to test the claim that the first population mean is
greater than the second population mean at a significance level of
α=0.10
.
Ho:μ1=μ2
Ha:μ1>μ2
You obtain the following two samples of data.
Sample #1
Sample #2
76.2
68.1
90.1
74.7
77.1
72.9
70.3
84.0
75.9
80.1
65.7
80.1
76.2
82.0
81.7
74.5
75.1
73.3
45.5
47.8
46.1
55.5
53.7
40.0
67.4
54.6
What is the test statistic for this sample?
test statistic = Round to 3...
You wish to test the claim that the first population mean is greater than the second...
You wish to test the claim that the first population mean is
greater than the second population mean at a significance level of
α=0.002α=0.002.
Ho:μ1=μ2
Ha:μ1>μ2
You obtain the following two samples of data.
Sample #1
Sample #2
61.3
55.4
65.4
65.4
65.7
51.0
61.4
61.8
59.4
56.6
60.7
52.0
62.4
24.3
37.2
1.5
42.2
53.5
35.9
65.9
48.3
17.8
49.8
42.6
What is the test statistic for this sample?
test statistic = Round to 4 decimal places.
What is...
The claim “the standard deviation of a population is greater than 12.6” is tested using (a)...
The claim “the standard deviation of a population is greater
than 12.6” is tested using
(a) q-statistic.
(b) Chi-squared statistic.
(c) F-statistic.
(d) t-statistic.
(e) z-statistic.
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .05 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 38 individuals and find the
mean IQ score is 95.8, with a standard deviation of 15.2. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .05 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 38 individuals and find the
mean IQ score is 95.8, with a standard deviation of 15.2. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .01 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 79 individuals and find the
mean IQ score is 96.1, with a standard deviation of 14.8. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .025 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 60 individuals and find the
mean IQ score is 95.7, with a standard deviation of 16. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .05 significance level. You determine the
hypotheses are:
Ho: μ=100Ho: μ=100
H1:μ<100H1:μ<100
You take a simple random sample of 48 individuals and find the
mean IQ score is 97.3, with a standard deviation of 14.6. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three...
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