Question
In: Statistics and Probability
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.
Solutions
orchestra answered 2 years agoRelated Solutions
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.
A population has a mean of 245.3 and a standard deviation of 12.6. A sample of...
A population has a mean of 245.3 and a standard deviation of
12.6. A sample of 200 will be taken. Find the probability that the
sample mean will be less than 248.4.
a) Calculate the z score. (Round your answer to 2 decimals.)
b) Find the probability that the sample mean will be less than
248.4. (Round your answer to 4 decimals.)
I have calculated the following proportions: Population proportion: .222 population standard deviation = 12.6 Sample A...
I have calculated the following proportions:
Population proportion: .222
population standard deviation = 12.6
Sample A : .2
Sample B : .1
Sample C : .35
How should I go about testing the following hypothesis? How do
you prove it right or wrong for each sample individually?
Thanks!
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...
Assuming this right skewed population distribution had a population mean of 14.05 and a standard deviation of 11.83; calculate the probability that, in a random sample of 30, the mean of the sample is greater than 16.
a) Assuming this right skewed population distribution had a population mean of 14.05 and a standard deviation of 11.83; calculate the probability that, in a random sample of 30, the mean of the sample is greater than 16. First, draw a picture with the mean labeled, shade the area representing the desired probability, standardize, and use the Standard Normal Table (Table 2 in your text) to obtain this probability. Please take a picture of your hand drawn sketch and...
Claim: The standard deviation of pulse rates of adult males is more thanmore than 1111 bpm....
Claim: The standard deviation of pulse rates of adult males is
more thanmore than 1111 bpm. For a random sample of 143143 adult
males, the pulse rates have a standard deviation of 11.811.8 bpm.
Complete parts (a) and (b) below
Using NumPy etc. How to calculate a population mean and population standard deviation of a column...
Using NumPy etc. How to calculate a population
mean and population standard deviation of
a column with values. Also, how to calculate the range of
values around the mean that includes 95% confidence interval of
values within the column.
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