If I have the 2 - 25 piece samples and ran the analysis in MS Excel...
If I have the 2 - 25 piece samples and ran the analysis in MS Excel for "F-Test 2 Sample for Variance", I would reject Ho if the the p-value was less than level of significance, α.
True
False
Homework Answers
The given statement is true.
If the p value is less than or equal to the significance level (denoted by alpha) we reject the null hypothesis (Ho) because test statistic falls in rejection area.
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If I have the 2 - 25 piece samples and ran the analysis in MS
Excel...
α is the probability of a Type I error, which occurs when we accept the alternative...
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Suppose you want to test the claim that µ1 < µ2. Two samples are randomly selected...
Suppose you want to test the claim that µ1 < µ2. Two samples
are randomly selected from each population. The sample statistics
are given below. At a level of significance of α = 0.05, when
should you reject H0?
n1 = 35
n2 = 42
x̅1 = 29.05 x̅2 =
31.6
s1 =
2.9
s2 = 2.8
Suppose you want to test the claim that u1<p2. Two samples are randomly selected from each population. The sample statistics are given...
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Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, zp-2.51, and α-0.10 b) one-tail (lower) test, zp--1 .34, and α: 0.05 c) two-tail test, Zp-_ 1.89, and α: 0.05 d) two-tail test, z1.58, and a 0.02 Click here to view the first page of the standard normal table, Click here to view the second page of the standard normal table. a) p-value (Round to four decimal places as...
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A random sample of five observations from three normally distributed populations produced the following data: (You...
A random sample of five observations from three normally distributed populations produced the following data: (You may find it useful to reference the F table.) Treatments A C 20 1 9 25 25 22 27 21 24 24 26 2.1 22 23 19 XR - 23 SR6.5 S 4.5 S 4.5 Click here for the Excel Data File f. At the 5% significance level, what is the conclusion to the test? Reject Ho since the p-value is less than significance...
It has long been stated that the mean temperature of humans is 98.6 degrees°F. However, two...
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98.6 degrees°F. However, two researchers currently involved in the
subject thought that the mean temperature of humans is less than
98.6 degrees°F. They measured the temperatures of 50 healthy adults
1 to 4 times daily for 3 days, obtaining 225 measurements. The
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the ques...
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Given below are the analysis of variance results from a Minitab display. Assume that you want...
Given below are the analysis of variance results from a Minitab display. Assume that you want to use a 0.05 significance level in testing the null hypothesis that the different samples come from populations with the same mean. 15) Fill in the Blank. What's the P-Value? What can you conclude about the equality of the population means? Source DF SS MS F P Factor 3 13.500 4.500 5.17 0.011 Error 16 13.925 0.870 Total 1927.425 O p=0.870, reject HO OP-Value...
Suppose you want to test the claim that µ1 < µ2. Two samples
are randomly selected from each population. The sample statistics
are given below. At a level of significance of α = 0.05, when
should you reject H0?
n1 = 35
n2 = 42
x̅1 = 29.05 x̅2 =
31.6
s1 =
2.9
s2 = 2.8
Suppose you want to test the claim that u1<p2. Two samples are randomly selected from each population. The sample statistics are given...
Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, zp-2.51, and α-0.10 b) one-tail (lower) test, zp--1 .34, and α: 0.05 c) two-tail test, Zp-_ 1.89, and α: 0.05 d) two-tail test, z1.58, and a 0.02 Click here to view the first page of the standard normal table, Click here to view the second page of the standard normal table. a) p-value (Round to four decimal places as...
Independent random samples were selected from each of two normally distributed populations, n = 6 from population 1 and n2 = 5 from population 2. The data are shown in the table to the right. Complete parts a through c below. 4.7 4.6 1.6 2.3 1.2 3.8 0.6 3.9 C. Test Ho: 02202 against He:0; >o. Use a = 0.01. Determine the test statistic. F= (Round to two decimal places as needed.) Find the p-value. p= (Round to three decimal...
A random sample of five observations from three normally distributed populations produced the following data: (You may find it useful to reference the F table.) Treatments A C 20 1 9 25 25 22 27 21 24 24 26 2.1 22 23 19 XR - 23 SR6.5 S 4.5 S 4.5 Click here for the Excel Data File f. At the 5% significance level, what is the conclusion to the test? Reject Ho since the p-value is less than significance...
It has long been stated that the mean temperature of humans is
98.6 degrees°F. However, two researchers currently involved in the
subject thought that the mean temperature of humans is less than
98.6 degrees°F. They measured the temperatures of 50 healthy adults
1 to 4 times daily for 3 days, obtaining 225 measurements. The
sample data resulted in a sample mean of 98.3 degrees°F and a
sample standard deviation of 11 degrees°F. Use the P-value
approach to conduct a hypothesis...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 24) Find the critical value. 24) Source DF SS MS F P treatments 3 13.500 4.500 5.17 0.011 16 13.925 0.870 19 27.425 Total C) 3.06 A) 8.70 B) 3.24 D) 5.42 25) What can you conclude about the equality of the population means? Use level of significance of 25) 0.05 SourceDF SS MS F treatments 3 13.500 4.500 5.17 0011 16 13.925 0.870 Total...
Given below are the analysis of variance results from a Minitab display. Assume that you want to use a 0.05 significance level in testing the null hypothesis that the different samples come from populations with the same mean. 15) Fill in the Blank. What's the P-Value? What can you conclude about the equality of the population means? Source DF SS MS F P Factor 3 13.500 4.500 5.17 0.011 Error 16 13.925 0.870 Total 1927.425 O p=0.870, reject HO OP-Value...
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