In this exercise, we are conducting many hypothesis tests to test a claim. Assume that the null hypothesis is true. If 40 tests are conducted using a significance level of 10% approximately how many of the tests will incorrectly find significance?
Solution:
We are given
n = 40 tests
Significance level = 10% = 0.10
10% of n = 0.10*40 = 4
So, about 4 out of 40 tests will incorrectly find significance.
In this exercise, we are conducting many hypothesis tests to test a claim. Assume that the...
In this exercise, we are conducting many hypothesis tests to test a claim. Assume that the null hypothesis is true. If 400 tests are conducted using a significance level of 2 % , approximately how many of the tests will incorrectly find significance?
we are conducting many hypothesis tests to test a claim. Approximately how many of the tests will yield significant results by chance, if the null hypothesis is true? a. 600 tests using a significance level of 5%. b. 70 tests using a significance level of 10%.
Assume that the null hypothesis is true. If 892 tests are conducted using a significance level of 2%, approximately how many of the tests will incorrectly find significance?
Multiple Choice. Circle the best answer. Make sure your answer is clearly marked. Ambiguous responses will be marked wrong. In a hypothesis test for H0: m1 = m2 vs Ha: m1 > m2,we have a sample with x1=26, x2=23. The randomization distribution will be centered around 3. (a) True (b) False A statistical test is used to determine whether results from a population are convincing enough to allow us to conclude something about the sample. (a) True (b) False Which...
a) We want to conduct a hypothesis test to test the claim that less than 40% of people prefer the aisle seat on airplanes using a 0.05 significance level. State the null and alternative hypotheses. b) Suppose the hypothesis test has been conducted and the test statistic is ? = −3. Find the P-value. Use normalcdf and sketch a curve to accompany your answer. Round to three decimal places. Show your work. c) State whether you should reject or fail...
Question 10 In conducting a hypothesis test with we find a test statistic with a p-value of 0.0389. Let the significance level be .010. The researcher would have: found another significance level rejected the null hypothesis not been able to draw a conclusion about the null hypothesis not rejected the null hypothesis
You are conducting a
multinomial Goodness of Fit hypothesis test for the claim that the
4 categories occur with the following frequencies: H o : p A = 0.3
; p B = 0.1 ; p C = 0.1 ; p D = 0.5 Complete the table. Report all
answers accurate to three decimal places. Category Observed
Frequency Expected Frequency A 50 B 38 C 19 D 66 What is the
chi-square test-statistic for this data? χ 2 = What...
You are conducting a multinomial Goodness of Fit hypothesis test for the claim that the 4 categories occur with the following frequencies: HoHo : pA=0.3pA=0.3; pB=0.2pB=0.2; pC=0.2pC=0.2; pD=0.3pD=0.3 Complete the table. Report all answers accurate to three decimal places. Category Observed Frequency Expected Frequency A 28 B 15 C 40 D 32 What is the chi-square test-statistic for this data? χ2=χ2= What is the P-Value? P-Value = For significance level alpha 0.005, What would be the conclusion of this hypothesis test? Fail to...
You are conducting a multinomial Goodness of Fit hypothesis test for the claim that the 4 categories occur with the following frequencies: HoHo : pA=0.4pA=0.4; pB=0.1pB=0.1; pC=0.2pC=0.2; pD=0.3pD=0.3 Complete the table. Report all answers accurate to three decimal places. Category Observed Frequency Expected Frequency Residual A 50 B 10 C 16 D 33 What is the chi-square test-statistic for this data? χ2=χ2= For significance level alpha 0.1, what is the chi-square Critical Value? Critical Value = What would be the conclusion of this...
You are conducting a multinomial Goodness of Fit hypothesis test for the claim that the 4 categories occur with the following frequencies Complete the table. Report all answers accurate to three decimal places Observed Expected Category Frequency Frequency A 51 B 30 С 137 D 41 What is the chi-square test-statistic for this data? What is the P-Value? P-Value- For significance level alpha 0.05, What would be the conclusion of this hypothesis test? O Fail to reject the Null Hypothesis...