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2. Which of the following conditions must be met for the hypothesis test to be valid? Select all that apply. |A. There must be an expected count of at least 5 in every cell of the table. OB. The sample size must be at least 30 or the population data must be normally distributed. OC. There must be at least 10 "success" and 10 "failure" observations. OD. The observations must be independent of one another. 3. What is the expected value for the number of Black drivers who were not wearing a seat belt? Expected value = 4. State the degrees of freedom for this test. df = 5. Calculate the test statistic: 6. What was the contribution toward this test statistic of Black drivers who were not wearing a seat belt? Test statistic = 7. Calculate the p-value for this test. p =

2. Which of the following conditions must be met for the hypothesis test to be valid? Select all that apply. |A. There must be an expected count of at least 5 in every cell of the table. OB. The sample size must be at least 30 or the population data must be normally distributed. OC. There must be at least 10 "success" and 10 "failure" observations. OD. The observations must be independent of one another. 3. What is the expected value for the number of Black drivers who were not wearing a seat belt? Expected value = 4. State the degrees of freedom for this test. df = 5. Calculate the test statistic: 6. What was the contribution toward this test statistic of Black drivers who were not wearing a seat belt? Test statistic = 7. Calculate the p-value for this test. p =

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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2. Which of the following conditions must be met for the hypothesis test to be valid? Select all that apply. A. There must be an expected count of at least 5 in every cell of the table. |B. The sample size must be at least 30 or the population data must be normally distributed. |C. There must be at least 10 "success" and 10 "failure" observations. D. The observations must be independent of one another. 3. What is the expected value for the number of Black drivers who were not wearing a seat belt? Expected value = 4. State the degrees of freedom for this test. df = 5. Calculate the test statistic: 6. What was the contribution toward this test statistic of Black drivers who were not wearing a seat belt? Test statistic = 7. Calculate the p-value for this test. p =
Transcribed Image Text:2. Which of the following conditions must be met for the hypothesis test to be valid? Select all that apply. A. There must be an expected count of at least 5 in every cell of the table. |B. The sample size must be at least 30 or the population data must be normally distributed. |C. There must be at least 10 "success" and 10 "failure" observations. D. The observations must be independent of one another. 3. What is the expected value for the number of Black drivers who were not wearing a seat belt? Expected value = 4. State the degrees of freedom for this test. df = 5. Calculate the test statistic: 6. What was the contribution toward this test statistic of Black drivers who were not wearing a seat belt? Test statistic = 7. Calculate the p-value for this test. p =
Buckle up! - How does seat belt use vary with drivers' ethnic group? It is well known that location and gender (males are less likely to buckle up) are factors. Here is the data and the mosaic plot for a random sample of male drivers observed in Houston. Ethnic group of driver Belted Not Belted Total Black 277 99 376 Hispanic 373 164 537 White 197 62 259 Total 847 325 1172 Ethnicity Hispanic Black White Use of Seat Belt wearing a seat belt not wearing a seat belt
Transcribed Image Text:Buckle up! - How does seat belt use vary with drivers' ethnic group? It is well known that location and gender (males are less likely to buckle up) are factors. Here is the data and the mosaic plot for a random sample of male drivers observed in Houston. Ethnic group of driver Belted Not Belted Total Black 277 99 376 Hispanic 373 164 537 White 197 62 259 Total 847 325 1172 Ethnicity Hispanic Black White Use of Seat Belt wearing a seat belt not wearing a seat belt
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