Gender/Color Black Brown Blonde Other Total Male 144 113 118 147 522 Female 117 110 124 115 466 Total 261 223 242 262 988 The contingency table shows a random sample of people divided up by gender and hair color. At a 1% Level of Significance, test to determine whether gender and hair color are independent. 1. The hypotheses are : O Ho:Gender and hair color are not independent Ha:Gender and hair color are independent O Ho:Gender and hair color are independent Ha:Gender and hair color are not independent 2. This is a O rightO twoO left tailed test; d.f. = %3D 3a. The STS (to 2 decimals) is x 3b. The P-value (to 3 decimals) = 4a. The decision at a = 1% is O Do not reject Ho O Reject Ho

Gender/Color Black Brown Blonde Other Total Male 144 113 118 147 522 Female 117 110 124 115 466 Total 261 223 242 262 988 The contingency table shows a random sample of people divided up by gender and hair color. At a 1% Level of Significance, test to determine whether gender and hair color are independent. 1. The hypotheses are : O Ho:Gender and hair color are not independent Ha:Gender and hair color are independent O Ho:Gender and hair color are independent Ha:Gender and hair color are not independent 2. This is a O rightO twoO left tailed test; d.f. = %3D 3a. The STS (to 2 decimals) is x 3b. The P-value (to 3 decimals) = 4a. The decision at a = 1% is O Do not reject Ho O Reject Ho

Name: Gender/ColorBlackBrownBlondeOtherTotalMale144113118147522Female117110
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Description: Gender/ColorBlackBrownBlondeOtherTotalMale144113118147522Female117110124115466Total261223242262988The contingency table shows a random sample of people divided up by gender and hair color. At a 1% Levelof Significance, test to determine whether gend

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.01 significance level, test the claim that injuries are independent of helmet color. Color of Helmet Black 493 Yellow Blue 61 White Red Controls (not injured) Cases (injured or killed) 372 29 167 207 109 7 71 30 Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Choose the correct answer below. A. Họ: Injuries and helmet color are independent H1: Injuries and helmet color are dependent O B. Ho: Whether a crash occurs and helmet color are independent H,: Whether a crash occurs and helmet color are dependent O C. Ho: Whether a crash occurs and helmet color are dependent H: Whether a crash occurs and helmet color are independent O D. Ho: Injuries and helmet color are dependent H;: Injuries and…
Magazine A national publishing house claims that 28% of all weekly magazine readers in SA read their publication. Test this claim at the 1% significance level, if a survey found that 104 out of a random sample of 400 magazine readers said that they read the specific publication.
Winning team data were collected for teams in different sports, with the results given in the accompanying table. Use a 0.05 significance level to test the claim that home/visitor wins are independent of the sport. Given that among the four sports included here, baseball is the only sport in which the home team can modify field dimensions to favor its own players, does it appear that baseball teams are effective in using this advantage? Click the icon to view the data table. Determine the null and alternative hypotheses. Choose the correct answer below. A. Ho: Basketball games are more likely to win at home than any other sport. H₁: Basketball games are not more likely to win at home than any other sport. OB. Ho: The home/visitor win is independent of the sport. H₁: The home/visitor win is not independent of the sport. OC. Ho: The home/visitor win is dependent on the sport. H₁: The home/visitor win is not dependent on the sport. OD. Ho: Basketball games are not more likely to win at…
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A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.01 significance level, test the claim that injuries are independent of helmet color. D Black Color of Helmet Yellow 32 Blue White 331 Controls (not injured) Red 159 482 100 Cases (injured or 211 109 8 65 47 killed) Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: Whether a crash occurs and helmet color are dependent H₁: Whether a crash occurs and helmet color are independent OB. Ho: Injuries and helmet color are dependent H₁: Injuries and helmet color are independent OC. Ho: Whether a crash occurs and helmet color are independent H₁: Whether a crash occurs and helmet color are dependent O D. Ho: Injuries and helmet color are independent H₁: Injuries…
A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.05 significance level, test the claim that injuries are independent of helmet color. Black; White; Yellow; Red; Blue Controls (not injured) 500; 355; 32; 173; 79 Cases (injured or killed) 220; 115; 9; 71; 38
Is there an association between hair color and body type? The table below shows the results of a researcher's observations of randomly selected people. Frequencies of Hair Colors for Various Body Types Blonde Brunette Red Head 84 98 61 110 53 49 Short and Slender Short and Pudgy Tall and Slender Tall and Heavy What can be concluded at the a = 0.05 significance level? a. What is the correct statistical test to use? O Independence O Homogeneity O Goodness-of-Fit O Paired t-test 109 107 60 80 78 63 b. What are the null and alternative hypotheses? Ho: O Hair color and body type are independent. O The distribution of hair color is the same for each body type. O Hair color and body type are dependent. O The distribution of hair color is not the same for each body type. H₁: O The distribution of hair color is not the same for each body type.
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A researcher is interested in investigating whether religious affiliation and the brand of sneakers that people wear are associated. The table below shows the results of a survey. Frequencies of Religions and Sneakers Other Nike Adidas Protestant 95 83 100 Catholic 68 69 93 Jewish 15 23 26 Other 76 81 94 What can be concluded at the a = 0.10 significance level? a. What is the correct statistical test to use? Independence Homogeneity Goodness-of-Fit Paired t-test b. What are the null and alternative hypotheses? Но: Sneaker brand and religious affiliation are dependent. The distribution of sneaker brand is not the same for each religion. Sneaker brand and religious affiliation are independent. The distribution of sneaker brand is the same for each religion. H1: Sneaker brand and religious affiliation are independent. The distribution of sneaker brand is the same for each religion. The distribution of sneaker brand is not the same for each religion. O Sneaker brand and religious…
Winning team data were collected for teams in different sports, with the results given in the accompanying table. Use a 0.05 significance level to test the claim that home/visitor wins are independent of the sport. Given that among the four sports included here, baseball is the only sport in which the home team can modify field dimensions to favor its own players, does it appear that baseball teams are effective in using this advantage? Click the icon to view the data table. Determine the null and alternative hypotheses. Choose the correct answer below. OA. Ho: Basketball games are more likely to win at home than any other sport. H₁: Basketball games are not more likely to win at home than any other sport. OB. Ho: Basketball games are not more likely to win at home than any other sport. H₁: Basketball games are more likely to win at home than any other sport. OC. Ho: The home/visitor win is independent of the sport. H₁: The home/visitor win is not independent of the sport. O D. Ho: The…
A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.01 significance level, test the claim that injuries are independent of helmet color. Color of Helmet Black White Yellow Red Blue Controls (not injured) 494 343 27 168 99 Cases (injured or killed) 210 107 6 71 47
The following table shows ceremonial ranking and type of pottery sherd for a random sample of 434 sherds at an archaeological location. Decorated Jar Sherds (Noncooking) Ceremonial Ranking Cooking Jar Sherds Row Total A 89 46 135 89 56 145 74 80 154 Column Total 252 182 434 n USE SALT Use a chi-square test to determine if ceremonial ranking and pottery type are independent at the 0.05 level of significance. (a) What is the level of significance? State the null and alternate hypotheses. O Họ: Ceremonial ranking and pottery type are not independent. H,: Ceremonial ranking and pottery type are independent. O Ho: Ceremonial ranking and pottery type are independent. H,: Ceremonial ranking and pottery type are independent. O Ho: Ceremonial ranking and pottery type are not independent. H,: Ceremonial ranking and pottery type are not independent. O Ho: Ceremonial ranking and pottery type are independent. H,: Ceremonial ranking and pottery type are not independent. (b) Find the value of the…