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Human blood is grouped into four types: A, B, AB and O. The percent's of people in Suva with each type are as follows: 0, 43%; A, 40%; B, 12%; and AB. 5%. At a recent blood drive at USP Laucala campus, the donors were classified as shown below. At a = 0.05, is there sufficient evidence to conclude that the proportions differ from those stated above? A АВ 60 65 15 10

Human blood is grouped into four types: A, B, AB and O. The percent's of people in Suva with each type are as follows: 0, 43%; A, 40%; B, 12%; and AB. 5%. At a recent blood drive at USP Laucala campus, the donors were classified as shown below. At a = 0.05, is there sufficient evidence to conclude that the proportions differ from those stated above? A АВ 60 65 15 10

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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1. Human blood is grouped into four types: A, B, AB and O. The percent's of people in Suva with each type are as follows: 0, 43%; A, 40%; B, 12%; and AB. 5%. At a recent blood drive at USP Laucala campus, the donors were classified as shown below. At a = 0.05, is there sufficient evidence to conclude that the proportions differ from those stated above? A В АВ 60 65 15 10 2. A researcher wishes to see if the five ways (drinking decaffeinated beverages, taking nap, going for a walk, eating a sugary snack, other) people use to combat midday drowsiness are equally distributed among office workers. A sample of 60 office workers is selected, and the following data are obtained. At = 0.10 can it be concluded that there is no preference? Method Beverage Nap Walk Snack Other Number 21 16 10 8 3. A survey at the Hibiscus Festival shows this selection of snacks purchased. At a = 0.05 , is the snacks chosen independent of the gender of the customer? Snack Gender Hot Dog Ice Cream Popcorn Male 12 21 19 Female 13 8 25 4. To test the effectiveness of a new drug, a researcher gives one group of individuals the new drug and another group a placebo. The results of the study are shown here. At a = 0.01 , can the researcher conclude that the drug is effective? Medication Effective Defective Drug Placebo 32 9 12 18
Transcribed Image Text:1. Human blood is grouped into four types: A, B, AB and O. The percent's of people in Suva with each type are as follows: 0, 43%; A, 40%; B, 12%; and AB. 5%. At a recent blood drive at USP Laucala campus, the donors were classified as shown below. At a = 0.05, is there sufficient evidence to conclude that the proportions differ from those stated above? A В АВ 60 65 15 10 2. A researcher wishes to see if the five ways (drinking decaffeinated beverages, taking nap, going for a walk, eating a sugary snack, other) people use to combat midday drowsiness are equally distributed among office workers. A sample of 60 office workers is selected, and the following data are obtained. At = 0.10 can it be concluded that there is no preference? Method Beverage Nap Walk Snack Other Number 21 16 10 8 3. A survey at the Hibiscus Festival shows this selection of snacks purchased. At a = 0.05 , is the snacks chosen independent of the gender of the customer? Snack Gender Hot Dog Ice Cream Popcorn Male 12 21 19 Female 13 8 25 4. To test the effectiveness of a new drug, a researcher gives one group of individuals the new drug and another group a placebo. The results of the study are shown here. At a = 0.01 , can the researcher conclude that the drug is effective? Medication Effective Defective Drug Placebo 32 9 12 18
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