SOLUTION: An article published in the Washington Post claims that 45 percent of all Americans have brown eyes. A random sample of 𝑛=76 college students found 28 who had brown eyes. Con

Question 1157144: An article published in the Washington Post claims that 45 percent of all Americans have brown eyes. A random sample of 𝑛=76 college students found 28 who had brown eyes.
Consider testing:
𝐻0:𝑝=.45
𝐻𝑎:𝑝≠.45
The test statistic is 𝑧 =
P-value =

Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!


On your TI-84

Press STAT
Use right arrow key to scroll right to TESTS
Press ENTER
Use down arrow key to scroll down to 5:1-PropZTest
Press ENTER

p₀:0.45
x:28
n:76
prop:≠p₀   <--highlight this by scrolling and pressing ENTER
Calculate             <--highlight this by scrolling and pressing ENTER

See this:

prop≠0.45
z=-1.429543225
p=0.1528482517
p̂=0.3684210526
n=76 

Edwin

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