As you might remember, on the first exam I asked everybody the same question four times. The point was to allow students to hedge their answers if they were unsure. I wanted to test if the increase in points by doing this was statistically significant. I got a test statistic of z = 1.68 (one tail test). What is my p-value, and can I claim that students did better when I allowed for hedging (aka, can I reject the null hypothesis that students did no better)? Use alpha = .05. A) .0456; you cannot make this claim   B) .907; you cannot make this claim   C) .046; you can make this claim   D) .907; you can make this claim

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As you might remember, on the first exam I asked everybody the same question four times. The point was to allow students to hedge their answers if they were unsure. I wanted to test if the increase in points by doing this was statistically significant. I got a test statistic of z = 1.68 (one tail test). What is my p-value, and can I claim that students did better when I allowed for hedging (aka, can I reject the null hypothesis that students did no better)? Use alpha = .05.

A) .0456; you cannot make this claim
 
B) .907; you cannot make this claim
 
C) .046; you can make this claim
 
D) .907; you can make this claim
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