Homework Answers
Sol:
Expected counts are(50:50)=50*1/2=25 and 25
25
25
observed counts
18
32
ANSWER:
chi sq=3.92
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A penny was spun on a hard, flat surface 50 times, tanding on 18 heads and...
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In September 2003, Lena spun a penny 89 times and observed 2
Heads.
Let p denote the true probability that one spin of her penny
will result
in Heads.
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In September 2003, Lena spun a penny 89 times and observed 2
Heads.
Let p denote the true probability that one spin of her penny
will result
in Heads.
In September 2003, Lena spun a penny 89 times and observed 2 Heads Let p denote the true probability that one in Heads spin of her penny will result (a) The significance probability for testing Ho : p 2 0.3 versus p 0.3 is p P(Y <2), where Y~ Binomial (89;...
C Spinning a coin, unlike tossing it, may not give heads and tails equal probabilities. I spun a penny 150 times and got 67 heads. We wish to find how significant is this evidence against equal probabilities, a. What is the sample proportion of heads? Round to 3 decimal places. b. Heads do not make up half of the sample. Is this sample evidence that the probabilities of heads and tails are different? Take p to be the probability of...
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