The table below shows the observed counts in black (first number), expected counts in green (second number), and contribution to
the chi-square statistic in blue (third number). Heart disease No Heart disease Total Anger score Low Anger 53 69.7 4.014 3057 3040.3 0.092 3110 Moderate High Anger Anger 110 106.1 0.145 4621 4624.9 27 4731 14.2 11.557 606 0.0033 0.265 618.8 8284 633 Total 190 O Yes, because the sample size is greater than 30. 8474 Are the conditions met to conduct a chi-square test of association? Yes, because the expected cell counts are greater than 5. O Yes, because there are no extreme outliers in the data. O Yes, because the observed cell counts are greater than 5.
1 answer:
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Answer:
(a)
(b)
-1
(c)
30
Step-by-step explanation:
(a)
Your random variable will have two possible values, 30 and 0, one of them with a probability of 0.45 and the other one with a probability of 0.55. Therefore it looks like this.
(b)
The expected value of this PMF would be
therefore on average you will have a dollar less.
(c)
For this one, if you play 20 times and your initial amount is 50$ then you have to compute the following expectation.