Find P(A|B). a. 16/144 b. 2/4 c. 2/144 d. 4/16 23. A correlation coefficient of 0.1 indicates that a scatterplot of the data follows: a. a strong, positive linear pattern b. a weak, negative linear pattern c. no pattern d. a weak, positive linear pattern 24. Choose the correct interpretation for the 95% confidence interval estimate of the true population mean IQ score among adult Americans: (70, 130) a. We are 95% confident that a randomly selected adult American has an IQ score between 70 and 130. b. We have a 95% chance to capture the true population mean IQ score among adult Americans in between 70 and 130. c. We are 95% confident that the true population mean IQ score among adult Americans is between 70 and 130. d. The probability that a randomly selected adult American has an IQ score between 70 and 130 is 95%.
20. Find P(A|B).
a. 16/144
b. 2/4
c. 2/144
d. 4/16
23. A
a. a strong, positive linear pattern
b. a weak, negative linear pattern
c. no pattern
d. a weak, positive linear pattern
24. Choose the correct interpretation for the 95% confidence
population
a. We are 95% confident that a randomly selected adult American has an IQ score
between 70 and 130.
b. We have a 95% chance to capture the true population mean IQ score among adult
Americans in between 70 and 130.
c. We are 95% confident that the true population mean IQ score among adult Americans is
between 70 and 130.
d. The probability that a randomly selected adult American has an IQ score between 70
and 130 is 95%.
Possible outcomes 12 for each dice, so for both dice, total outcomes = 12*12=144
for B , favorable outcomes on each dice (any one of 9,10,11,12),
so for both dice, total outcomes for B = 4*4=16
for A and B , favorable outcomes on each dice (any one of 10,12),
so for both dice, total outcomes for A and B = 2*2=4
therefore, P(A|B) = P(A and B)/P(B) = (4/144) / (16/144) = 4/16
correct option:
A correlation coefficient of 0.1 indicates:
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