The following distribution is for two populations (A and B) that have normal distributions for cholesterol. with known standard deviations and based on sample size 20. The shaded area in the given distribution is 0.475. If a sample (n=20) was taken from each population what is the probability that sample A is at least 9 units higher than that of sample B.

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The following distribution is for two populations (A and B) that have normal distributions for
cholesterol. with known standard deviations and based on sample size 20. The shaded area in
the given distribution is 0.475. If a sample (n=20) was taken from each population what is the
probability that sample A is at least 9 units higher than that of sample B.
0.475
11
XA-XB
O 0.4269
O 0.3123
O 0.975
O 0.6923
O 0.1693
O 0.0912
O 0.2514
Transcribed Image Text:The following distribution is for two populations (A and B) that have normal distributions for cholesterol. with known standard deviations and based on sample size 20. The shaded area in the given distribution is 0.475. If a sample (n=20) was taken from each population what is the probability that sample A is at least 9 units higher than that of sample B. 0.475 11 XA-XB O 0.4269 O 0.3123 O 0.975 O 0.6923 O 0.1693 O 0.0912 O 0.2514
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