Suppose that a hat contains slips of papers containing the numbers 1, 2 and 3. Two slips of paper are drawn, as in a) and b). Estimate the expected value and standard deviation of the product of the numbers on the slips of paper. a) Two slips of paper are drawn with replacement.

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Question 1
Suppose that a hat contains slips of papers containing the numbers 1, 2 and 3. Two slips of paper are drawn,
as in a) and b). Estimate the expected value and standard deviation of the product of the numbers on the
slips of paper.
a) Two slips of paper are drawn with replacement.
Answer:
в «- 1000
x <- replicate (B,
prod (sample(c(1,2,3), 2, replace
TRUE))
head (x)
## [1] 4 6 3 3 2 3
mean (x)
## [1] 4.076
sd(x)
## [1] 2.483222
b) Two slips of paper are drawn without replacement.
Answer:
в «- 1000
x <- replicate (B,
prod (sample (c(1,2,3), 2, replace = FALSE))
head (x)
## [1] 3 6 6 6 3 2
mean (x)
## [1] 3.655
Transcribed Image Text:Question 1 Suppose that a hat contains slips of papers containing the numbers 1, 2 and 3. Two slips of paper are drawn, as in a) and b). Estimate the expected value and standard deviation of the product of the numbers on the slips of paper. a) Two slips of paper are drawn with replacement. Answer: в «- 1000 x <- replicate (B, prod (sample(c(1,2,3), 2, replace TRUE)) head (x) ## [1] 4 6 3 3 2 3 mean (x) ## [1] 4.076 sd(x) ## [1] 2.483222 b) Two slips of paper are drawn without replacement. Answer: в «- 1000 x <- replicate (B, prod (sample (c(1,2,3), 2, replace = FALSE)) head (x) ## [1] 3 6 6 6 3 2 mean (x) ## [1] 3.655
sd (x)
## [1] 1.689624
c) Why is the expected value and standard deviation smaller when sampling without replacement?
Transcribed Image Text:sd (x) ## [1] 1.689624 c) Why is the expected value and standard deviation smaller when sampling without replacement?
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