SAT, 09.12.2021 03:40 lindsaynielsen13
Let x be a random variable whose values are the number of dots that appear on the uppermost face when a fair die is rolled. The possible values of x are 1, 2, 3, 4, 5, and 6. The mean of x is 7/2 and the variance of x is 35/12. Let y be a random variable whose value is the difference (first minus second) between the number of dots that appear on the uppermost face for the first and second rolls of a fair die that is rolled twice. What is the standard deviation of y?.
Answers: 1
SAT, 25.06.2019 22:00
The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.
Answers: 1
SAT, 27.06.2019 19:00
According to the article, which five aspects of mindfulness did researchers study?
Answers: 1
SAT, 28.06.2019 06:30
What are the two main ideas of this passage? museum experts feel that museums must change to attract visitors. museum experts care more about the number of visitors than about history. museums that display artworks and exhibits do not make families welcome. museums like colonial williamsburg make learning about the past fun. museums in the united states are different than in other countries.
Answers: 2
Let x be a random variable whose values are the number of dots that appear on the uppermost face whe...
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