Quiz 1 You might need: Calculator
A couple decides to keep having children until they have a girl, at which point they will stop having
children. They also agree to having a maximum of three children. The table below shows the probability
distribution of X = the number of children such a couple would have.
X = # of children
1
2.
3
P(X)
0.5
0.25
0.25
Given that pix = 1.75 children, find the standard deviation of the children such a couple would have
Round your answer to two decimal places.

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.