Answer only 8.15, do not answer 8.14. If all work is shown, I
will thumbs up.
Let X be an event that a boy is born
X is a binomial random variable where
n = 3, p = 0.5
We know that, probability of binomial distribution is given by
P(X=x) =
, x = 0,1,2,3
(a)
The required probability = P(X = 3) = 0.125
(b)
The required probability = P(X = 0) = 0.125
(c)
The required probability = P(X = 0 or X = 3)
= P(X = 0) + P(X = 3)
= 0.125 + 0.125
= 0.25
(d)
The probability of neither 3 boys or 3 girls is,
= 1- (probability of 3 boys + probability of 3 girls)
= 1 - {P(X = 0) + P(X = 3)}
= 0.75
Answer only 8.15, do not answer 8.14. If all work is shown, I will thumbs up....
Assume that the probability of a boy being born is the same as the probability of a girl being born.(a) Find the probability that for family with four children, the two oldest children are girls.(b) Find the probability that for family with four children, exactly two of the children are boys.(c) Find the probability that for family with four children, at least two of the children are boys.
Please read the following prompt carefully: "About 48% of all births result in a girl. Suppose a couple is planning to have three children." Determine the following values by rounding to the nearest indicated decimal place. Please type your solution in the text entry boxes provided. a. What is the probability of the first- born child being a boy? (Use the form X.XX) b. What is the probability of the first- born child being a girl? (Use the form X.XX)...
Assume that the probability of a boy being born is the same as the probability of a girl being born. Find the probability that a family with three children will have the given composition.The two oldest children are girls.
Please read the following prompt carefully: "About 48% of all births result in a girl. Suppose a couple is planning to have three children." Determine the following values by rounding to the nearest indicated decimal place. Please type your solution in the text entry boxes provided. e. What is the probability of the third-born child being a boy? (Use the form X.XX) f. What is the probability of the third-born child being a girl? (Use the form X.XX) g. What...
Please read the following prompt carefully: "About 48% of all births result in a girl. Suppose a couple is planning to have three children." Determine the following values by rounding to the nearest indicated decimal place. Please type your solution in the text entry boxes provided. a. What is the probability of the first-born child being a boy? (Use the form X.XX) b. What is the probability of the first-born child being a girl? (Use the form X.XX) c. What...
Please show ALL your work. Will give thumbs up for proper
answers!
8. Consider a population of n couples where a boy is born to the ith couple with probability p; and c, is the expected number of children born to this couple. Assume p, is constant with time for all couples and that sexcs of successive children born to a particular couple are independent r.v's. Further, assume that no multiple births are allowed. The sex ratio is defined to...
Among 450 randomly selected drivers in the 20-24 age bracket, 9 were in a car crash in the last year. If a driver in that age bracket is randomly selected, what is the approximate probability that he or she will be in a car crash during the next year? Is it unlikely for a driver in that age bracket to be involved in a car crash during a year? Is the resulting value high enough to be of concern to...
would love help with these! and with checking the answer i
have already
Please read the following prompt carefully: "About 48% of all births result in a girl. Suppose a couple is planning to have three children." Determine the following values by rounding to the nearest indicated decimal place. Please type your solution in the text entry boxes provided. m. What is the probability of having at least two boys? 0.27 (Use the form X.XX) n. What is the probability...
In an experiment, college students were given either four quarters or a $1 bill and they could either keep the money or spend it on gum. The results are summarized in the table. Complete parts (a) through (c) below. Purchased Gum Kept the Money Students Given Four Quarters 26 18 Students Given a $1 Bill 14 28 a. Find the probability of randomly selecting a student who spent the money, given that the student was given four quarters. The probability...
Need help doing number 2, I thought it was a Discrete
Uniform Distribution but I'm having second thoughts.
(c) 0.5976 d) 0.7316 (ey 0.9862 94646 None of the above 2. A married couple decides that they will continue to have children until they have 4 boys. It is assumed that having a boy or a girl is equally likely. How many children does this couple expect to have until they have 4 boys? (a) 4 (c) 8.5 (d) 9 (e)...