# Statistics for Busuiness

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### Question Description

1. The random variable x represents the number of boys in a family of three children. Assuming that boys and girls are equally likely
1. Identify the sample space of the probability experiment (use B for boy and G for girl.)
2. Construct a probability distribution
3. Graph the probability distribution

2. A firm believes the internal rate of return for its proposed investment can best be described by a normal distribution with mean 44% and standard deviation 3%.

1. What is the probability that the internal rate of return for the investment will be between 41% and 47%?
2. What is the probability that the internal rate of return for the investment will be more than 44%?
3. What is the probability that the internal rate of return for the investment will be less than 35%? Use the Excel templet for this part.
4. What is the probability that the internal rate of return for the investment will be more than 35%? Use the Excel templet for this part.

** The assignment is to be worked using the Excel spread sheet given in the attachment.

Normal Probabilities Common Data Mean SD 44 3 Probability for X <= X Value Z Value P(X<=35) Probability for X > X Value Z Value P(X>35)

wambuiguama
School: Purdue University

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Anonymous
Tutor went the extra mile to help me with this essay. Citations were a bit shaky but I appreciated how well he handled APA styles and how ok he was to change them even though I didnt specify. Got a B+ which is believable and acceptable.

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