1. For each question below indicate True (T) or False (F)
a. The binomial distribution is a possible model for a continuous variable: F
b. In any normal distribution 95% of the probability lies within two standard deviations of the mean: T
c. For a Poisson(m=4) distribution the variance is 2: F
d. For any exponential distribution, the mean is greater than the median: T
e. The Poisson is a good approximation to binomial when n is large and p is small. T
(2+2+2+2+2=10 points)
2. Given that the area under the standard normal curve, to the left of –2.3 is .0107, what is the area
under the normal curve to the right of 2.3?
(show work) DTDP ____0.0107____________
value
(8 points)
3. Suppose you flip a fair coin 7 times, let X be the possible number of heads. Find the following
probabilities (in each case show work below):
(i) P(X = 0) =___(.5)7______________ (ii) P(X = 1) = __7*.5*.56_________
(value) (value)
(iii) Probability of at least 2 heads: Prob. Statement: _P(X >......

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Title: C++
Approximate Word Count: 428
Approximate Pages: 2 (250 words per double-spaced page)

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