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A company recieves an average of .64 purchase orders per minute. Assuming a possion distribution for the number of purchases orders per minutes, what is the standard deviation for this distribution?
Statistics and Probability, Statistics
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A production system has two spares of a critical component that have average uptime 1/lamba = 1 month. Find the probability that the 3 components (the operating one and the two spares) will last more than 6 months. Assum ...
The P-value for a two-sided test of the null hypothesis H0: μ = 50 is 0.035. Does the 95% confidence interval include the value 50? Why? Does the 99% confidence interval include the value 50? Why?
1. Out-of-state tuition and fees at the top graduate schools of business can be very expensive, but the starting salary and bonus paid to graduates from many of these schools can be substantial. The following data show t ...
According to a Pew Research Center poll, 22% of adult Americans have contributed to an online fundraising project. A random sample of 100 adults is selected. Let the random variable X be the number of adult Americans who ...
Given a normally distributed random variable, X, with mean (μ) and standard deviation (σ) shown on the right, calculate P(a μ =15 s = 2 a =16 b =20 Given a normally distributed random variable, X, with mean (μ) and stand ...
A bond that makes payments in a certain currency contains the risk of holding that currency and so is priced according to the yields of similar bonds in that currency.
What is the annual coupon rate of a 7-year corporate bond given that its current price is $930, par = 1,000, semi-annual coupon, YTM=10%?
A researcher is planning to a silvicultural study using 3 different fertilizers on 3 adjacent plots. How many ways can the 3 plots be arranged if there are 18 fertilizers to choose from?
Question: 1. Decision Theory There are two available diagnostic methods ¬- D1 and D2 - to predict if a tissue sample is benign or malignant. Ninety percent of the samples processed are benign. The performance of the diag ...
Suppose that X1, · · · .Xn are normal with mean µ1; Y1, · · · , Yn are normal with mean µ2, and W1, · · · , Wn are normal with mean µ1 + µ2. Assuming that all 3n random variables are independent with a common variance, f ...
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