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The relationship (assumed linear) between yield of bourbon Y and aging time X was studied by observing yields Yi from batches that have been allowed to age Xi=2i years, i= 1, 2,..., 6. The results are given below. Find, assuming n=E(Y l X) = B0 + B1X1 the least squares estimates of B0 and B1, and hence the least squares estimates of n. Construct 95% confidence intervals for B0 , B B1, and n0 = B0 + B1x0. Let X0 take the values 2, 4, 6, 8, 10 and 12 and draw the confidence band for the estimated regression equation.
The life span of a battery is normally distributed, with a mean of 2500 hours and a standard deviation of 50 hours. What percent of batteries have a life span that is more than 2590 hours?
calls to a customer service center last on average 2.4 minutes with a standard deviation of 1.5 minutes. an operator in
you are estimating the cost k of optical sensors based on the power output of the sensor. using the preliminary
the route used by a certain motorist in commuting to work contains two intersections with traffic signals. the
How much profit can we gain by selling shoes? Can the magazine and/or th companyy profit by advertising and selling mens shoes?
1. why are z scores most often written with two decimal places?2. what is the z score for a x value one standard
Markups on Supertrex seen at other local stores range from 20% to 45%, Kruger decides that its markup had best be in this range as well. Formulate as an LP Problem.
A purchasing agent for a national chain of seafood restaurants wants to estimate the mean weight of shrimp in a large catch. How many shrimp should be sampled from the catch to be 95% confident that the sample mean will be off from the actual mean we..
1.a study was conducted to explore the relationship between a childs birth order and his or her chances of becoming a
Compute mean and standard deviation for sample of N = 8 females and sample of N = 8 for males.
Find Karl Pearson's correlation coefficient between the sales and expenses from the data given below: Sales (Rs. Lakhs) 50 50 55 60 65 65 65 60 60 50 Expenses (Rs. Lakhs) 11 13 14 16 16 15 15 14 13 13?"
ten randomly selected automobiles were stopped and the tread depth of the right tire was measured. the mean was 0.8 cm
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