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Let x denote the amount of time for which a book on 2-hour reserve at a college library is checked out by a student, and suppose that x has density function f(x)=0.5x for 0
a) P(X =< 1.5)(Give decimal answer to two places past decimal.)
b) P(1 =< X =< 1.5)(Give decimal answer to two places past decimal.)
c) P(X > 1.2)(Give decimal answer to two places past decimal.)
d) Find the median time the book is checked out. (Give decimal answer to two places past the decimal.)
e) Find the mean time the book is checked out. (Give decimal answer to two places past the decimal.)
In a sample of 200 women, 144 of them said they were in debt. Test the claim that women are in deeper debt than men, at a=0.01.
They were planted in four different locations, so we will consider the field as a second factor because different soil and moisture types can also have an effect on yield. The interaction plot below was obtained.
The production manager for Beer etc. produces 2 kinds of beer: light and dark.
It is estimated that the competitor will submit a bid for the contract with probability 0.40. What is the probability of getting the deal?
A record executive is interested in the popularity of her label's newest band, The Standard Deviations. She asks 10 people how many Standard Deviations songs they know.
In a survey of the 3000 boy scouts in the National Capital Area Council (NCAC), it is found that they have a mean weight of 135 lbs with a standard deviation of 15 lbs. How many of the boy scouts have weights between 120 lbs and 150 lbs.?
an index of two store items for 2007 based on 2004 is to be constructed. the information for the prices and quantities
Do you reject or fail to reject the null hypothesis? What is the effect size? assuming a=0.05, state your hypothesis for a one tailed test, the critical test statistic, your conclusion?
BRIEF DESCRIPTION OF THE R CODES NEEDED TO IMPLETEMENT THE METHOD:1- bootstrap 2-cross-validation 3-subset selection methods 4-ridge regression
Second treatment had M = 52 with s^2 = 36. Do these data point to significant difference between two treatments? Use the two-tailed test with α = .05.
the accompanying diagram depicts a five step worker-paced headphone manufacturing plant. the headphones are meant to be
The weights (in grams) of four different colors of M&M candies are given below, along with the mean weight and variance of each color, and the variance of the sample means.
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