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An investment portfolio has equal proportions invested in five stocks. The expected returns and standard deviations (both in percent per year) are (8, 3), (5, 2), (12, 8), (7, 9), (14, 15).
What are average return and standard deviation for this portfolio?
Compare value of test statistics F obtained in part(2) with value of t 2 , square of test statistic for testing H 0 : β 1 =0 that was needed in test null hypothesis that true slope is 0. Interpret the results of this test.
Perform a linear regression, 8 month moving average & 3 month moving average forecasting technique to see which is most accurate for the new quarter 11 if quarter 11 sales are 172,000 units
Can dependent variables that are categorical be used in linear regression analyis? YES or NO? Please explain!
Let X1,..., Xn be a random sample from a normal population. A particular realization resulted in a sample mean of 20 with the sample standard deviation 4. Construct a 95% con?dence interval for μ when:
a sample of size 30 has sample mean 20.4 and sample standard deviation 2.1. what is the lower end point for a 95
Construct a scatterplot between sales and advertising expenditures - Provide a standard evaluation of the scatterplot.
An outbreak of cyclosporiasis was detected among residents of New Jersey. In a case-control study, investigators found that 21 of 30 case-patients and four of 60 controls had eaten raspberries. Calculate the measures of association.
your company produces two varieties of self-sealing stem bolts standard and deluxe. in one year you can produce 365
An urn always contains 2 balls. Ball colors are red and blue. At each stage a ball is randomly chosen and then replaced by a new ball, which with probability 0.8 is the same color, and with probability 0.2 is the opposite color, as the ball it rep..
Has there been a significant shift upward in the percentage of persons who want to go to Europe? Using the .05 significance level for this study.
Let X denote the data transfer time (ms) in a grid computing system (the time required for data transfer between a "worker" computer and a "master" computer.
David stands on a street corner tossing a coin. He decides he will toss the coin 10 times, each time walking 1 block north if it lands headsup, and 1 block south if it lands tails up. Find the probability that he ends up 10 blocks north of his ori..
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