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The number of magazine subscriptions per house hold is represented by the following probability distribution.
Magazine subscriptions per house hold - 0, 1,2,3,4Probability - .48, .35, .08, .05, .04
a) Calculate the mean number of Magazine subscriptions per house hold.b) Find the standard deviation
2.A construction company has bid on two contracts. The probability of winning contract A is.3. If the company wins contract A, the probability of winning contract B is .4. If the company loses contract A, the probability winning contract B decrease to .2. Find the probability of the following events.
a) Winning both contractsb) Winning exactly one contractc) Winning at least one contract.
The sample to be 99% sure the sample mean is with 1 semester hour of the population mean for all students at this college?
A random sample of size 25 is taken from a normal population having a mean of 80 and a standard deviation of 5. A second random sample of size 36 is taken from a different normal population having a mean of 75 and a standard deviation of 3.
At the 5% level of significance, can we infer that branch A has a significantly higher proportion of satisfied customers than branch B?
For each of the F statistics given above find the degrees of freedom and an approximate P-value. Summarize the results of these tests.
About 5.5 percentage points in either direction from what would have been obtained by seeking out all Ohio State University female students." Do your results agree with this statement?
Great Plains Roofing and Siding Company inc, sells roofing and siding products to home repair retailers, such as Lowe's and Home Depot, and commercial contractors.
With the exponential function e^x and logarithmic function log x how do I graphically show the effect if x is doubled?
The total profit (in dollars) for sales of x rowing machines is given by P(x) = -0.2x^2 + 300x - 200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum?
Multiple choice questions based on regression - dependent variable Y and an independent variable X is provided.
Perform a chi-square test on the following data:
Determine how self confident a person may be. Analysis and Justification. Prepare an analysis of how you developed your instrument.
Of the 250 students in a blind taste test, 150 (60%) preferred Milwaukee's Best over Natural Light. Then the 90% confidence interval for the student population proportion preferring Milwaukee's Best is:
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