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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.
Identify a decision process within your work or business interests that could be resolved based on data.
Using the 0.05 level of significance, is there evidence that the population mean is above $170?
Determine the dependent variable(s)? Determine the value of the statistic? Write down the name of one variable not mentioned in this study that one might wish to control for.
An entrepreneur is considering the purchase of a coin-operated laundry. The present owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.
Assuming that the first digit cannot be a zero, compute the number of possible outcomes when the digits can be repeated.
Temperature is used to measure the output of a production process. When the process is in control , the mean of the process is 128.5 and the standard deviation is 0.4
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In a normal distribution of 1,000 aptitude test scores, with a mean of 60 and a standard deviation of 8, how many scores fall:
The average expenditure on Valentine's Day was expected to be $100.89 (USA Today,| February 13, 2006). Do male and female consumers differ in the amounts they spend?
If a randomly selected student is a female student, what is the probability she is a C student?
The Kruskal-Wallis rank test is a nonparametric replacement - The Wilcoxon rank sum test tests a null hypothesis
Construct a bar and pie chart to graphically display these data by using Microsoft excel.
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