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The Wall Street Journal reported that a travel study conducted in 2011 found that 28% of baby boomers (those born between 1946 and 1964) took a cruise vacation within the last three years. A random sample of 100 baby boomers was selected. What is the probability that 32 or fewer of these individuals took a cruise within the last three years?
The random variables X and Y each take values -1 and 1, and p(X=1)=a, P(Y=1)=b. Suppose Z=XY and that X, Y and Z are pairwise independent. What are the values of a and b? are {X,Y,Z} independent?
Research and briefly describe a real world example about how acid rain affects plants. Be sure to demonstrate how pH contributes to the outcome
If the manufacturer guarantees the tread life of the tires for the first 53,520 miles, what proportion of the tires will need to be replaced under warranty?
the weight of a sophisticated running shoe is normally distributed with a mean of 12 ounces and a standard deviation of
At the 0.05 level of significance, is there evidence that the mean amount in the bottles is different from 2.0 liters? Compute the ¬p-value and interpret its meaning.
Why is it important to plan for stakeholder engagement? Why is some of the information sensitive when planning how to work with stakeholders?
Directions: After you complete the readings, complete this assignment. Answer the questions with a minimum of one paragraph per question, using complete sentences. List all references that you use.
A typical opinion poll surveys about 1000 adults. Suppose the sampling frame contains 100 million adults, including yourself, and that an SRS of 1000 adults.
Referring to the previous question, consider the distribution of all sample proportions p^ when the sample size is 342.
The "average" (mean) tire wore out at 41,000 miles, and the standard deviation was 4000 miles. Approximately what percent of the tires are likely to wear out before 40,200 miles?
a population has a variance of 34.a what is the standard deviation of this population ? 2 decimal places.b what would
M&M Milk Chocolate candies colors are not all the same proportion. Blue consist of 24% of the bag pieces while Brown & Red only 13% each. The following was found:
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