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The contractor is considering the sale which promises the profit of $24,000 with the probability of .7 or a loss (due to bad weather, strikes, and such) of $8000 with the probability of .3. Determine the expected profit?
what is the probability of selecting a sample mean of 7 or less , with a sample population of 9 and mean of 10 and a standard deviation of 3.
the probability that a household is both prosperous and educated is P (A and B) = 0.082. What is the probability P (A or B) that the household selected is either prosperous or educated.
A sales manager wants to know if the sales productivity of her east region is greater than the sales productivity of her west region
Based on these data, explain whether or not course attendance had any effect on determining of a restaurants violation of health code.
There is thought to be a relationship between a persons' educational attainment and the number of children he or she has. The hypothesis is that as one's educational level increases, he or she has fewer children.
A portfolio p of consisting 60% of stock X and 40% of stock Y, has a correlation ρpM = 0.62 with the market. What is the portfolio volatility? Statement on the diversification effect.
Provide two examples for each source of measurement error and include how each example might likely influence research results.
An elevator has a design capacity of 2,560 pounds and a posted limit of 16 passengers. The weight of adults is approximately normal with a mean of 150 pounds and standard deviation of 20 pounds.
Determine the probability that each of the 30 students will get computer in working condition?
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
Suppose that a quarter is randomly selected, what is the probability that this quarter has high productivity growth and has a large pay increase?
A biased coin with probability of head being .6 is tossed 12 times. What is the probability that number of head would more than 4 but less than or equal to 10.
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