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Consider the study of two insect populations at two experimental stations. At station A, the egg hatch rate (computed from a set of 100 eggs at a time) is known to follow approximately a normal distribution with mean 62% and standard deviation 5%. At station B, the egg hatch rates are known to follow approximately a normal distribution with mean 58% and standard deviation 8%. An entomologist defines a high egg hatch rate as one that is 70% or more. Suppose you select a set of 100 eggs at random in each station. Which of the two sets of eggs is more likely to have a high hatch rate?
for any normal distribution what z-score separates the highest 80 of the scores from the rest of the distribution?
baby talk magazine reported that the mean time a mother spends changing diapers a day is 15.1 minutes. a sample of 12
All the row totals and column totals are given to you, and the numbers you fill in must add to these given totals. How many degrees of freedom do you have?
The owner of Maumee Ford-Mercury wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year.
Use the Chebyshev inequality to determine the smallest number of relation n that must be taken in order to satisfy the following relation:
Is there any evidence to suggest that the proportion of voters who believe pharmaceutical companies invent diseases to make money is different for Democrats and Republicans? Use a = 0.01.
If 100 percent of a days production is inspected whenever the sample of 10 gives 2 or more defectives, then what is the pobability that 100 percent of a days production will be inspected?
if the significance level .10 then what is the probability of rejecting ho when the null hypothesis is
Let G be a directed graph where c_e is the cost of arc e. If the nodes of G can be assigned feasible potentials then G has no negative dicycle.
1. What proportion of the ball bearings manufactured by this process meet the specifications? 2. What is the 99th percentile of the diameter of the ball bearing?
What is regression output and how do you analyze and interpret adjusted R^2; coefficient estimates and their statistical significant?
Conduct a test to determine whether blood lactate level (y) is linearly related to perceived recovery (x). Use alpha = .05. Find the p-value for testing the hypotheses you gave in the previous problem. Show all decimal places in your answer.
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