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Classify the following random variables as discrete or continuous:
X: the number of automobile accidents per year in Virginia.
Y: the length of time to play 18 holes of golf.
M: the amount of milk produced yearly by a particular cow.
N: the number of eggs laid each month by a hen.
P: the number of building permits issued each month in a certain city.
Q: the weight of grain produced per acre.
Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the .05 level of significance.
A standard deviation of 2.5lb. What is the largest annual per capita consumption of ice cream that can be in the bottom 15%?
explain what problems arise in trying to make conclusions based on a survey mailed to the subscribers of a specialty
The average diameter of sand dollars on a certain island is 3.60 centimeters with a standard deviation of 0.90 centimeters. If 36 sand dollars are chosen at random for a collection
On average a certain intersection results in 3 traffic accidents per month. What is the probability that for any given month at this intersection
Determine the minimum sample size required using prior study that found that 54% of respondents said they have high-speed Internet access.
Unexposed women comprising a contro group. at the 0.01 level of significance, was the incidence of cancer greater in the DES users?
You do not need to collect data and actually conduct the test calculations. Rather,state the claim, define the null and alternate hypotheses, identify the test significance and the test statistic, and state the decision rule that will be used.
A machine has three components working independently. The probability that Component A fails is 0.1, the probability that component B fails is 0.2, and the probability that component C fails is 0.3.
Assume that X is normally distributed with a mean of 6 and a standard deviation of 3. Determine the value for x that solves for each of the following.
A simple random sample of 60 voters will be drawn from this population. The chance the sample contains only Republicans and Democrats is?
What is an interaction? Describe an example; what are the variables within your population (work, social, academic, etc.) for which you might expect interactions?
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