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On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day.
X 25 50 75 100 total
P(x) .27 .44 .21 .08 1.00
(a) Find the probability expressions: (Round your answers to 2 decimal places.)
a. P(X = 50) _____
b. P(X ≤ 75) ______
c. P(X > 50) _______
d. P(X < 100) ________
Describe a sampling strategy to randomly select those to be searched.- Here is the first-class passenger list and a set of random digits. Select two passengers to be searched, carefully demonstrating your process.
Suppose I have an experiment with 5 groups and 5 DVs and intend to conduct MANOVA to determine if there are mean differences between groups,
A population has mean 325 and variance 144. Suppose the distribution of sample means is generated by random samples of size 36.
According to a national CNN/USA/Gallup survey of 1,025 adults, conducted March 14-16, 2008, 63% say they have experienced a hardship because of rising gasoline prices. How do you believe the survey was conducted and what types of bias could occur ..
Proportion of out-of-tolerance items is greater than 0.02, the robot will be overhauled. Otherwise it will be allowed to continue operating. What is the probability that a satisfactory robot will be overhauled unnecessarily?
The supplier agrees they will deliver on the day the order is placed. Note that the basic unit of measurement for a period is one year in this case.
The Globe Fishery packs shrimp that weigh more than 1.91 ounces each in packages marked" large" and shrimp that weigh less than 0.47 ounces each into packages marked "small"; the remainder are packed in "medium" size packages.
the weekly salaries of teachers in one state are normally distributed with the mean of 490 and a standard deviation of
You are testing the effects of aspirin and diet on whether a heart attack can be prevented. You randomly choose a sample
A very large group of students takes a test. Each of them is told his or her percentile rank among all students taking the test.
If the monthly demand for videos on average is 180 and standard deviation = 60, what is the number of videos the manager should order to meet 90% customer demand?
a drawer contains 10 red socks 4 blue socks and 8 black socks. suppose you chose two socks at random. find the
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