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Identify each variable (i.e., Sex, Smoke and GPA) in the subset whether it is categorical nominal, categorical ordinal, quantitative discrete or quantitative continuous.
A statistical analysis of 1000 long distance telephone calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed with u=240 seconds and sigma = 40 seconds.
Determine the percentage of samples of size 16 that will have mean amounts of coffee within 0.1 ounce of the population mean of 8.2 ounces.
worldwide it is understood that iq scores follow a normal distribution. it is assumed that the middle 95 of the
a simple random sample of size n 1000 is obtained from a popultion whose sie is n 1000000 and whose population
A box contains 10 disks of radii 1, Z ..., 10, respectively. What is the expected value of the circumference of a disk selected at random from this box?
Suppose you take the average of a large data set and then obtain a sample by throwing away all but 10%, would you expect the sample average
a) Draw a scatter diagram. b) Does the relationship look linear?
The lifetime of a certain brand of light bulb is normally distributed, with a mean of 7500 hours and a standard deviation of 700 hours.
Google is constantly running tests to evaluate new search algorithms. For example, Google might test three algorithms using a sample of 10,000 google.com search queries.
Suppose the true mean diameter of the table tennis balls is 40 mm. What is the probability that the entire shipment will be sent back to the manufacturer?
Suppose you want to estimate the proportion of students at your college who are left-handed. You decide to collect a random sample of 200 students.
Why do you think it is called the language of science? What does it mean to be statistically literate? Why is it important to be statistically literate?
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