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The ability to observe and recall details is important in science. Unfortunately, the power of suggestion can distort memory. A study of recall is conducted as follows: Subjects are shown a film in which a car is moving along a country road. There is no barn in the film. The subjects are then asked a series of questions concerning the film. Half of the subjects are asked: "How fast was the car moving when it passed the barn?" The other half of the subjects are not asked the question. Later, each subject is asked: "Is there a barn in the film?" Of those asked the first question concerning the barn, 17% answer "yes"; only 3% of the others answer "yes." What is the probability that a randomly selected participant in this study claims to have seen the nonexistent barn? Is claiming to see the barn independent of being asked the first question about the barn?
Develop a simulation model for this port. Compute such statistics as the average number of ships in port, the average number of days in port for a ship, and the percentage of idle time for each of the terminals
What sample size would you use if you wanted the 95% margin of error to be 0.15 or less
If the researcher is correct, what is the probability that the proportion of smokers in a sample of 512 males would differ from the population proportion
Enter variables using the stepwise procedure.
However, besides all the similarities of the two methods, the hypothesis test of the difference between two proportions has two advantages.
State the null hypothesis and the alternative hypothesis for a study used to investigate whether or not there is such a relationship.
a pharmaceutical company knows that approximately 5 of its birth-control pills have an ingredient that is below the
suppose we watch the price of the dow jones industrial index for three days.assume there is a 6040 chance that the
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability that the sample mean is Between 74 and 76.
Statistics is science of conducting studies to: Solve a system of equations.
Consider the (4 X 4) covariance (correlation) matrix of Example 3.2. Verify the results of Theorem 3.8. Also verify that latent vectors of P are orthogonal unit vectors.
find confidence interval for the difference between the mean original price per item and the similar mean for customers who purchase something.
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