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Use the normal distribution to approximate the desired probability.
A coin is tossed 20 times. A person, who claims to have extrasensory perception, is asked to predict the outcome of each flip in advance. She predicts correctly on 14 tosses. What is the probability of being correct 14 or more times by guessing? Does this probability seem to verify her claim?
Thrills. People who responded to a July 2004 Discovery Channel poll named the 10 best roller coasters in the United States. The table below shows the length.
What is the formula used to find percent change in sales? For example, Sales 2013 was $28,106, sales in 2014 decreased to $27,441
Horne, Reyner, and Barrett (2003) describe a study in which 12 men took a simulated driving test after drinking alcohol at lunch, getting too little sleep.
our bodies have a natural electrical field that is known to help wounds heal. does changing the field strength slow
Three colors have been proposed for a product: blue, green, yellow. The null hypothesis for a goodness-of-fit test would be.
How many five-card hands chosen from a standard deck of playing cards consist of five cards in a row.
Was nineteenth-century globalization merely an extension of European imperial and industrial expansion, or did it reflect unique developments within other societies globally? Use secondary sources and at least FIVE (5) primary documents.
The average hourly wage of employees of a certain company is $9.83. Assume the variable is normally distributed.
Explain what it means when two variables have a negative association. What is an example of two variables that would have no association?
Health care reform was one of the major platforms of the Clinton campaign in 1992 and one of the top priorities of his new administration in 1993.
In a group of six professors selected at random, what is the expected number of extroverts? What is the standard deviation of the distribution?
A car dealership has 8 red, 13 silver and 5 black cars on the lot. Ten cars are chosen randomly to be displayed in front of the dealership. Find the probability that 4 cars are red and the rest are silver.
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