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A sample of five full service gasoline stations was taken and the price per gallon (to the nearest cent) was recorded. The prices recorded were $1.36, $1.37, $1.38, $1.39, and $1.40. What is the range, mean price, and the standard deviation of the gasoline?
What is the expected number of students who have registered on a pass/fail basis? What is the probability that more than three are registered on a pass/fail basis?
Ms. Tina Stevens just purchased a new dress that cost $120. What is the probability she paid cash or check? (Round your answer to 3 decimal places.)
Were the chi-square and regression tests presented and used correctly? Could the authors' analysis be recreated?
A study of 25 graduates of four-year colleges by the American Banker's Association revealed the mean amount owed by a student in student loans was $14,381.
In 1992, FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive.
Describe a scenario related to the final project in which you would use repeated-measures ANOVA. Describe a scenario related to the final project in which you would use MANOVA.
Find the probability of a type I error α if the true proportion is p=0.6.
Findout the normal model for the given proportions. The professor has every student toss a coin 50 times also calculated the proportion
Election officials take a random sample of 100 signatures and thoroughly investigate them to find that 84% are valid. Is this statistically significant evidence that the candidate has enough valid signatures overall? Explain.
At a certain university, 28% of the students major in zoology. Of all the students majoring in zoology, 68% are males. It is also known that 56% of all students at the university are male. Let Z represent the event that a randomly chosen student i..
A vending machine that dispenses coffee into cups must fill the cups with 7.8oz of liquid. Before selling the vending machine to a college or business, the company tests the machine to be sure it is dispensing an average amount of 7.8oz of coffee.
Each inspector makes his or her inspection at a different time. What is the probability that at least one inspector will find a defective widget?
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