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A professor in a large statistics class has a grading policy such that only the 15% of the students with the highest scores will receive the grade A. The mean score for this class is 72 with a standard deviation of 6. Assuming that all the grades for this class follow a normal probability distribution, what is the minimum score that a student in this class has to get to receive an A grade?
a roulette wheel has 38 slots 18 of which are black 18 are red and 2 are green. each time the roulette wheel is spun
According to the U.S. Census Bureau, the mean household income in the United States in 2000 was $57,045 and the median household income was $42,148.
The number of UFO (Unidentified Flying Object) sightings per week in Roswell, NM is a random variable with the cumulative distribution function given below.
Find the probability that among 9 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating.
q1 both undergraduates and postgraduates can use the university cafeteria. each diner can choose between buying a meal
A customer receives a defective product. What is the probability that it came from Binford? What assumptions did you make to answer this question?
Critically discuss the reasons for studying statistics? Choose five random numbers between 70-100. Calculate the mean, and midrange of these numbers.
a large group of people is to be checked for two common symptoms of a certain disease. it is thought that 20 of the
i have two questions i need help with. please show me how to obtain the answers. they are in the attachment. thank
At the .05 significance level, can we conclude that more than 60% of the homes have an attached garage? What is the p-value.
if you are using the method of least squares for fitting trends in an annual time series containing 25 consecutive
If the rods' lengths produced by your line are normally distributed, with a mean equal to the target of 0.2 meters, and a standard deviation of 0.015m, what percentage of rods will be scrapped?
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