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Question 1: If an unbiased coin is flipped 3 times, what is the probability of getting exactly two heads?
Question 2: What is the probability of selecting two aces (without replacement) from a well-shuffled deck of cards?
Question 3: Assuming the population of all statistics students that have taken this class had mean total points at the end of the class of 300 with a standard deviation of 30.
a. What is the percentile rank for someone who got 350 points?
b. What percentage of students had between 275 and 375 points?
Use analysis of variance to test any differences in mean glue strengths.
Show all work. What is the probability that a randomly selected US resident did not live in Idaho? The total 2008 US population was 303,824,640.
Find the product of the vector of state probabilities for the preceding period and the matrix of transition probabilities.
A month is classified as extremely wet if the amount of rainfall is in the upper 10% for that month. How much precipitation must fall before a month of April is classified as extremely wet?
In a bumper test, three types of autos were deliberately crashed into a barrier at 5mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Are mean crash damages the sa..
A confidence interval with a 95% confidence level for the proportion of voters who are in favor of the proposition in a referendum is (0.71, 0.77). How many persons were surveyed in this poll?
What is an index number as relates to time series analysis? In a regression of a time series that states data as a function of calendar year, what requirement of regression is violated?
At the time she was hired as a server at the Grumney Family restaurant, Beth Brigden was told, "You can average more than $20 a day in tips.
a gummball machine has just been filled with 50 black 150 white 100 red and 100 yellow gum balls that have been
In a lengthy manuscript, it is found that only 2/3 of the pages contain no typing errors. Assume that the number of errors per page has a Poisson distribution.
A population consists of 15 items, 10 of which are acceptable. In a sample of 4 items, what is the probability that exactly 3 are acceptable? Assume the samples are drawn without replacement.
One of the intervals of interest is the interval 60 to 80. Based on the given information, what is the relative frequency for the interval 60 to 80 in this particular class?
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