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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?
A researcher estimates an AR(1) model with an intercept and finds that the OLS estimate of Beta1 is 0.95, with a standard error of 0.002.
What is the probability that the number of tails is between 87 and 100 inclusive. round the final answer to 4 decimal places.
A popular snack is packed by machine into 9-ounce boxes. The distribution of box weights is normally distributed with a mean of 9 ounces and a variance of 0.01 ounces. What is the probability of randomly selecting a box containing less than 8.9 ou..
A business researcher uses two-way ANOVA in a report for a client. The researcher does not check the assumptions of using the technique.
What is the probability that this teammate has two or fewer years of experience? more than five years of experience? What is the probability that, considering both of Dave's two teammates.
It has been determined empiracally that for a certain egg producer, the number of cracked or broken eggs X, in a randomly slected box containing six eggs, follows approximately the distribution given in the table below:
The normal serum hemocrit level is 0.41 milligrams to 100 milligrams of blood. The level in elderly patients is significantly low at 0.31.
A shipment of 10 items has two defective and eight nondefective items. In the inspection of the shipment, a sample of items will be selected and tested. if a defective item is found the shipment of 10 will be rejected.
What is the probability that a randomly selected tire will have a life of at least 30,000 miles?
What statistical tests can perform to compare two groups asked the same question, when the question has a yes/no answer and the sample groups are different.
1.you decide to test a friend for esp using a standard deck of 52 playing cards. such a deck contains 13 spades 13
What is the probability that the sample mean would differ from the true mean by greater than .04 dollars if a sample of 183 5 gallon pails is randomly selected? Round answer to 4 decimal places.
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