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The probabilities of the weather being fine, raining, or snowing are respectively 1/2, 1/3, and 1/6. The probabilities that a student arrives on time for school under each of these conditions is 3/4, 2/5, and 3/10 respectively. What is the probability that:
a. the student arrives at school on time on any given day;
b. if the student is late, it was raining?
homers pizza which predominantly delivers within the certain distance has just changed its delivery process in an
21st Century Insurance Company claims that telephone calls for policy holder information are answered in at most 3 minutes. A random survey of 36 phone calls results in the mean 3.3311 and standard deviation 2.1788.
A local fast-food restaurant has determined that 10% of drive-thru orders are filled incorrectly. Suppose 5 orders are randomly selected. What is the probability that more than one of the orders is filled incorrectly?
50 33 and 48 students are selected from the sophomore junior and senior classes with 496 348 and 481 students
Two hundred raffle tickets are sold. Your friend has 5 people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?
question 1a soft drink manufacturer is using a winning cap as a sales promotion. the purchaser can get a prize if they
A 2005 study found that 202 women held board seats out of a total of 1,195 seats in the Fortune 100 companies. A 2003 study found that 779 women held board seats out of a total of 5,727 seats in the Fortune 500 companies.
Find the probability that the system is operational during the time period and what is the probability that component E3 had been operational?
A company produces calculators in batches of 64. Four out of every 100 calculators are defective. State the random variable for this situation and list its values.
The MIT team will receive 2 points for a win, 1 for a tie. and 0 for a loss. Find the PMF of the number of points that the team earns over the weekend.
If the correlation coefficient expresses the degree of a linear relationship, why is it appropriate to use the same formula with nonlinear relationships?
Construct and interpret a 95% confidence interval for the mean score on this exam question. Follow the Inference Toolbox.
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