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Two fair dice are rolled and the sum of the points is noted. Find the probability that the sum is 6 given that at least one of the numbers is less than 3.
How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis?
The average cost for service provided per person per day is random variable with normal distribution of N$ 100 and a standard deviation of N$ 22. What is the probability that the cost will be at least N$ 127 per day per person.
M°ans waits for the bus. The waiting time, T , until a bus comes is U (0, a)- distributed. While he waits he tries to get a ride from cars that pass by according to a Poisson process with intensity λ. The probability of a passing car ..
Determine the probability that each of the eight members serves on at least one of the three committees,
The local police force gives all applicants an entrance exam and accepts only those applicants who score in the top 15% on this test.
You want to estimate the average age of your store's customers.- You ask an SRS of customers their opinions on each of two new floor plans for your store.
12 accounting records were randomly selected from a large accounts receivable portfolio. 30% of the records in the portfolio are managed by Susan.
First- and second-place trophies are awarded to the two persons receiving the highest and second-highest number of votes. In how many different ways can the trophies be awarded?
What are the upper and lower bounds for the 90% confidence interval for ? (4 decimals)?
in the following data set what percent of observations fall within one standard deviation of the mean?75 76 77 77 77 78
Sampling variability refers to the idea that different samples will include different individuals
the rates of on-time flights for commercial jets are continuously tracked by the u.s. department of transportation.
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