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The 10 year survival rate for bladder cancer is approximately 50%. If 20 people who have bladder cancer are properly treated for the disease,what is the probability that:
A. At least 10 will survive for 10 years
B. At least 15 will survive for 10 years
You wish to do a community needs assessment survey of a community to find out how much office space is needed by professionals in the community.
Suppose we wish to conduct a survey of adult US voters about whether or not they intend to vote for an incumbent in congress in the next election. Suppose that we survey 1000 people and 230 say they will.
Find the probability that fewer than 5 are satisfied with the airlines. (c)Find the probability that 8 or more are satisfied with the airlines.
1. What do discrete random variables describe? 2. Explain joint probability. 3. Explain conditional probability.
List 1 profession example for each probability type: empirical probability and theoretical (classical) probability. Explain clearly how these probabilities are used.
The remainder are defective. If 4 of the products are randomly selected, find the probability that all of them are acceptable.
Assume that two samples are independent simple random samples selected from normally distributed populations. Use a 0.05 significance level to test the claim that male and female biology students speak the same mean number of words in a day.
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
A simple random sample of 1000 Americans found that 61% were satisfied with the service provided by the dealer from which they bought their car.
Discuss a hospitals total maintenance costs, and use regression analysis to estimate the fixed cost element of maintenance and the variable cost associated with the number of patient-days.
A teacher figure that final grades in the statistics department are distributed as A,25%, B, 25%, C, 40%, D, 5%, F, 5%. At the end of the randomly selected semester, the following number grades were recorded.
What is the probability that the person guessing the numbers guesses it incorrectly between 8 and 20 times out of the 34 times the game is played?
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