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Let X be the number of tumors in a fish living in a river. Suppose that it has the following probability mass function f(0) = 0.9 f(1) = 0.7 f(2) = 0.02 f(3) = 0.01 A random sample of size n = 30 is selected from this population. Approximate the probability that the mean number of tumours per fish is greater than 0.35
Use Chebyshev's theorem to determine what percent of values will fall between 58 and 82 for data set with mean of 70 and standard deviation of 4.
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
The Aloha Banking Co. is studying ATM use in suburban Honolulu. A sample of 30 ATM's showed they were used the following number of times yesterday.
Estimating confidence interval for mean value of y and find a 95% confidence interval for the expected average total sleep time for a child of age 12
Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.
Write a paragraph summarizing the results of the analysis and determine whether the calculated values of chi-square are statistically significant
Estimate the probability the store will gross over $850 a) Fewer than 5 out of 10 business days.
Create probability tree showing all marginal, conditional, and joint probabilities. Create a joint probability table.
Set up hypotheses to test if distribution of birthdays can be considered coming from uniform distribution.
Which distribution should be used to create 80% confidence interval?
Suppose four heads appeared face up on four tosses of a coin. what is the probability that a head will appear face up in the next toss of the coin?
The Air Transport Association of America published figures on the busiest airports in the United States. The following frequency distribution has been constructed from these figures for the year 2000.
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