Probability mass function of the number
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In a study to determine the success rate of premed students at UTA it was found that 40% of premed students ultimately become physicians. This study was conducted with a sample size of 420 individuals. Calculate a 95% confidence interval for the p
In the laboratory for another class, you and your lab partner are told to calculate a 95% confidence interval for the mean. After doing this your partner says: "The true mean is a random number, and there's a 95% chance that it falls in our interv
If a sample of 20 plants is taken, what is the probability that the sample mean height is between 140 and 150 cm? If we sample 15 individuals, what is the probability of the sample mean being > 110 cm?
The probability of a successful optical alignment in the assembly of an optical data storage product is p = 0.6. Assume the trials are independent. Round your answers to four decimal places (e.g. 98.7654).
A player of a video game is confronted with a series of opponents and has an 83% probability of defeating each one. Success with any opponent is independent of previous encounters. The player continues to contest opponents until defeated. What is
Approximately 22% of 1000 fish in a pond are infected with a skin disease. A random sample of 20 fish is selected. The mean of the sampling distribution for the proportion of your sample that is infected are:
A network provider investigates the load of its network. The number of concurrent users is recorded at fifty locations (thousands of people),
Sports fans tune to a local sports talk radio station according to a Poisson process with the rate of three fans every two minutes and listen it for an Exponential amount of time with the average of 20 minutes.
Consider the Weibull distribution with shape parameter equal to 2.5 and shape (rate) parameter equal to 0.05 What is the probability of exceeding 25 for this distribution?
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