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This is a hypergeometric, geometric, negative binomial random variable, or Poisson.
A smuggler places 3 narcotic tablets in a bottle of 21 vitamin pills for a total of 24 pills. If U.S. customs tests 2 pills at random what is the probability that at least 1 narcotic pill will be found?
The professor gave the answer as 24%, I am just unclear on how to arrive at that.
Simulate both one-and two-teller systems, calculate waiting time, average queue length, and percentage utilization for each system.
Given same values n=20, p=0.6, and x=17, calculate probability of x successes in n independent trails of experiment.
Assume 1.5% of antennas on new Nokia cell phones are imperfect. For random sample of 200 antennas, determine the probability that: None of the antennas is defective.
Determine the mean and the standard deviation of the sample.
A sample of 50 retirees is drawn at random from a normal population whose mean age and standard deviation are 75 and 6 years, respectively.
A marketing research analyst collects data for a random sample of 100 customers out of the 400 who purchased a particular "coupon special".
Suppose the assembly times follow normal distribution. Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
What size sample would be required to estimate the proportion of hospital referrals with a margin of error of 0.04 or less at 95% confidence?
A doctoral student is designing a research study. She is hoping that the results of the study are statistically significant. What type of p-value would she want to obtain? Select one of the following.
Find a 90% confidence interval for the mean decibel level µ for this type of transit vehicle.
Utilize a test of the difference among proportions when answering these questions. Illustrate the research hypothesis.
In a study of 10 graduate students from a nurse education program, the average age of the group was 48.6 years and the standard deviation was 4.1 years. Assume the variable is normally distributed. Find the 95% confidence interval of the true mean..
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