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Find mean and standard deviation for given data and make a histogram under Binomial distribution. The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Assume the batch contains 1% defective syringes.
a) Make a histogram showing the probabilities of r = 0, 1, 2, 3, 4, 5, 6, 7, or 8 defective syringes in a random sample or eight syringes.
b) Find μ. What is expected number of defective syringes the inspector will find?
c) What is the probability that the batch will be accepted?
d) Find out σ.
A small town has a population of 20,000 people. Among these 1,000 regularly visit a popular local bar. A sample of 100 people who visit the bar is surveyed for their annual expenditures in the bar.
Determine the estimated population mean?
Compare 2 moving averages using MSE and compute Exponential smoothing. The subsiquent data which represents demand for company ABC's products for the last 10 months.
The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?
How much would ING be willing to pay if the General Counsel could arrange for an absolutely reliable mock trial?
The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
What is the probability that a randomly chosen eight-week old baby smiles between 2 and 18 seconds?
At the .05 significance level, is there a difference in the mean number of calls per day between the two employees?
Suppose that a researcher does a study to see how level of anxiety (A 1 = low, A 2 = medium, A 3 = high) is used to predict exam performance (Y).
Find the probability that the number of who consider themselves basketball fans is :
What the information do z-scores give that actual heights do no?
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