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Determine the true difference between proportions of samples containing the harmful bacteria, with the 95% confidence coefficient. Does the chemical appear to be effective in reducing amount of bact
Calculate the mean bsorbance, the standard deviation and the standard error. Does this series of measurements meet a standard of CV = 2%?
A newspaper finds out that the mean number of errors per page is eight. Find out the probability that (a) exactly four typographical errors are found on the page, (b) at most four typographical erro
The pilot study was initiated because of the costs involved in sampling. Each sampled observation costs approximately $10 to obtain. Originally, it was thought that the population's standard deviati
In 1994, the General Social Survey had question that asked its participants (that currently smoked) if they had ever tried to quit smoking. Out of 142, 117 said yes, they had tried to quit smoking.
Ignoring all other partial losses, what premium must the insurance company charge for the yearly policy in order to break even on all %85,000 policies in this area?
Find out the indicated probabilities using geometric distribution or Poisson distribution. The determine if the events are unusual. If convenient employ a Poisson probability table or technology to
In 1994, the General Social Survey had the question that asked its participants (that currently smoked) if they had ever tried to quit smoking. Out of 142, 117 said yes, they had tried to quit smoki
A study on students drinking habits wants to find the true average number of alcoholic drinks all FSU undergraduate students who are members of a fraternity or sorority have in a one week period.
It is needed that at least 1,800 pieces are inspected daily, and the company wants to reduce the cost. Formulate this as a Linear Program and solve it. What does a non-integer solution mean (and is
Assume 89% of all students taking beginning programming course fail to get their first program to run on the first submission. Employ a binomial distribution and assign probabilities to possibilitie
If so, give a formula for approximation and measure the binomial probabilities and Poisson probabilities numerically. Let b(k, n, p) be the probability of exactly k successes in n independent trials
Let U, V be random numbers selected independently from interval [0; 1] with uniform distribution. Find out the cumulative distribution and density of each and every of the variables (a) Y = U + V. (
Determine the researcher's 90% confidence interval for \mu ?______ mg/dl to ______mg/dl.
A recent survey found that 70% of all adults over 50 wear sunglasses for driving. In random sample of 10 adults over 50, determine the probability that at least six wear sunglasses?
The president of Doerman Distributors, Inc., believes that 30% of firm's orders come from first-time customers. A random sample of 100 orders will be employed to determine the proportion of first-t
A study of the pay of CEOs examined the raise in cash compensation of CEOs of 104 companies, adjusted for inflation, in recent year. The mean raise in real compensation was M=5.8 percent.
The expected peak expiratory flow rate in adults is 300 with standard deviation of 50. How many subjects must be enrolled to ensure 80% power to detect a difference of 15 liters per minute with two-
The chamber of commerce of Florida Gold Coast community advertises that area residential property is available at the mean cost of $125,000 or less per lot. Assume a sample of 32 properties provided
How many ways can the five students walk in through the door late (i.e. first, second, third, etc) and how many ways can the students come in if a computer science student must be first?
Determine the probability that a typical hospital would have 14 or more infections in sample of this size? Considering this probability, comment on whether Grove Tree Mountain may not be a typical h
An airline promotion to business travelers is based upon the assumption that two thirds of travelers employ a laptop computer on overnight business trips. An American express-sponsored survey showed
How many combinations are possible if you combine three letters and 3 numbers, with no restrictions on repeated characters or their order. The only restriction is that the I and O are not to be used
A study on students drinking habits wants to find out the true average number of alcoholic drinks all UF underclassmen students have in one week period. We know from preliminary studies that the sta
Find out the constant c such that f(x) is a probability density function (pdf). Determine the expected value (E(x)) of X.