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A large industrial firm employs three local hotels to provide overnight accommodations to its clients. From past experience it is known that 20% of clients are assigned rooms at the Ramada Inn, 50%
If the automobile company wanted to change term of lease so that 25% of the leases went over the limit, where should the new upper limit be set?
A researcher is determining the impact of new technique of teaching Farsi. She concludes that new technique is significantly better than the old method, based upon a test with alpha = 0.05.
Discuss the sampling distribution of the mean. Describe how the population, sample, and sampling distribution can differ.
Assume that adults have IQ scores which are normally distributed with the mean of 105 and standard deviation 15. Determine P9, which is the IQ score separating the bottom 9% from the top 91%.
If a local survey estimated that In and Out customers were satisfied 75% of the time, What is the restaurant's expected gain over a long run?
In economics, of all new products put upon market, 90% fail and are taken off the market in three years. Using normal approximation for this binomial distribution without correction for continuity;
A researcher is determining the impact of new technique of teaching Farsi. She concludes that the new technique is significantly better than the old method, based upon a test with alpha = 0.05.
Write down a correct null and alternative hypothesis that tests the claim that the mean distance a student commutes to campus is no less than 9.7 miles?
For independent samples of 3 and 6, respectively, determine the mean and standard devriation of x1 and x2. Must the variable under consideration be normally distributed upon each of two populations f
The weekly incomes of large group of middle managers are normally distributed with mean of $1,500 and standard deviation of $150. Employ the standard normal distribution to calculate the following:
The weekly incomes of large group of middle managers are normally distributed with mean of $1,500 and standard deviation of $150. Show work and cal commands please. Employ the empirical rule to dete
Assume the probability of a student getting a multiple choice answer correct on a quiz is 0.80. On a 20 question quiz, what is the exact probability that a student will get a B (16 or 17 correct answe
Without actually generating the histogram, Determine the approximate shape of the histogram for the 5000 simulated rolls ofa die? how does it compare to the histogram that you just created of the 50
If no preliminary determine of the population proportion for people who have a given disease and react positively to a new drug, how many medical files should you include in a random sample in order
In a diagnostic a student correctly answers regarding 60% of the questions posed. But, after a full semester, there 43 points missed out of a total 150 points attempted; that is, this student answe
A study was conducted to determine the mean amount spent on birthday gifts for a typical family having two children. A sample of 195 was taken, and the mean amount spent was $210.97.
A study was conducted to determine the mean amount spent on birthday gifts for a typical family having two children. A sample of 195 was taken, and the mean amount spent was $210.97. Supposing a sta
How many measurements must be made in order to be 98% certain that maximum error of estimation will not exceed 0.5 seconds? What sample size is required for a maximum error of 1.0 seconds?
What is the formula for the standard error, What is the formula for the maximum error of estimate, Given this, what is the math relation between the two quantities?
Assume X has a Poisson distribution with a mean of 1.2. Determine the following probabilities. Round your answers to four decimal places
This exercise describes that poor quality can affect schedules and costs. A manufacturing process has 130 customer orders to fill. Each order needs one component part that is bought from a supplier.
Assume you've some data gathered from a repeated experiment. If you want to make inferences about the data collected, and knowing that it is highly unlikely that a density function will provide a pe
The test statistic is ?2.75 and the test Pvalue is 0.0092. Describe the null and alternative hypotheses using proper math notation, and conclude using a significance level of 5%
Describe the importance of Tchebysheff's Theorem to the ability to find bounds of probability.