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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
Determine the probability of finding 7 or more requests for hard disk drives with low storage capacity if the VP's assertion is correct. Do you believe that the proportion of customers requesting ha
When estimating a new capability (a product or service) that may be unprecedented, involve the application of new technologies or procedures, or a different mix of technologies and procedures, you
Glucose levels in patients free os diabetes are assumed to follow a normal distribution with a mean of 120 and stand deviation of 16. What proportion of patients have glucose levels exceeding 115?
In a game of bridge, each player gets 13 cards. In how many ways can a person get a bridge hand consisting of 2 aces, 1 king, 1 queen, 3 jacks and the other 6 cards 10 or less?
In a game of bridge, each player gets 13 cards. In how many ways can a person get a bridge hand consisting of only aces or face cards?
A fourth grade student has a list of 8 books for her subjects. Due to rising costs, the student cannot afford to buy all eight at once but must settle for five. English and Mathematics are the stude
A fourth grade student has a list of 8 books for her subjects. Due to rising costs, the student cannot afford to buy all eight at once but must settle for five. How many different sets of books are
The director of a government agency has been given a list of 12 firms cited for unfair labor practices. Because of staff shortage and inefficiency, only one-fourth of these 12 can be charged. How ma
A sample of items is selected from a lot of 50 items known to contain 10 defective items. How many different samples are possible?
A set of data is normally distributed with a mean of 200 and standard deviation of 50. What would be the standard score for a score of 300? What percentage of scores is between 200 and 300?
Find the normal approximation for the binomial probability that x = 6, where n = 15 and p = 0.3. Compare this probability to the value of P(x=6) found in Table 2 of Appendix B in your textbook.
The diameters of grapefruits in a certain orchard are normally distributed with a mean of 7.25 inches and a standard deviation of 0.75 inches. Show all work. What percentage of the grapefruits in th
Find the area under the standard normal curve:
You note that your officer is happy on 60% of your calls, so you assign a probability of his being happy on your visits as 0.6.You have noticed also that if he is happy, he accedes to your request
A device uses two components in such a way that the device will no longer function if either of the components wears out. Suppose that each component lifetime is random and uniformly distributed on
Write a command in Mathematica to simulate an outcome from a finite sample space with outcomes a,b,c and d with probabilities p1, p2, p3, p4, respectively.
Do you think there is a correlation between CEO salaries and the degree of success of a company? If you were to take a sample of companies with comparable size, market capitalization, and product ca
A sample of 140 golfers showed that their average score on a particular golf course was 93.38 with a standard deviation of 4.36. Answer each of the following (show all work and state the final answer
At a certain gas station, 40% of customers use regular gas (A1), 35% use plus gas (A2), and 25% use premium (A3). Of those customers using regular gas, only 30% fill their tanks (event B). Of those
For the following describe what would be the roles of descriptive and inferential statistics be in the analysis of these data? : A medical researcher is testing the effectiveness of a new drug for t
An object having mass 70kg falls from rest under the influence of gravity. The terminal velocity of the object is -20m/s. Assume that the air resistance is proportional to the velocity. Find the vel
Construct a percentage histogram. Is the steel mill doing a good job in meeting the requirements set by the automobile company? Explain.
For the following please state the independent and dependent variables with an explanation (justification):
The number of orders a department fills varies between 0 and 10 from day to day with the following probabilities: .02, .07, .15, .20, .19, .16, .10, .06, .03, .01, and .01.