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A job only hires applicants who score 2 standard deviations or more above the mean on a skills test. If the mean is 77 and the standard deviation is 3, what score must you receive to be hired?
Question: A grocery store is hiring 5 new stock-persons for the summer. 19 equally qualified students apply for the job. In how many different ways can 5 students be hired.
Identify at least one example of probability encountered in everyday life. Explain how probability is used in that situation.
A researcher wants to estimate, at a 99% confidence level, the mean age of all persons who own sports cars. It is known that the standard deviation of the ages of all owners of spoert cars is 6 year
You have three pieces of string with lengths of 42 inches, 63 inches, and 77 inches. you need to cut pieces of equal length from these three pieces of string. How long should each piece be, and how
Of 1000 applicants for a mountain-climbing trip in the Himalayas, 450 get altitude sickness, 622 are not in good enough shape, and 30 have allergies.
If 2092 students have taken at least one of Spanish, French, and Russian, how many students have taken a course in all three languages?
In a survey of 270 college students, it is found that 64 like brussels sprouts, 94 like broccoli, 58 like cauliflower, 26 like both brussels sprouts and broccoli, 28 like both Brussels sprouts and c
Five cards are drawn from a standard 52-card playing deck. What is the probability that all 5 cards will be of the same suit?
Find the probability that an earthquake striking this region will Exceed 3.0 on the Richter scale. Fall between 2.0 and 3.0 on the Richter scale.
Ameesha drove car at 80 kmph and missed the flight by 5 min. If she drove at 100 kmph, she would have reached earlier by 10 min before the closing gates. How far is the airport from her house?
Find the standard deviation of Y= the length of life of a ramdom selected new drug. What is the probability that the value of Y falls in the interval µ+ 2σ?
A car averages 27 miles per gallon. If gas costs $4.04 per gallon, which of the following is closest to how much the gas would cost for this car to travel 2,727 typical miles?
Assuming that the numbers you received were generated at random, what are your expected winnings from the lottery? Is it worth 33 cents to enter this lottery?
Assuming that the attendant parks the cars at random, what is the probability that the three expensive sports cars are parked adjacent to one another?
Two cars leave towns 1000 kilometers apart at the same time and travel toward each other. One car's rate is 14 kilometers per hour less than the other's. If they meet in 5 hours, what is the rate of
Find the mean patent life for a new drug. Find the standard deviation of Y= the length of life of a ramdom selected new drug.
The table shows regulation distances between hurdles in women's and men's races. In both the women's and men's events, the race consists of a straight track with 10 equally spaced hurdles.Find the d
A tour operator charges Rs 136 per passenger for 100 passengers with a discount of Rs 4 each for 10 passengers in excess of 100. Determine the number of passengers that will maximize the amount of
A box contains 4 blue marbles, 1 red marbles, and 6 green marbles. Two marbles are selected at random from the box. If X is a random variable that counts the number of blue marbles selected, find th
Only 2% of a large population of 100-ohm gold-band resisters have resistance that exceed 105 ohms. What is the probability that the proportion of resisters with resistance exceeding 105 ohms in a ra
A random sample of n = 36 measurements is selected from a population with mean equal to 5 and standard deviation 3. What is the probability that the sample mean will exceed 6?
A chi-square goodness-of-fit test is to be performed. The relative frequencies for the null hyupothesis and the sample size are given. True or false, the assumptions for using a chi-square goodness-
An insurance sales representative sells policies to 5 men, all of identical age and in good health. According to the actuarial tables, the probability that a man of this particular age will be alive
Balls are drawn (one at a time) from an urn containing 50 balls numbered from 1 to 50. The ball is kept if it is numbered 1, and returned to the urn otherwise. What is the probability that the secon