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Costs for standard veterinary services at a local animal hospital follow a Normal distribution with a mean of $74 and a standard deviation of $22. What is the probability that one bill for veterinary services costs between $41 and $107?

Most exhibition shows open in the morning and close in the late evening. A study of Saturday arrival times showed that the average arrival time was 2 hours and 2 minutes after the doors opened, and the standard deviation was estimated at about 44 minutes. Assume that the arrival times follow a normal distribution. At what time after the doors open will 55% of the people who are coming to the Saturday show have arrived? 2 hours 13 minutes 2 hours 1 minute O I hour 56 minutes O 2 hours 7 minutes O O hours 5 minutes

Not everyone pays the same price for the same model of a car. The figure - 99.7%- - 95%- +68% illustrates a normal distribution for the prices paid for a particular model of a new car. The mean is $22,000 and the standard deviation is $2000. Use the 68-95-99.7 Rule to find what percentage of buyers paid between $18,000 and $22,000. 22 18 20 Price of a Model of a New Car (Thousands) 24 26 28 %. The percentage of buyers who paid between $18,000 and $22,000 is (Type an exact answer.) Number of Car Buyers

The lifetime of a particular brand of AA batteries follows a normal distribution. The mean lifetime of particular brand of AA batteries is 1000 hours, with a standard deviation of 100 hours. What is the probability that a randomly selected battery lasts more than 875 hours?     Select one: a. 0.8716 b. 0.3749 c. 0.1056 d. 0.8944

A door-to-door salesperson is visiting houses in Hamilton to sell internet plans. The probability that a house decides to buy the internet plan is 25%. The salesperson visits 100 houses. Using normal approximation, determine the mean, standard deviation, and probability that less than 30 houses buy the internet plan.

In a normal distribution, what z-score cuts off the top 15% of the distribution? z = -0.91 z = +0.91 z = -1.04 z = +1.04

The weight of competition pumpkins at the Circleville Pumpkin Show in Circleville, Ohio, can be represented by a normal distribution with a mean of 703 pounds and a standard deviation of 347 pounds.  Find the probability that a randomly selected pumpkin weighs at least 1,622 pounds. Find the probability that a randomly selected pumpkin weighs between 465.1 and 1,622 pounds.

Consider an investment whose return is normally distributed with mean of 8% and a standard deviation of 5%. A. Determine the probability of losing money. B.Find the probability of losing money when the standard deviation is equal to 10%.

The Normal model N(150,10) describes the distribution of scores on the LSAT, a standardized test required by most law schools. Which of the following questions asks for a probability, and which asks for a measurement? Identify the type of problem and then answer the given question. a. A law school applicant scored at the 60th percentile on the LSAT. What was the applicant's LSAT score? b. A law school applicant scored 164 on the LSAT. This applicant scored higher than what percentage of LSAT test takers? a. Identify the type of problem. Statement a asks for a What was the applicant's LSAT score? (Round to the nearest integer as needed.) b. Identify the type of problem. Statement b asks for a This applicant scored higher than what percentage of LSAT test takers? |% (Round to the nearest integer as needed.)