Math Homework

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The mean weight of an adult is 71 kilograms with a standard
The mean weight of an adult is 71 kilograms with a standard deviation of 13 kilograms.If 46 adults are randomly selected, what is the probability that the sample mean would be greater than 72.8 kilogr… read more
R.R. Jha
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Bachelor's Degree
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The mean per capita income is 21,604 dollars per annum with
The mean per capita income is 21,604 dollars per annum with a standard deviation of 727 dollars per annum.What is the probability that the sample mean would be less than 21635 dollars if a sample of 1… read more
R.R. Jha
Bachelor's Degree
Bachelor's Degree
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1). Assume that a random sample is used to estimate a population
1). Assume that a random sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. 98% confidence, the sample size… read more
Stevewh
Teacher
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1.Assume the readings on thermometers are normally distributed
1.Assume the readings on thermometers are normally distributed with a mean of 0 degrees C and a standard deviation of 1.00 degrees C. Find the probability that a randomly selected thermometer reads be… read more
Martin
Master's Degree
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(b) What is the standard error of the mean (Round your answer
(b) What is the standard error of the mean? (Round your answer to 2 decimal places.) Standard error of the mean seconds. (c) What percent of the sample means will be greater than 154 seconds? (Round y… read more
Stevewh
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Bachelor's Degree
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Gas mileage for a hybrid car is 57 miles per gallon. If the
Gas mileage for a hybrid car is 57 miles per gallon. If the gas mileage is approx normally distributed with a SD of 3.5 miles per gallon. A. what is the probability that a randomly selected hybrid get… read more
Ryan
Bachelor's Degree
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A racing car consumes a mean of 109 gallons of gas per race
A racing car consumes a mean of 109 gallons of gas per race with a standard deviation of 8. If 37 cars are randomly selected, what is the probability that the sample mean will be greater than 112.1 ga… read more
Stevewh
Teacher
Bachelor's Degree
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According to a car association the average cost of a gallon
According to a car association the average cost of a gallon of regular fuel at gas stations in a certain month was \$2.829. Assume that the standard deviation of such costs is \$0.15. Suppose that a ran… read more
Scott
Master's Degree
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The mean gas mileage for a kia is 56 miles per gallon. Suppose
The mean gas mileage for a kia is 56 miles per gallon. Suppose the gasoline mileage is approximately normally distributed with a standard deviation of 3.2 miles per gallon. a) What is the probability … read more
Chirag
Master's Degree
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8) During the last energy crisis, a government official claimed
8) During the last energy crisis, a government official claimed that the average car owner refilled the tank when there was more than 3 gallons left. To check the claim, 10 cars were surveyed as they … read more
Scott
Master's Degree
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1. The diameter of ball bearings produced in a manufacturing
1. The diameter of ball bearings produced in a manufacturing process can be explained using a uniform distribution over the interval 6.8 to 8.5 millimeters. The probability that a randomly selected ba… read more
Stevewh
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Bachelor's Degree
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1. Consider the relationship between the number of bids an
1. Consider the relationship between the number of bids an item on eBay received and the item's selling price. The following is a sample of 5 items sold through an auction. Price in Dollars 100 123 13… read more
Stevewh
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Bachelor's Degree
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The Ford Taurus was listed as having a highway fuel efficiency
The Ford Taurus was listed as having a highway fuel efficiency of 30 mpg (1995 Motor Trend New Car Buyer's Guide). A consumer interest group conducts automobile mileage tests seeking statistical evide… read more
SusanAthena
Master's Degree
Master's Degree
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3. (TCO 5) The probability that a house in an urban area will
3. (TCO 5) The probability that a house in an urban area will be burglarized is 3%. If 45 houses are randomly selected, what is the probability that one of the houses will be burglarized? a. Is this a… read more
abozer
Bachelor's Degree
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The capacity of a lift is 12 people or 1920 pounds. The capacity
The capacity of a lift is 12 people or 1920 pounds. The capacity will be exceeded if 12 people have weights with a mean greater than 1920/12=160 pounds. Suppose the people have weights that are normal… read more
abozer
Bachelor's Degree
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Hi, Please any help will be appreciated. Use the normal
Hi, Please any help will be appreciated. Use the normal distribution od SAT critical reading scores for which the mean is 508 and the standard deviation is 120. Assume the variable x is normally distr… read more
Stevewh
Teacher
Bachelor's Degree
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1.a vending machine dispenses coffee into a twenty ounce cup.
1.a vending machine dispenses coffee into a twenty ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.06 ounce. You can allow the cup to over… read more
Stevewh
Teacher
Bachelor's Degree
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An advertising agency is hired to introduce a new product.
An advertising agency is hired to introduce a new product. The agency claims that after its campaign 43% of all consumers are familiar with the product. We ask 4 randomly selected customers whether or… read more
Chirag
Master's Degree
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