According to geologists, the San Francisco Bay Area experiences six earthquakes with a magnitude of 4.8 or greater every 100 years. What is the standard deviation of the number of earthquakes with amagnitude of 4.8 or greater striking the San Francisco Bay Area in the next 20 years?Multiple Cholce6.0001.2002.6361.095

Answered: According to geologists, the San…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The weights for a population of North American raccoons have a bell shaped frequency curve with a mean of about 12 lbs. and a standard deviation of about 2.5 lbs.About 95% of the weights fall between what two values?A. 11.75 and 12.25B. 11.5 and 12.5C. 2.5 and 12D. 7 and 17E. 9.5 and 14.5
Suppose that the weight of a particular hand weight is advertised to be 5 pounds, but it can actually be as little as 4.9 pounds or as much as 5.5 pounds. What is the standard deviation of the weight? Round your answer to two decimal places.
The U.S. Fish and Wildlife Service reported that the mean length of six-year-old rainbow trout in the Arolik River in Alaska is 481 millimeters with a standard deviation of 41 millimeters. Assume these lengths are normally distributed. What percent of six-year-old rainbow trout are between 400 and 500 millimeters long? Round your answer to four decimal places.
Which statistical measurement is used to measure minutes? Is it ordinal, nominal or scaled?
A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 28,000 miles and a standard deviation of 2500 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires? Click to view page 1 of the table. Click to view page 2 of the table. Tires that wear out by miles will be replaced free of charge. (Round to the nearest mile as needed.)
The life of light bulbs is distributed normally. The standard deviation of the lifetime is 20 hours and the mean lifetime of a bulb is 580 hours. Find the probability of a bulb lasting for at most 613 hours. Round your answer to four decimal places.
A certain brand of car has an average lifespan of 15 years, which is exponentially distributed. Find the standard deviation of the cars' lifespans. Do not include units in your answer. Provide your answer below:
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 15 years, and a standard deviation of 3.9 years.The 3% of items with the shortest lifespan will last less than how many years?Give your answer to one decimal place.
A lightbulb is advertised as lasting 1000 hours with a standard deviation of 150 hours. Assume the life of the lightbulb is normally distributed. what percentage of the lightbulbs will last less than 1250 hours
A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what percentage of students spend less than 12 hours in class?
A soft drink machine at a local fast food restaurant can be calibrated so that it dispenses an average of u ounces per cup. If the ounces of soda dispensed are normally distributed with standard deviation 0.5 ounces, find a value of u such that 36-ounce cups will overflow only 10% of the time. Round the solution to one decimal place, if necessary. ounces
The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances that someone is earning more than $20 an hour?

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