Chapter 5: Q.5.26 (page 348)
Use the following information to answer the next eight exercises. A distribution is given as .
What isa? What does it represent?
The value of the a is zeroand it is the lowest value of the.
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Use the following information to answer the next eight exercises. A distribution is given as
. What is b? What does it represent?
Use the following information to answer the next eleven exercises. The age of cars in the staff parking lot of a suburban college is uniformly distributed from six months (0.5 years) to 9.5 years. Find the average age of the cars in the lot.
On average, a pair of running shoes can last 18 months if used every day. The length of time running shoes last is exponentially distributed. What is the probability that a pair of running shoes last more than 15 months? On average, how long would six pairs of running shoes last if they are used one after the other? Eighty percent of running shoes last at most how long if used every day?
Carbon-14 is a radioactive element with a half-life of about
5,730 years. Carbon-14 is said to decay exponentially. The decay rate is 0.000121. We start with one gram of carbon-14.
We are interested in the time (years) it takes to decay carbon-14. What is the decay rate (m)?
The data that follow are the square footage (in 1,000 feet squared) of 28 homes
The sample mean = 2.50 and the sample standard deviation = 0.8302. The distribution can be written as .
What is ?
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