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A recent study of the hourly wages of maintenance crew members for major airlines showed that the mean hourly salary was $20.50, with a standard deviation
During summer weekdays, boats arrive at the inlet drawbridge according to the Poisson distribution at a rate of 3 per hour.
From the data I gathered I developed histograms and calculated descriptive statistics
A stock price is currently $100. Over each of the next two three-month periods it is expected to increase by 10% or fall by 10%.
Wildlife Hummingbirds Selasphorus sasin is the scientific name for what is commonly called "Allen Hummingbird"
Use this table to response questions below: Some students were asked if they carry a credit card. Here are the responses.
On average, 40% of U.S. beer drinkers order light beer.
Some normal probability distributions may have the same mean, but their standard deviation may be different
How to calculate probabilities without knowing the std deviation.
A financial analyst estimates that the probability that the economy will experience a recession in the next 12 months is 20%
Money magazine reported that the average price of gallon of gasoline in the United States during the first quarter of 2001 was $ 1.46.
The personnel office at a large electronics firm regularly schedules job interviews and maintains records of the interviews
Consider babies born in the "normal" range of 37 - 43 weeks gestational age. Extensive data supports the assumption that for such babies born
A radio station that plays classical music has a "By Request" program each Saturday night. The percentage of requests for composers on a particular night
A newspaper article reported that people spend a mean of 6 hours per day watching TV, with a standard deviation of 1.9 hours
An investment will be worth $1,000, $2,000, or $5,000 at the end of the year. The probabilities of these values are .25, .60, and .15, respectively
An alcohol awareness task force at Big-Ten university sampled 20 students after the midterm to ask them whether they went bar hopping the weekend
If a person were to be hit by lightning, they have a 33 percent chance of being killed.
In previous tests, baseballs were dropped 24 feet onto a concrete surface, and they bounced an average of 92.84 inches
The following payoff table shows profits associated with a set of 3 alternative under 2 possible states of nature.
Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees and a standard deviation of 1 degrees C.
Assume that mens weights are normally distributed with a population mean of 172 pounds and a population standard deviation of 29 pounds.
The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. One classic use of the normal distribution
Use the Poisson Distribution the indicated probabilities in one year, there were 116 homicide deaths in Richmond VA.
Use the Poisson distribution to find the indicated probabilities. Currently, 11 babies are born in the village of West point, population of 760, each year.