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Boston Rainfall. The daily rainfall amounts (in inches) for Boston in a recent year consist of 365 values with these properties:
The mean daily rainfall amount is 0.083 inch.
The median of the daily rainfall amount is 0 inches.
The minimum daily rainfall amount is 0 inches and the maximum is 1.48 inches.
a) How is it possible that the minimum of the 365 values is 0 inches and the median is also 0 inches?
b) Describe the distribution as symmetric, left-skewed or right-skewed.
c) Can you determine the exact number of days that it rained? Can you conclude anything about the number of days that it rained? Explain.
The data show the total number of medals (gold, silver, and bronze) won by each country winning at least one gold medal in the 2006 Winter Olympics. Find the mean, median, and mode of the numbers of medals won by these countries.
If the average low temperature of a winter month in Rochester, NY, is 16° and the standard deviation is 4.6 then according to Chebyshev's theorem, the percentage of average low temperatures in Rochester, NY, between 2.2° and 29.8° is %.
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Compute the mean, median and mode measures of central tendency for the number of years of work experience. Which measure does the best job of describing central tendency for this variable?
Find out the required probabilities utilizing Binomial distribution. According to Best buy, 2/3 citizens have iPods. In a randomly selected group of 3 iPod owners.
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An industrial chemical to retard the spread of fire in paint has been developed. From past experience, 48% of sales calls will result in an order.
An advisory group decided to investigate this claim, believing it was too large. A sample of 200 traffic accidents this year showed 74 persons were also involved in another accident within the last five years. Use the 0.01 significance level. Show..
At.02 significance level is it sensible to conclude that mean number of shoes sold at mall stores is larger than at outlet stores?
What is the probability of this actually happening?
The times it takes workers to complete a task at a certain assembly plant are normally distributed with mean = 10 minutes and standard deviation = 2 minutes.
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