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The BMW Z8, Ferrari, and Lamborghini have notably low gas mileage among the two-seater cars in the table below). Find the five-number summary (median, the quartiles (first and third quartile), and the high and low extremes) of the city gas mileages. Create a histogram with a class width of 2 (see How to Make a Histogram in Excel on Blackboard) and a boxplot of the data. Are any of these cars suspected low outliers by the Interquartile Range Rule (1.5×IQR rule)? (A point is a suspected outlier if it lies more than 1.5×IQR below the first quartile (Q1) or above the third quartile (Q3).) Recalculate and redraw any plots after checking for outliers, if needed.
Gas mileage (miles per gallon) for year 2002 model two-seater cars.
Bowling balls the sample standard deviation was found to be 0.52 pounds. Construct a 95% confidence interval for the variance of the bowling ball weight.
Do the sales prices of houses in a given community vary systematically with their sizes (as measured in square feet)?
why does a researcher want to go from a normal distribution to a standard normal
A leasing firm claims that the mean number of miles driven annually, m, in its leased cars is less than 13280 miles. A random sample of 150 cars leased from this firm had a mean of 12584 annual miles driven.
the main reason women seek medical attention for menopausal symptoms is hot flashes. dietary supplements containing
Find the mean and standard deviation for the number of left-handed students in such classes of 25 students.
find the present value of the investment.funding 100 withdrawls at the end of each month for 5 years at 4.75 intrest
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 70%.
what is the forecast for july based on a three-month weighted moving average applied to the following past demand data
a random sample of 625 12-ounce cans of fruit nectar is drawn from among all cans produced in a run. prior experience
an airline wants to estimate the average number of unoccupied seats per flight. a random sample of 105 flights is
A summary of data (deposits in thousands of dollars) from the survey is as follows: First National 1 = 4.1, σ1 = 1.2; City National 2 = 3.5, σ2 = 0.9. Use a 98% confidence interval to estimate the difference in the mean weekly deposits into IRAs f..
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