Concept explainers
The graph in Exercise 61 shows the wind speed
a. Use the data in the table to find the least-squares regression line. Round the slope to 2 decimal places and the y-intercept to the nearest whole unit.
b. Use a graphing utility to graph the regression line and the observed data.
c. Use the model in part (a) to approximate the wind speed of a hurricane with a barometric pressure of 900 mb.
d. By how much do the results of part (c) differ from the result of Exercise 61(c)?

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ALEKS 360 ACCESS CARD PRECALCULUS 18 WK
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