1. Suppose IQ's are well described by a normal
model with means 100 and standard deviation 16. Use the normalcdf and invNorm
functions to answer the following:
a) What percent of IQ's would you expect to be between
112 and 132?
b) What percent of IQ's would you expect to be
c) What percent of IQ's would you expect to be
d) What IQ is required to be in the to 3 percent
of all IQ's
2. The table shows the number of live births per
1000 women aged 15-44 years in the United States
your calculator to make a scatter plot. Describe its shape (no need to
reproduce the scatterplot here.) Enter the years as 65, 70, 75, ect.
the equation of the regression line.
the correlation coefficient for this data. Interpret the value of r.
the equation of the regression line to estimate the birth rate in 1978.
you use the equation of the regression line to predict the birth rate in 2014.
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