Let
f(x)=
1
2

x
2
+4
.
the function
g(x)
is a vertical stretch of
f(x)
by a factor of 4.
what is the equation of
g(x)
?

enter your answer in the box.

g(x)
=

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.