Predict which statements are true about the intervals of the continuous function. Check all that apply.
f(x) > 0 over the interval (-x, 3).
f(x) 0 over the interval [0, 2].
f(x) <0 over the interval (-1, 1).
of(x) > 0 over the interval (-2, 0).
of(x) > 0 over the interval [2, ).

Which of the following circles have their centers on the x-axis? check all that apply.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

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.