Chips ahoy wants to perform a study to determine the number of chocolate chips in their cookies. to that end, they collected a sample of 40 cookies. the mean of this sample is 23.95 chocolate chips. from past studies, we know that the standard deviation is 2.55 chocolate chips. construct a 99% confidence interval of the mean of chocolate chips in all such cookies.

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.