Here are summary statistics for randomly selected weights of newborn girls: n=185,
x bar = 31.4 hg, s=7.5 hg. construct a confidence interval estimate of the mean. use a 95% confidence level.

what is the confidence interval for the population mean μ?

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

What is the measure of each of the two angles formed by the bisector of the diagonal of a rhombus if the original angle measures 58 degrees?