What is 100/2+50/2

:D

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the