Lv 1197 points

# Leslie

• ### Why do we worry about calculating a standard error when conducting a hypothesis test?

Physics1 week ago

• ### Z scores -- What proportion of the distribution for this sample scored below Viviana’s score?

Mathematics3 weeks ago

• ### What interpretation can you make for each of these class levels? Which one looks more approximately normal?

Mathematics4 months ago

• ### Math, statistics... How to I make a frequency distribution with this?

Just answer the frequency distribution. Once I know that, I can do the rest on my own.

• ### Math, statistics...Given the population of men has normally distributed weights with a mean of 172 lb and a standard deviation of 29 lb?

a) if one man is randomly selected, find the probability that his weight is greater than 175 lb.

b) if 20 different men are randomly selected, find the probability that their mean weight is greater than 175 lb (so that their total weight exceeds the safe capacity of 3500 pounds).

• ### spheres A and B had equal charges and were a distance d apart. He made the charge on B?

one-fourth the charge on A. How far apart would the two spheres then have to be for A to have the same deflection it had before?