the brain volumes ( cm^3) of 50 brains vary from a low of 912 cm^3 to a high of 1496 cm3. Use the range rule of thumb to estimate the standard deviation s and compare the results to the exact standard deviation of 178.2 cm^3 assuming the estimate is accurate if it is within 15cm^3 answer key

Jose is going to use a random number generator 500500 times. each time he uses it, he will get a 1, 2, 3,1,2,3, or 44.

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20