The mean mass of 8 boys is 55 kg and the mean mass of a group of girls is 52 kg. the mean mass of all the children is 53.2 kg. how many girls are there?

The probability that you roll a two on a six-sided die is 1 6 16 . if you roll the die 60 times, how many twos can you expect to roll

Graph the line with the given slope m and y-intercept b. m=-3,b=1

A. the probability that a product is defective is 0.1. what is the probability that there will be 1 or less defective products out of the next 8 produced products b. the expected number of imperfections in the coating nylon for parachutes is 6 per 100 yards. what is the probability of finding 12 or fewer imperfections in 260 yards c. in a lot of 54 products there are 9 defective products. calculate the probability that not more than 1 is defective from a random sample of 17 products.