Each sweat shop worker at a computer factory can put together 4.9 computers per hour on average with a standard deviation of 0.8 computers. 13 workers are randomly selected to work the next shift at the factory. round all answers to 4 decimal places where possible and assume a normal distribution.

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Which number completes the system of linear inequalities represented by the graph? y> 2x – 2 and x + 4y 2 et 2 3 4

Choose the more precise measurement. 26.4 cm or 8.39 cm