The average height of a 13 year old male in the u. s. is 60 inches, with a standard deviation of 2 inches. the average weight of a 13 year old male in the u. s. is 100 pounds, with a standard deviation of 5 pounds. if daniel, a 13 year old male, is 68 inches tall and weighs 115 pounds, is his height or weight more unusual?

The larger the magnitude of the z-score in each case, the more unusual the situation is.

Height: mean 60, std. dev. 2. If Daniel is 68 inches tall, the z score describing his height is

68-60

z = = 4 Any z score whose magnitude is greater than 2 is very

2 unusual. In this case, Daniel's height is practically off

the scale!

Weight

115-100

z = = 3 This is considered to be very unusual, but not so

5 unusual as a z-score of 4 (above).

answer: the value of x is 7cm

step-by-step explanation: