posted by Gia on .
"Last year, the personal best high jumps of track athletes in a nearby state were normally distributed with a mean of 229 cm and a standard deviation of 19 cm. What is the probability that a randomly selected high jumper has a person best between 229 and 248 cm?"
I think the answer is 16%. Could someone check this for me?
"According to a poll conducted in a company, 47% of the employees regularly use the internet while at work. You conduct a similar survey at your mother's office where there are 250 respondents. What is the probability you find between 102 and 117.5 employees who use the internet while at work?"
I think the answer for this one is 47.5%, so could someone also check this one?
There were answers to your previous questions. Perhaps you could review the answers, and if you need further help, and state where you need clarifications with reference to the previous answers.