IQ scores are often reported to be normally distributed with a mean = 100.00 and standard deviation = 15.0. A random sample of 55 people is taken. What is the probability that the mean IQ score of people in the sample is less than 98?

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?