Anumber line from 0 to 1 is cut into 6 equal parts. what is the size of each part

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Amanufacturer knows that their items have a normally distributed lifespan, with a mean if 9.1 years, and standard deviation of 2.9 years. if you randomly purchase one item, what is the probability it will last longer than 10 years?