At a bike shop, 2/3 of the bikes with bells are blue. you want a bike that has a bell and is blue. what fraction(part)of total bikes are available for you to purchase?

Question 5 spring semester final exam math evaluate

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Which number line correctly shows 0.8 + 0.3?