A class of 30 swim team members took a lifesaving test. Eighteen of the members had an average score of 92 points. The remaining members had an average score of 84 points. What was the average for the entire swim team?

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

Which of the following best describes the delian problem?