I NEED HELP WITH NUMBERS 2 AND 3 , AND ALSO THE QUESTION 3 FOR ONE AND TWO IF THAT MAKES SENSE TYSM

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

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?