Ihope some one can me!
the mean midday temperature recorded in june in a city in south california is 36_c, and the standard deviation is 3_c.
assuming the data is normally distributed, the number of days in june when the midday temperature was between 39_c and 42_c is?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.