Answer:
35 is 2 standard deviations BELOW the mean of 43
51 is 2 standard deviations ABOVE the mean of 43
find z - score for + 2 S.D. then subtract the z-score for - 2 S.D.
This is the percentage ( in decimal form) of 200 members between the ages of 35 and 51 Can you finish?
Over all it’s still a 1/3 of getting a 2 when rolling
1 hour 36 minutes because 3/5 of an hour is 36 min.
Answer and workings in attachment below.