Use the ogive to answer parts a) through d). Male Beagles

a

50-

45

40-

35-

30-

Cumulative frequency

a) What is the cumulative frequency for a weight of 27.5 pounds?

41 (Type an integer or a decimal.)

b) What is the weight for which the cumulative frequency is 45?

30.5 (Type an integer or a decimal.)

c) How many beagles weigh between 22.5 and 29.5 pounds?

34 (Type an integer or a decimal.)

d) How many beagles weigh more than 30.5 pounds?

(Type an integer or a decimal.)

*I need help with the last one (d) please, I don’t understand what I have to do to get the answer*

An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb.the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.