Average

During a month, the average day temperature of a desert region was 43^(@)C and the average night temperature was -6^(@)C . Find the difference between the average day temperature and the average night temperature.

Put the correct symbols in the following statements : I. The average life span of a crow ........ then the average life span of a parrot . II. The average life span of a rose plant ...... then the average life span of a rice plant. III. The average life span of a cow .... than the average life span of a crocodile. IV.The average life span of a banyan tree ..... then the average life span of a banana tree.

In a class of 75 students, 15 are above average, 45 are average and the rest below average achievers. The probability that an above average achieving student fails is 0.005, that an average achieving student fails is 0.05 and the probability of a below average achieving student failing is 0.15. If a student is known to have passed, what is the probability that he is a below average achiever?

In a class of 75 students, 15 are above average, 45 are average and the rest below average achievers. The probability than an above average achieving student fails is 0.005, that an average achieving student fails is 0.05 and the probabilit of a below average achieving students failing is 0.15. If a student is known to have passed, what is the probability that he is a below average achiever?