O A CLASS OF JOO STUDENTS OBTAINED THE FOLLOWING GRADES IN ASSIGNMENT OF A STATISTICS COURSE NUMBER OF STUDENTS ALPHA GRADE % RANGE At 90 - 100 100 85- 89 A 140 A - 80 - 84 B + 76 - 79 180 B 73- 75 B - TO - 72 70 COR BELOW 0 - 69 TOTAL 500 IF ONE STUDENT IS SELECTED AT RANDOM FIND THE PROBABILITY ( ROUND TO TWO DECIMALS ) THAT THE STUDENT a . ) Received an A b/ Received atleast 80 % ( A - or A or At ) c . ) did not obtain an A d . ) Obtained either At or B+ e. ) obtained below 70% 2 A CUSTOMER VISITS A LOCAL FRESH FRUITS AND VEGETABLE & STORE REGULARLY. LET EVENTS A = THE CUSTOMER B.BUY APPLES, B- CUSTOMERS BUYS BANANAS, AND C: CUSTOMERS BUYS CHERRIES . CONSIDER THE FOLLOWING PROBABILITIES P ( A ) = 0.30 a . ) Find PCAIR ) PCB ) = 6. 63 b. ) P ( Band c ) P Cc ) = 0.15 c. ) P (A or B ) P ( A AND B ) = 0.14 d .) A and C mutually exclusive events P ( AAND C ) = 0. 06 TRUE P Cc / B ) = 0.29 FALSE 2. ) A and C independent events True False (. ) Find the propa probability of the complement of event A