In an experiment a die was rolled N times. The experimental probabilities recorded were: P(1) = 0.16, P(2) = 0.18, P(3) = 0.14, P(4) = 0.20, P(5) = 0.15. The number 6 came up 51 times. Find P(6) and then the total number of rolls N.
Class 9Experimental ProbabilityStatistics
AP(6)=0.17,N=300
BP(6)=0.17,N=51
CP(6)=0.16,N=300
DP(6)=0.18,N=283
Step-by-Step Solution
P(6)=1−(0.16+0.18+0.14+0.20+0.15)=1−0.83=0.17. Since 51 rolls correspond to P=0.17,N=0.1751=300.
Answer: A) P(6)=0.17,N=300
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.