Question

please solve my question​

Answer 1

Answer:

16) Total number of trials=500

H2→two heads showing up

H→ one head showing up

T2→two tails showing up

P(H2)=105/500=21/100

P(H1)=275/500=13/25

P(T2)=120/500=6/25

17) 80 bulbs are selected at random from a lot and their times (in hours) is recorded in the form of a frequency table given below : Lifetime (in hours) 300. 500.