Question

The following table shows the frequency of outcomes when two distinguishable coins were tossed 6,000 times. What is the estimated probability that heads comes up at least once?

Outcomes HH HT TH TT
Frequency 1,501 1,505 1,502 1,492
a) 0.5002
b) 0.7513
c) 0.0008
d) 0.2508
e) 0.2503
f) None of the above.

**I GOT B BUT NOT SURE IF IT'S RIGHT.