# math

posted by .

The probability of an event is 20%. how many times should you expect the event to occur in the given number of trials?

1.15 trials

2. 40 trials

3. 75 trials

4. 120 trials

• math -

Multiply each by .2.

## Similar Questions

1. ### math

for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
2. ### math

for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
3. ### math

for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
4. ### math

for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=20,p=1/8, x=2 I know the answer but I do not know how to get to that. Answer is 0.268 should I reduce …
5. ### Determining Probabilities

When would you expect the experimental probability of an event to be closest to its theoretical probability?
6. ### hunting training

2. Which of the following statements is true?
7. ### stats and prob

Consider a sequence of independent Bernoulli trials with p= 0.2 a) what is the expected number of trials to obtain the first success?
8. ### Algebra

Brandon flips two fair coins multiple times and records the frequency of the results in the following table. 50 trials|125trials|150trials HH 10 33 37 TH 9 31 38 HT 13 28 38 TT 18 33 37 DETERMINE THE EXPERIMENTAL PROBABILITY AND THEORETICAL …
9. ### Algebra

PLEASE HELP ME :( Brandon flips two fair coins multiple times and records the frequency of the results in the following table. 50 trials|125trials|150trials HH 10 33 37 TH 9 31 38 HT 13 28 38 TT 18 33 37 DETERMINE THE EXPERIMENTAL …