We have the formula to compute the probability of having exactly k successed over n trials, given a probability p of success (and implicitly a probability 1-p of failure), which is
Now, the probability of at least 3 successes is the union of the following event: exactly three successes,exactly four successes and exactly five successes.
We can compute their probability and sum them:
So, the answer is about 36.79%
Answer:
x + 2 < 13
Step-by-step explanation:
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9514 1404 393
Answer:
17.3%
Step-by-step explanation:
The rate of return is the net profit divided by the purchase price.
The purchase price was ...
(20 share) × ($30/share) = $600
The net proceeds from the sale were ...
proceeds = selling price - commission
= $710 -$6 = $704
So, the net profit is ...
profit = $704 -600 = $104
And the rate of return is ...
profit / investment = $104/$600 = 17.3%
State your research hypothesis and alternate hypothesis.
Collect data in a way designed to test the hypothesis.
Perform an appropriate statistical test.
Decide whether to keep or reject your hypothesis.
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