A=110 B=45 C=110 D=110 E=110
6 tenths, 2 hundredths, 8 thousandth in standard form is:
.628
Knowing tenths is before hundredths you can easily place it first, then hundredths is second, lastly the thousandth is last
It means 68% of all the final scores went in bewtween 80 and 90 percent
Using the hypergeometric distribution, it is found that there is a 0.0065 = 0.65% probability that both David and Valerie get picked for the Tahitian dance lesson.
The people are chosen without replacement from the sample, hence the <em>hypergeometric distribution </em>is used to solve this question.
<h3>What is the
hypergeometric distribution formula?</h3>
The formula is:
The parameters are:
- x is the number of successes.
- N is the size of the population.
- n is the size of the sample.
- k is the total number of desired outcomes.
In this problem:
- There is a total of 18 people, hence .
- 2 people will be chosen, hence .
- David and Valerie corresponds to 2 people, hence .
The probability that both get picked is P(X = 2), hence:
0.0065 = 0.65% probability that both David and Valerie get picked for the Tahitian dance lesson.
You can learn more about the hypergeometric distribution at brainly.com/question/25783392
(-3s +2t)(4s -t) = -12s^2 +3st +8st -2t^2 = -12s^2 +11st -2t^2 so the last one choice is right sure