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Shalnov [3]
3 years ago
5

Amit is going to guess on all

Mathematics
2 answers:
tigry1 [53]3 years ago
7 0

Answer:

Close to five but not exactly 5

Step-by-step explanation:

Khan Academy

Papessa [141]3 years ago
4 0

Answer:

The best prediction for the number of questions that Amit will answer correctly is 5.

Step-by-step explanation:

Each question can be considered as an independent Bernoulli trial. This implies that we have 20 independent trials.

Now, the probability of making a correct guess on each question is;

1/4. This is because we have 4 choices per question and only 1 is correct.

If we now let the random variable X denote the number of questions that Amit will answer correctly, then X is a Binomial random variable with parameters;

20 and 1/4.

The expected number of correct answers is simply the product of these two values;

20 * (1/4) = 5

Therefore, the best prediction for the number of questions that Amit will answer correctly is 5

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Answer:

Total\ amount\ of\ paint\ mike\ mixes\ is\ \frac{19}{24}\ gallons

Step-by-step explanation:

As given

Mike\ is\ mixing\ paint\ for\ his\ walls.

He\ mixes\ \frac{1}{6}\ gallon\ blue\ paint\ and\ \frac{5}{8} \ gallon\ green\ paint\ in\ a\ large\ container.

Thus

Total\ amount\ of\ paint\ mike\ mixes = \frac{1}{6} + \frac{5}{8}

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Than

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C

Step-by-step explanation:

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