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Lunna [17]
3 years ago
15

How many four-digit numbers are there that the sum of the digits is 8?

SAT
1 answer:
elena-s [515]3 years ago
8 0

Answer:

the answer to this question is 120

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All of the following are mistakes that students should avoid when submitting an application except sending in their application too early.
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About ​% of the population of a large country is. If two people are randomly​ selected, what is the probability both are ​? what
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Using the binomial distribution, it is found that there is a:

  • 0.0036 = 0.36% probability that both are allergic to pollen.
  • 0.1164 = 11.64% probability that at least one is allergic to pollen.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

Researching the problem on the internet, it is found that:

  • 6% of the population is allergic to pollen, hence p = 0.06.
  • Two people are chosen at random, hence n = 2.

The probability that both are allergic is P(X = 2), hence:

P(X = 2) = 0.06^2 = 0.0036.

0.0036 = 0.36% probability that both are allergic to pollen.

The probability of at least one is:

P(X >= 1) = 1 - P(X = 0) = 1 - 0.94^2 = 1 - 0.8836 = 0.1164.

0.1164 = 11.64% probability that at least one is allergic to pollen.

More can be learned about the binomial distribution at brainly.com/question/24863377

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Why adapting your perspective towards stressful situations is important.
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It sets out your intentions – what you intend to do about your stress, including some of the things on those lists of techniques. When you are stressed, your ability to think, remember, make decisions and concentrate are compromised, so having a plan keeps you on track.
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When determining the scope of an experiment, you need to consider (select all that apply).
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The options to be considered when determining the scope of an experiment are;

C: What results to report

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An experiment is simply defined as a scientific procedure that is done in order to make a discovery, test a hypothesis, or prove a known fact.

Now, when conducting an experiment, we must know exactly what we are testing for and this will in turn influence the result we will be reporting for.

Secondly, we must know that there is a possibility that the results may differ under different factors.

In conclusion, options C and D are correct.

The options missing are;

A. which data you will collect and plot.

B. the outcome you will investigate.

C. what results to report.

D. the factor that will vary.

Read more about Experiments at; brainly.com/question/15402972

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after calculating the price of elasticity, a show company increases their price of running shoes slighty. What can you infer abo
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