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koban [17]
2 years ago
9

Whats the mean of 72+72+72+79+82+82+88?

Mathematics
1 answer:
creativ13 [48]2 years ago
6 0

Answer:

78.1428571429

Step-by-step explanation:

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Your bike lock has 3 digits numbered 0 through
KATRIN_1 [288]
I think the answer is 81
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3 years ago
Philip ran out of time while taking a multiple-choice test and plans to guess the last 4 questions. Each question has 5 possible
White raven [17]

Using the binomial distribution, it is found that there is a 0.4096 = 40.96% probability that he answers exactly 1 question correctly in the last 4 questions.

<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.

Considering that there are 4 questions, and each has 5 choices, the parameters are given as follows:

n = 4, p = 1/5 = 0.2.

The probability that he answers exactly 1 question correctly in the last 4 questions is P(X = 1), hence:

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

P(X = 1) = C_{4,1}.(0.2)^{1}.(0.8)^{3} = 0.4096

0.4096 = 40.96% probability that he answers exactly 1 question correctly in the last 4 questions.

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

#SPJ1

8 0
1 year ago
Help thank you!!!!!!!
Vesnalui [34]

v = \sqrt{4900} + \sqrt{8100} = 70 + 90 = 160

Answer: D. 160

5 0
2 years ago
What is the 1st term when −5z2 + 7z4 + 11z − 8z3 is arranged in descending order
patriot [66]
Descending order...largest to smallest
the largest one is the one with the biggest exponent
so the first term is : 7z^4
3 0
3 years ago
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Select all the ordered pairs (x, y) that are solutions to the linear equation 2x+3y=6
Anna35 [415]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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