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Mathematics

1 answer:

Colt1911 [192]3 years ago

8 0

Answer:

???

Step-by-step explanation:

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Factor. 2x2−3x−5 (2x+5)(x−1) (x−5)(2x+1) (2x−5)(x−1) (2x−5)(x+1)

Likurg_2 [28]

Answer:

Step-by-step explanation

You do the brackets first
The answer to the brackets is : 0
Because you also times the others by 0 the answer must be 0.

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According to a study done by a university student, the probability a randomly selected individual will not cover his or her mou

Anon25 [30]

Let X be a discrete binomial random variable.
Let p = 0.267 be the probability that a person does not cover his mouth when sneezing.
Let n = 18 be the number of independent tests.
Let x be the number of successes.
So, the probability that the 18 individuals, 8 do not cover their mouth after sneezing will be:

a) P (X = 8) = 18! / (8! * 10!) * ((0.267) ^ 8) * ((1-0.267) ^ (18-8)).
P (X = 8) = 0.0506.

b) The probability that between 18 individuals observed at random less than 6 does not cover their mouth is:

P (X = 5) + P (X = 4) + P (X = 3) + P (X = 2) + P (X = 1) + P (X = 0) = 0.6571.

c) If it was surprising, according to the previous calculation, the probability that less than 6 people out of 18 do not cover their mouths is 66%. Which means it's less likely that more than half of people will not cover their mouths when they sneeze.

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3 years ago

The CBS’ television show 60 Minutes has been successful for many years. That show recently had a share of 20, which means that a

xxMikexx [17]

Given:
p = 20% = 0.2, sample proportion
n = 5000, sample size.
Confidence level = 95%

The confidence interval is
(p - 1.96k, p + 1.96k)
where
$k=\sqrt{ \frac{p(1-p)}{n} }=\sqrt{ \frac{0.2*0.8}{5000}} =0.00566$

Therefore the 95% confidence interval is
(0.1943, 0.2057) = (19.4%, 20.6%)

Answer: The 95% confidence interval is (19.4%, 20.6%)

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4 years ago

Joseph is a real estate agent who sold a home for $360,000. If his commission was $27,000, what was his exact rate of commission

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None of these choices are correct.

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Find the sum of 37, 9, 663, 1198, and 45 a. 1952 b. 1142 c. 942 d. 3952 e. 2722

frez [133]

The answer is 1952 because you have to add all of the numbers together

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