EXTRA POINTS

1 answer:

5 0

If the problem want rational coefficient, then u need additional zero -1-√5 so you will expand a polynomial
(x+2)(x-2)²(x-1-√5)(x-1+√5). otherwise not necessary ie
(x+2)(x-2)²(x-1-√5).

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What is long divison

pochemuha

Answer:arithmetical division in which the divisor has two or more figures, and a series of steps is made as successive groups of digits of the dividend are divided by the divisor, to avoid excessive mental calculation.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

The distribution of heights of adult males has a mean of 69 inches and a standard deviation of 4 inches. A random sample of 36 a

Licemer1 [7]

Answer:

$P(\bar X >70)= P(Z>\frac{70-69}{\frac{4}{\sqrt{36}}})= P(Z>1.5)$

And for this case we can use the complement rule and the normal standard distribution of excel and we got:

$P(Z>1.5)=1-P(Z,1.5) = 1-0.933=0.0668$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

$X \sim N(69,4)$