How else can the ratio 4⁄5 be written? A. 5⁄4 B. .2 C. 5:4 D. 4:5

Mathematics

2 answers:

dmitriy555 [2]3 years ago

5 0

Answer:

The answer is the option D

$4:5$

Step-by-step explanation:

we know that

the ratio $\frac{a}{b}$ can be written in the form $a:b$

therefore

in this problem

$\frac{4}{5}$ can be written in the form $4:5$

ankoles [38]3 years ago

4 0

The ratio 4/5 can also be written as (D.4:5)

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A researcher is interested in the lengths of brook trout, which are known to be approximately Normally distributed with mean 80

aliya0001 [1]

Answer:

$P(X$

And we can find this probability with the normal standard distirbution or excel and we got:

$P(z$

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 lenghts of a population, and for this case we know the distribution for X is given by:

$X \sim N(80,5)$