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Tom [10]
3 years ago
10

Write a decimal between 0.5 and 0.75 then write it as a fraction in simplest form

Mathematics
2 answers:
Gnesinka [82]3 years ago
8 0
You can do anything between .50 and .75. For example .55. .55=55%
.55 also equals 11/20 as a fraction
IgorLugansk [536]3 years ago
3 0
Hello,

An example of a decimal between 0.5 and 0.75 is 0.6, written as 3/5 as a fraction in its simplest form.

Hope this helps!

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Ber [7]
What kind of math is this
8 0
3 years ago
A study investigating the relationship between age and annual medical expenses randomly samples 400 individuals in a city. It is
ICE Princess25 [194]

Answer:

The probability is 0.789

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

\sigma = 16, n = 400, s = \frac{16}{\sqrt{400}} = 0.8

Find the probability that the mean age of the individuals sampled is within one year of the mean age for all individuals in the city.​

Using \mu = 30, this is the pvalue of Z when X = 31 subtracted by the pvalue of Z when X = 29. So

X = 31

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{31 - 30}{0.8}

Z = 1.25

Z = 1.25 has a pvalue of 0.8944

X = 29

Z = \frac{X - \mu}{s}

Z = \frac{29 - 30}{0.8}

Z = -1.25

Z = -1.25 has a pvalue of 0.1056

0.8944 - 0.1056 = 0.7888

Rounded to three decimal places, 0.789

The probability is 0.789

4 0
3 years ago
Read 2 more answers
Convert to a fraction in simplest terms: .45
photoshop1234 [79]

Answer:

9/20

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the simplest form of the following expression? -(8d-3w)
Soloha48 [4]

Answer:

-8d+3w is the simplest form

4 0
3 years ago
Read 2 more answers
The sum of the measures of three adjacent angles is 150°. The measures of the angles are in the ratio of ​1:2:3. What is the mea
stellarik [79]

Answer:

14•4°

step by step explanation:

ratio=1:2:3=6

angles in degree=150°

6/150°×360°(simplify)

6/5°×12°

=72°/5°

=14•4°

The largest angle=14•4°

Thanks hope it helps

8 0
3 years ago
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