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Sonbull [250]
3 years ago
9

How can I use benchmarks to estimate 9/10+4/10

Mathematics
1 answer:
Jobisdone [24]3 years ago
4 0
I don’t kno how to estimate using benchmarks but I kno the exacts answer is 13/10 or 1.3
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A set of city temperatures in April are normally distributed with a mean of 19.7 degrees Celsius and a standard deviation of 2 d
Sati [7]

Answer:

19.77% of average city temperatures are higher than that of Cairo

Step-by-step explanation:

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.

In this question, we have that:

\mu = 19.7, \sigma = 2

What percentage of average city temperatures are higher than that of Cairo?

This is 1 subtracted by the pvalue of Z when X = 21.4.

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

Z = \frac{21.4 - 19.7}{2}

Z = 0.85

Z = 0.85 has a pvalue of 0.8023

1 - 0.8023 = 0.1977

19.77% of average city temperatures are higher than that of Cairo

6 0
3 years ago
The sum of three consecutive multiples of 7 is 63 find these multiples
Leto [7]

Let three consecutive multiples of 7 be 7x,7x+7 and 7x+14

6 0
3 years ago
Put these numbers in order from least to greatest.<br> -15-26/40, -15, 18/25, 15.85
Norma-Jean [14]
-15 26/40=<span>-15.65
-15
18/25=0.72
15.85
so From least to greatest
 -15.65, -15, 0.72, and 15.85



</span>
6 0
3 years ago
342 is the product of q and 214
Law Incorporation [45]

Answer:

What's the question?

Step-by-step explanation:

342 is the product of q and 214

7 0
2 years ago
Read 2 more answers
How many hours are in 10years
Artist 52 [7]
There is about 87658.1. there are 8765.81 in one year so multiply by ten to get 87658.1.
4 0
3 years ago
Read 2 more answers
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