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Firdavs [7]
3 years ago
15

Solve for n. 583 = (n ÷ 10) + 3

Mathematics
1 answer:
makvit [3.9K]3 years ago
3 0

Answer:

Step-by-step explanation:

583=(n/10)+3

580=n/10

580*10=5800

check

583=(5800/10)+3

580=(5800/10)

580=580

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Parts being manufactured at a plant are supposed to weigh 65 grams. Suppose the distribution of weights has a Normal distributio
andrew-mc [135]

Answer:

0.64%.

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 normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, 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.

Mean of 75 grams and a standard deviation of 22 grams.

This means that \mu = 75, \sigma = 22

Sample of 144:

This means that n = 144, s = \frac{22}{\sqrt{144}} = 1.8333

More than 80 or less than 70:

Both are the same distance from the mean, so we find one probability and multiply by 2.

The probability that it is less than 70 is the pvalue of Z when X = 70. So

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

By the Central Limit Theorem

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

Z = \frac{70 - 75}{1.8333}

Z = -2.73

Z = -2.73 has a pvalue of 0.0032

2*0.0032 = 0.0064.

0.0064*100% = 0.64%

The probability is 0.64%.

3 0
3 years ago
Find the value of 70% of ₹300​
anzhelika [568]

Answer:

70% of 300 is 210

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PLZ HELP!!! What is (2-(-34)+56)/4?
Dominik [7]

Answer:

23

Step-by-step explanation:

Got u fam

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olga55 [171]

Answer:

A

Step-by-step explanation:

8 0
2 years ago
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Please send help.....Find the markup and the selling price of the following item. Round answers to the nearest cent. A typewrite
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A typewriter costing $75.00 marked up 40% on cost M = 40 and S = 105
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