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sergey [27]
3 years ago
11

Write a number that has four digits with the same number in all places such as 4444 circle the digit with the greatest value und

erline the digit with the least value
Mathematics
1 answer:
joja [24]3 years ago
4 0
For example you can take the number 7 7 7 7

(7)77{7}

The first seven is the greatest it's 7,000

The last seven is the least its 7

HOPE THIS HELPS!!!
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Suppose the horses in a large stable have a mean weight of 1467lbs, and a standard deviation of 93lbs. What is the probability t
krok68 [10]

Answer:

0.5034 = 50.34% probability that the mean weight of the sample of horses would differ from the population mean by less than 9lbs if 49 horses are sampled at random from the stable

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:

\mu = 1467, \sigma = 93, n = 49, s = \frac{93}{\sqrt{49}} = 13.2857

What is the probability that the mean weight of the sample of horses would differ from the population mean by less than 9lbs if 49 horses are sampled at random from the stable?

This is the pvalue of Z when X = 1467 + 9 = 1476 subtracted by the pvalue of Z when X = 1467 - 9 = 1458.

X = 1476

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

By the Central Limit Theorem

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

Z = \frac{1476 - 1467}{13.2857}

Z = 0.68

Z = 0.68 has a pvalue of 0.7517

X = 1458

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

Z = \frac{1458 - 1467}{13.2857}

Z = -0.68

Z = -0.68 has a pvalue of 0.2483

0.7517 - 0.2483 = 0.5034

0.5034 = 50.34% probability that the mean weight of the sample of horses would differ from the population mean by less than 9lbs if 49 horses are sampled at random from the stable

5 0
3 years ago
Which of the following is a negative aspect of wind power?
harina [27]

Answer:

C is the answer, as wind turbines are more expensive

8 0
2 years ago
Simplify the expression. (p^9)^−2
EastWind [94]
<span><span> p9/p3</span> </span>Final result :<span> p6 </span>Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "p3"   was replaced by   "p^3".  1 more similar replacement(s).

Step by step solution :<span>Step  1  :</span><span> p9 Simplify —— p3 </span>Dividing exponential expressions :

<span> 1.1 </span>  <span> p9</span> divided by <span>p3 = p(9 - 3) = p6</span>

Final result :<span> p<span>6</span></span>
6 0
3 years ago
Read 2 more answers
Lisa is a fitness instructor. For one month, she recorded the number of people who attended her aerobics class. She then used he
valina [46]
I’m pretty sure it a
4 0
3 years ago
What the answer for B?
LenKa [72]
The answer is 49.89
hope this helped:)
8 0
3 years ago
Read 2 more answers
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