2 years ago

In the data set below what is the mean absolute deviation 41,56,38,45,55,51,52

Mathematics

1 answer:

saveliy_v [14]2 years ago

8 0

All of these numbers are making me crazy

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2 years ago

H is directly proportional to the square root of p h= 5.4 when p = 1.44 find h when p =2.89

LenKa [72]

Answer:

h=7.65

Step-by-step explanation:

H is directly proportional to the square root of p;

Let k be the constant of proportionality;

Means h=k√p

This means for corresponding points of h and p such that (h1,p1) and (h2,p2) we have;

h1/√p1=h2/√p2

Let h= 5.4 when p = 1.44 and h when p =2.89 be respectively (h1,p1) and (h2,p2)

So that

5.4/√1.44=h/√2.89

5.4/√1.44 ×√2.89 = h

7.65= h

h=7.65

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2 years ago

While analyzing the landing procedures of airplanes, George noted one plane at an altitude of 5,000 feet descending at a rate of

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Oscar recorded the amount of his monthly electric bill for the first 11 months of the year. An ordered list of the amount in dol

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2 years ago

The lengths of text messages are normally distributed with an unknown population mean. A random sample of text messages is taken

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Answer:

95% of the text messages have length between 23 units and 47 units.

Step-by-step explanation:

We are given the following in the question:

The lengths of text messages are normally distributed.

95% confidence interval:

(23,47)

Thus, we could interpret the confidence interval as:

About 95% of the text messages have length between 23 units and 47 units.

By Empirical rule for a normally distributed data, about 95% of data lies within 2 standard deviations of mean , thus we can write:

$\mu - 2\sigma = 23\\\mu +2\sigma = 47\\\Rightarrow \mu = 35\\\Rightarrow \sigma = 6$

Thus, the mean length of text messages is 23 units and standard deviation is 6 units.

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