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nordsb [41]
4 years ago
8

The mean value of land and buildings per acre from a sample of farms is $1400, with a standard deviation of $100. The data set h

as a ball-shaped distribution. Using the empirical rule, determine which of the following farms, whose land and
building values per acre are given, are unusual (more than two standard deviations from the mean). Are any of the data values very unusual (more than three standard deviations from the mean)?
$1322 51646 $1270 $1089 51305 51275
Which of the farms are unusual
Mathematics
1 answer:
Harman [31]4 years ago
3 0

Answer:

B, D, and F :)

Step-by-step explanation:

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Please help me on this it’s due
olya-2409 [2.1K]
<h3>Answer:  5 cakes</h3>

================================================

Explanation:

Let's start off converting the mixed number 12 & 1/4 to an improper fraction.

a \frac{b}{c} = \frac{a*c+b}{c}\\\\12 \frac{1}{4} = \frac{12*4+1}{4}\\\\12 \frac{1}{4} = \frac{49}{4}\\\\

Do the same for the other mixed number 2 & 1/3.

a \frac{b}{c} = \frac{a*c+b}{c}\\\\2 \frac{1}{3} = \frac{2*3+1}{3}\\\\2 \frac{1}{3} = \frac{7}{3}\\\\

-----------------------

From here, we divide the two fractions. I converted them to improper fractions to make the division process easier.

\frac{49}{4} \div \frac{7}{3} = \frac{49}{4} \times \frac{3}{7}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{49\times 3}{4\times 7}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{7\times 7\times 3}{4\times 7}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{7\times 3}{4}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{21}{4}\\\\

The last step is to convert that result to a mixed number.

\frac{21}{4} = \frac{4*5+1}{4}\\\\\frac{21}{4} = \frac{4*5}{4}+\frac{1}{4}\\\\\frac{21}{4} = 4+\frac{1}{4}\\\\\frac{21}{4} = 5 \frac{1}{4}\\\\

Note that 21/4 = 5.25 and 1/4 = 0.25 to help check the answer.

-----------------------

Therefore, she can make 5 cakes. The fractional portion 1/4 is ignored since we're only considering whole cakes rather than partial ones.

3 0
3 years ago
What is 96\3 as a decimal please help thanks
spayn [35]
3 goes into 96 32 times, so 96/3=32. There is no decimal (unless you insist on including one, then it'd be 32.0) because 3 goes into 96 perfectly.
7 0
3 years ago
All 3 of these plz ??
LenaWriter [7]
Number 3 / last one is -49 hoped I helped you
6 0
3 years ago
Pleaseee help im really confused
GuDViN [60]

Answer:

431

Step-by-step explanation:

you take 7.75 divide it by 100 and then times it by 400

3 0
3 years ago
Danny wants to improve his technique for punting the football, so he devises an experiment to help. He goes to the field with 5
Triss [41]

Answer should be (A)

This is because the variation factors from one day to another may significantly  influence the distances the football goes. Among these factors are: the weather and Danny's condition. For example: wind strength, wind direction, any rain influences the skid, etc. Condition example could be: Danny is more tired on one of the days and can't kick as strong.

The other choices do not relate to variability.

8 0
4 years ago
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