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kogti [31]
3 years ago
7

A random sample of house sizes in major city has a sample mean of

Mathematics
1 answer:
Kazeer [188]3 years ago
5 0

Answer:

A random sample of house sizes in major city has a sample mean of ¯x=1204.9 x ¯ = 1204.9 sq ft and sample standard deviation of s=124.6 sq ft. Use the Empirical Rule to determine the approximate percentage of house sizes that lie between 955.7 and 1454.1 sq ft.:

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40 percent of the students at rockledge middle school are musicians. 75 percent of those musicians have to read a sheet music wh
sweet-ann [11.9K]

Answer:


Step-by-step explanation:

40/100 musicians .75*40= 30


30 is to 100

as 38 is to x


30          38

----   =    ------              Cross multiply

100          x


30x=3800

divide by three to get

126 and 2/3

you can't split people, so it would be closer to about 127 students.


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4 years ago
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zaharov [31]
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3 years ago
Compute the value of the discriminant and give the number of real solutions of the Quadratic equation 3x^2+9x-1=0 PLSS HELPP
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Answer:

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Step-by-step explanation:

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3 years ago
Solve for W.<br><br> −(1/4w+8)+8=3
irina1246 [14]

Answer:

1/4 8

Step-by-step explanation:

because it is numbers that we multiply

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Answer:

1. 24  2. 20  3. 1.75(I think)  4. 11

Step-by-step explanation:

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