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zheka24 [161]
3 years ago
14

The manager of a warehouse would like to know how many errors are made when a product’s serial number is read by a bar-code read

er. Six samples are collected of the number of scanning errors: 36, 14, 21, 39, 11, and 2 errors, per 1,000 scans each.
What is the mean and standard deviation for these six samples?
Mathematics
1 answer:
stira [4]3 years ago
4 0
The mean of the answer is 20.5 because you add all of the number together and divide by 6 because there's 6 numbers. 
I'm sorry, but I don't know how to do the standard deviation... 
Hope this helped!
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1/3x + 8x^4 - 2/3x^2 - x in standard form
leva [86]

Answer:

8x^{4}-2/3x^{2}-2/3x

Step-by-step explanation:

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Read 2 more answers
Kristen is 64 inches tall, and she stands 12 feet away from a streetlight. If she casts an 82-inch-long shadow, how tall is the
o-na [289]

Answer:

176.39 inches or

14.70 feet

Step-by-step explanation:

Consider the right triangle made by Kristen, ground and shadow.

This triangle has one leg as 64 inches.

Next consider the right triangle formed by street light, ground upto shadow tip.

The two triangles have common angle of elevation and also another angle as 90 degrees.

Hence the two triangles would be similar

Also if A is the angle made by hypotenuse of both triangles with the ground we have

tanx=\frac{64}{82}

This value also equals by bigger triangle as

tanx=\frac{h}{82+12(12)}=\frac{h}{226}

From these two we get

h = height of street light =\frac{226(64)}{82} =176.39

6 0
3 years ago
Which expressions are equivalent to 6\cdot6\cdot6\cdot6\cdot66⋅6⋅6⋅6⋅66, dot, 6, dot, 6, dot, 6, dot, 6 ?
Svetach [21]

Answer:

6^5

Step-by-step explanation:

add them up and put as exponent

7 0
3 years ago
Find the maximum value of y = -2(x - 4)2 - 6.
pashok25 [27]

Answer:

-2(-2)

Step-by-step explanation:

-2(x--4)2

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different sign subtract

-2(-2)

Hope this helps :D

5 0
3 years ago
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