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MakcuM [25]
3 years ago
6

Pls help me with this questions. Look at the image

Mathematics
1 answer:
Andrei [34K]3 years ago
5 0
21 is 19 get ur facts straight
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A simple random sample of 100 batteries is selected from a process that produces batteries with a mean lifetime of 32 hours and
Brrunno [24]

Answer:

.b. It is one‐half as large as when n = 100.

Step-by-step explanation:

Given that a  simple random sample of 100 batteries is selected from a process that produces batteries with a mean lifetime of 32 hours and a standard deviation of 3 hours.

i.e. s = 0.3

we obtain se of sample by dividing std devitation by the square root of sample size

i.e. s= \frac{3}{\sqrt{n} }

when n =100 this = 0.3 and

when n =400 this equals 0.15

We find that when sample size is four times as large as original, std deviation becomes 1/2 of the original

Correction option is

.b. It is one‐half as large as when n = 100.

7 0
3 years ago
What is the linear function equation represented by the graph?
alexdok [17]
Slope is 2/3
intercept is (0,3)

y=2/3 x + 3
8 0
3 years ago
Evaluate the following expressions using the order of operations
Ahat [919]
7*8-4(6-2)+18
56-4(4)+18
56-16+18
40+18
58

6^2-(8*3)+2^2(7*3)
36-24+4(21)
12+84
96
7 0
3 years ago
I'm don't understand polygons, as you should know
lawyer [7]

Answer:

540°

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here n = 5, thus

sum = 180° × 3 = 540°

8 0
3 years ago
Read 2 more answers
Negative 22 minus 16
Maru [420]
The answer is -38.

-22-16=-38
4 0
3 years ago
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