3 years ago

CAN SOMEONE PLEASE HELP ME WITH THIS QUICKLY!!!!!!!!!!!!!!!

Mathematics

1 answer:

Korvikt [17]3 years ago

5 0

I think it’s the 3rd one i’m sorry if i am am wrong

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Whats 69.2 as a fraction ??

Vladimir79 [104]

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Recall the chapter example which described the fact that the mean IQ in large, diverse populations is 100 and the standard devia

vova2212 [387]

Answer:

The margin of error for the 99% confidence level for this sample is ±2.23.

None of the given figures is close to the answer:

E. None of the above

Step-by-step explanation:

margin of error (ME) around the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic of the 99% confidence level (2.576)

s is the population IQ standard deviation (15)

N is the sample size (300)

Using these numbers we get:

ME= $\frac{2.576*15}{\sqrt{300} }$ ≈ 2.23

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2 years ago

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Answer:

$\£8:\£32$

Step-by-step explanation:

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$=8$

$1:4$

$1 \times 8:4 \times 8$

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Which expression has value of 15 when = 12?

frosja888 [35]

Answer:

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