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2 years ago

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Find a 90% confidence interval for the population standard deviation for the weights of men if a sample of 14 randomly selected

men have a sample mean of 156.9 pounds and a sample standard deviation of 11.1 pounds. Assume that the population has a normal distribution.

1 answer:

kenny6666 [7]2 years ago

5 0

Who do you think got the better deal in the Compromise of 1850, the North or the South? Why?

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A stack of blocks is 12.3 inches tall.If there are 10 blocks stacked one on top of the other, how tall is each block

timofeeve [1]

12.3/10=1.23

Answer 1.23

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2 years ago

What is half of seven in a whole number

Nikitich [7]

0.7 / 100 = 0.007 or 0.007 x 100 = 0.7 hope this helps

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2 years ago

Iliana was part of a group that was working on changing 0.4 repeated to a fraction. Each member of the group had a different ans

amm1812

$\bf 0.444444444\overline{4}\impliedby \textit{and keeps on going}\\\\
-------------------------------\\\\
\textit{let's say }\boxed{x=0.444444444\overline{4}}\quad \textit{ thus }10\cdot x=4.44444444\overline{4}
\\\\\\
\textit{wait a minute! }4.44444444\overline{4}\textit{ is really just }4+0.444444444\overline{4}$

$\bf \textit{but we know }x=0.444444444\overline{4} \textit{ so then }4+0.444444444\overline{4}=\boxed{4+x}
\\\\\\
\textit{wait a second! }10\cdot x\implies 10x=4.444444444\overline{4}=4+x
\\\\\\
thus\qquad 10x=4+x\implies 10x-x=4\implies 9x=4\implies \boxed{x=\cfrac{4}{9}}$

you can check in your calculator.

anyhow, to get the "recurring decimal to fraction", you start by setting to some variable, "x" in this case, then move the repeating part to the left of the point by multiplying it by some power of 10, and then do the equating.

3 0

3 years ago

Read 2 more answers

Shannon has 1 nickel, 2 dimes, and 5 unknown coins totaling $0.81. What kind of coins does Shannon have and how many are there o

AlekseyPX

Answer:

The 5 unknown are 1 quarter, 3 dimes, and 1 penny.

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2 years ago

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In the past year Pablo watched 12 movies that he thought were very good. He watched 60 movies over the whole year. Of the movies

kumpel [21]

It would be 20 percent, I believe. First you would put it into a fraction of 12\60, then you would simplify that into 3\15 then divide as shown. You end up with .2 which would be 20 percent.

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2 years ago