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Mathematics 15 Online
OpenStudy (howard-wolowitz):

@nirmalnema

OpenStudy (howard-wolowitz):

2. What is the standard deviation of the following data set rounded to the nearest tenth? 300, 785, 670, 187, 760, 724 A. 571 B. 570 C. 259.1 D. 236.6

OpenStudy (howard-wolowitz):

These are for you ok! :)

OpenStudy (howard-wolowitz):

Hint: Its C or D

OpenStudy (nirmalnema):

its D

OpenStudy (howard-wolowitz):

Ok

OpenStudy (howard-wolowitz):

3. If z is a standard normal variable, find the probability. The probability that z is less than 1.13 0.8485 0.8907 0.1292 0.8708

OpenStudy (nirmalnema):

sorry i havent studied about standard normal variable,

OpenStudy (nirmalnema):

ok...

OpenStudy (howard-wolowitz):

4. A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is –2 standard deviations away from the mean. 20.1 43.0 61.6 28.4

OpenStudy (howard-wolowitz):

its -2 where it blocks it out

OpenStudy (nirmalnema):

43.0

OpenStudy (howard-wolowitz):

5. A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is +1 standard deviation away from the mean. 36.7 28.4 53.3 45.0

OpenStudy (howard-wolowitz):

Well I guess he gave up now you can try

pooja195 (pooja195):

where are you getting the questions from?

OpenStudy (howard-wolowitz):

I made them in my quiz generator

OpenStudy (howard-wolowitz):

its to pratice questions but its fun to give them to you to see if you can pass

OpenStudy (howard-wolowitz):

So do you wanna try?

pooja195 (pooja195):

\[μ + σ = 45 + 8.3 = 53.3 \]

OpenStudy (howard-wolowitz):

What that?

pooja195 (pooja195):

its called math xD

OpenStudy (howard-wolowitz):

but I cant see it

pooja195 (pooja195):

oh refresh

OpenStudy (howard-wolowitz):

ok your next question

OpenStudy (howard-wolowitz):

6. A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is +3 standard deviations away from the mean. 48.0 20.1 78.9 69.9

pooja195 (pooja195):

how about you post diffrent posts this looks like you are looking for answers to a quiz

OpenStudy (howard-wolowitz):

but you know im not... but fine

pooja195 (pooja195):

i know others dont you can get in trouble

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