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lana [24]
3 years ago
15

I wanna know an integer greater than -3 but less than 3

Mathematics
2 answers:
timama [110]3 years ago
7 0
Anything between -3≤x<3
Those integers can be -2,-1,0,1 or 2
Dimas [21]3 years ago
4 0
Anything in between
-3<0<3
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Solve for the value of x<br> A) 12<br> B) 42<br> C) -12<br> D) -42
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The angles of a triangle will always add up to be 180 degrees total.

x + 82 + x + 82 + 40 = 180
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Use the confidence level and sample data to find a confidence interval for estimating the population μ. Round your answer to the
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Answer: Choice A.)   88.2 < μ < 93.0

=============================================================

Explanation:

We have this given info:

  • n = 92 = sample size
  • xbar = 90.6 = sample mean
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Because n > 30 and because we know sigma, this allows us to use the Z distribution (aka standard normal distribution).

At 99% confidence, the z critical value is roughly z = 2.576; use a reference sheet, table, or calculator to determine this.

The lower bound of the confidence interval (L) is roughly

L = xbar - z*sigma/sqrt(n)

L = 90.6 - 2.576*8.9/sqrt(92)

L = 88.209757568781

L = 88.2

The upper bound (U) of this confidence interval is roughly

U = xbar + z*sigma/sqrt(n)

U = 90.6 + 2.576*8.9/sqrt(92)

U = 92.990242431219

U = 93.0

Therefore, the confidence interval in the format (L, U) is approximately (88.2, 93.0)

When converted to L < μ < U format, then we get approximately 88.2 < μ < 93.0 which shows that the final answer is choice A.

We're 99% confident that the population mean mu is somewhere between 88.2 and 93.0

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