Answer:
![Z = -2.2](https://tex.z-dn.net/?f=Z%20%3D%20-2.2)
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:
![Z = \frac{X - \mu}{\sigma}](https://tex.z-dn.net/?f=Z%20%3D%20%5Cfrac%7BX%20-%20%5Cmu%7D%7B%5Csigma%7D)
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
![\mu = 3600, \sigma = 500](https://tex.z-dn.net/?f=%5Cmu%20%3D%203600%2C%20%5Csigma%20%3D%20500)
Use the information on the right to find the z-score of a 2,500 g baby.
This is Z when X = 2500. So
![Z = \frac{X - \mu}{\sigma}](https://tex.z-dn.net/?f=Z%20%3D%20%5Cfrac%7BX%20-%20%5Cmu%7D%7B%5Csigma%7D)
![Z = \frac{2500 - 3600}{500}](https://tex.z-dn.net/?f=Z%20%3D%20%5Cfrac%7B2500%20-%203600%7D%7B500%7D)
![Z = -2.2](https://tex.z-dn.net/?f=Z%20%3D%20-2.2)
Answer:
2008
Step-by-step explanation:
M = 48.81t + 304.30
M = 694.78 Solve for t
694.78 = 48.81t + 304.30 Subtract 304.30 from each side
390.48 = 48.81t Divide each side by 48.81
t = 390.48/48.81
t = 8.00 yr
=====
Year = 2000 + t
Year = 2000 + 8.00
Year = 2008
Military spending hit $694.78 billion at the end of 2008.
Answer: C
Step-by-step explanation:
If EG = 23 and EF = 12 then FG is equal to the length of 11.
Given that EG = 23 and EF = 12.
We are required to find the length of line segment FG.
We assume that EG and EF both are parts on a line.
A line segment is basically bounded by two distinct points on a line. Or we can say that a line segment is part of the line that connects two points. A line has no endpoints and extends to infinite points in both the direction but a line segment has two fixed or definite endpoints.
If EG=23 and EF=12 then, EG=EF+FG
FG=EG-EF
FG=23-12
FG=11
Hence if EG = 23 and EF = 12 then FG is equal to the length of 11.
Learn more about line segment at brainly.com/question/2437195
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