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AysviL [449]
3 years ago
11

Question 4 (1 point)

Mathematics
1 answer:
AnnZ [28]3 years ago
8 0
The answer is test scores
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The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds
Feliz [49]

Answer:

0.3811 = 38.11% probability that he weighs between 170 and 220 pounds.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

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 question, we have that:

\mu = 200, \sigma = 50

Find the probability that he weighs between 170 and 220 pounds.

This is the pvalue of Z when X = 220 subtracted by the pvalue of Z when X = 170.

X = 220

Z = \frac{X - \mu}{\sigma}

Z = \frac{220 - 200}{50}

Z = 0.4

Z = 0.4 has a pvalue of 0.6554

X = 170

Z = \frac{X - \mu}{\sigma}

Z = \frac{170 - 200}{50}

Z = -0.6

Z = -0.6 has a pvalue of 0.2743

0.6554 - 0.2743 = 0.3811

0.3811 = 38.11% probability that he weighs between 170 and 220 pounds.

6 0
4 years ago
Based on the family the graph below belongs to, which equation could represent the graph ?
victus00 [196]

Firstly this looks like translated log function graph

  • y=logx

log1=0

As per graph the graph is pulled some inwards y axis but little bit

  • y=log2x

Usually log x leaves y axis at -1 but here it leaves at +2

So

y axis is moved upwards (+3)

Last function

  • y=log(2x)+3

8 0
2 years ago
So i need a example with a bar model and equations
Sholpan [36]
A bar model is (2)(2)(2)(2) that would be 4+2=6 and you could do 6+4=10 

4 0
4 years ago
A scuba diver dove 950 feet below the surface in 19 minutes. what integer represents the average rate of change for this dive
SIZIF [17.4K]
You can divide 950 by 19 to get the speed in ft/min:
950/19 = 50 ft/min

Hope this helps! :)
7 0
4 years ago
30 PT AND BRAINLIEST
oee [108]
If the design is the cube in the second answer then it would have a surface area of 25 cm per face of the cube because to get the surface are you would multiple side by side of a face and then to get the full cubes surface area multiple one faces surface area by six because the cube has six faces and to get the volume you cube the side length of 5cm to get 125cm cubed. Hope this helps.
3 0
3 years ago
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