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borishaifa [10]
3 years ago
12

Will mark brainiest

Mathematics
2 answers:
maria [59]3 years ago
8 0
You should use a bar graph because that would work better
jeka57 [31]3 years ago
3 0
Here is your answer:

Your answer is that you should use a bar graph because...

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The temperatures at 6:00 am one morning in four cities are given below.
Andre45 [30]

Answer:

-9

Step-by-step explanation:

8 0
2 years ago
A professor gives her 100 students an exam; scores are normally distributed. The section has an average exam score of 80 with a
frozen [14]

Answer:

6.18% of the class has an exam score of A- or higher.

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 = 80, \sigma = 6.5

What percentage of the class has an exam score of A- or higher (defined as at least 90)?

This is 1 subtracted by the pvalue of Z when X = 90. So

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

Z = \frac{90 - 80}{6.5}

Z = 1.54

Z = 1.54 has a pvalue of 0.9382

1 - 0.9382 = 0.0618

6.18% of the class has an exam score of A- or higher.

4 0
2 years ago
HELP ASAP ILL GIVE YOU AN Additional 20 points PLEASE HELP IT"S DUE IN 10 mins
Brrunno [24]
Answer: 10

Explanation: you need to first find the area of the triangle which would be 2x2x1/2 then you find the area of the rectangle which is 4x2 so 8+2=10
7 0
2 years ago
What is the starting point of this function
Finger [1]

the starting point of the function is 0

6 0
3 years ago
3 11/15 + 4 7/5 = How to add fractions
kompoz [17]
If 3+11÷15=3.73333 then 4+7÷5 will equal 5.4,I think
5 0
3 years ago
Read 2 more answers
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