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Studentka2010 [4]
3 years ago
5

Which options could be the next step in simplifying this expression? 5 • (2 + 4) Choose exactly two answers that are correct. A.

5 • 2 + 5 • 4 (use the distributive property) B. (5 • 2) + 4 (use the associative property) C. 5 • 2 + 4 (use the distributive property) D. 5 • 6 (use order of operations)
Mathematics
1 answer:
Pavel [41]3 years ago
5 0
5 * (2 + 4)

5 * 2 + 5 * 4 (the distributive property)
5 * 6 (order of operations)
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Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her universi
romanna [79]

Answer: The p-value is 0.154.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis :

H_0:\mu=20

Alternate hypothesis :

H_1:\mu

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Sample standard deviation = 4.3 hours

Sample size n = 35

So, test statistic would be

z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{18.5-20}{\dfrac{4.3}{\sqrt{35}}}\\\\z=\dfrac{-1.5}{0.726}\\\\z=-2.066

So, the  p value would be 0.154.

Hence, the p-value is 0.154.

4 0
3 years ago
What is the area of a trapezoid? 47,45,65
Masteriza [31]
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2 years ago
+ → Co
saveliy_v [14]

Answer: 43% increase

Step-by-step explanation:

You are welcome :)

7 0
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