Please help me fast! I cant figure this out. PLEASE!!!!

Mathematics

1 answer:

ziro4ka [17]3 years ago

6 0

c times a equals b a ssspppppppspspspspspsp

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A group of 65 baseball players were surveyed about which hand they favor for batting. The data from the survey are shown in the

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Answer:

A = 7 . B = 31 . C = 28 . D = 13 . E = 65

Step-by-step explanation:

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3 years ago

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Which equation shows an example of the associative property of addition? (–7 + i) + 7i = –7 + (i + 7i) (–7 + i) + 7i = 7i + (–7i

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The correct answer is the first option, which is:

(–7 + i) + 7i = –7 + (i + 7i)

The explanation is shown below:

1. By definition, in the associate property of addition you summ the number by grouping them with parenthesis, without matter where you use those parenthesis.

2. Therefore, as you can see, you can obtain the result of the addition by agruping the numbers <span>(–7 + i) + 7i or –7 + (i + 7i)</span> .

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Suppose a set of test scores is appproximately bell-shaped, with a mean of 68 and a range of 54. (a) The minimum test score is a

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Answer:

a.) Minimum test score = 41

Maximum test score = 95

b.)An approximate value of the standard deviation is 9.

Step-by-step explanation:

The given set of test scores is approximately bell shaped.

The mean of the test scores, $\mu$ = 68

The range of the data set = 54.

a.) i.) Minimum test score = $\mu - \frac{range}{2} = 68 - \frac{54}{2} = 68 - 27 = 41$

ii.) The maximum test score = $\mu + \frac{range}{2} = 68 + \frac{54}{2} = 68 + 27 = 95$

b.) From the 68-95-99.7 rule, also known as the Empirical rule, tell us that an approximation of the range is 3 standard deviations either way from the mean. So from this rule we can say that the minimum can also be found from $\mu - 3\sigma$ and the maximum can also be approximated as $\mu + 3\sigma$ .