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inessss [21]
3 years ago
13

According to the stem-and-leaf plot above, how many drivers travel above 60

Mathematics
1 answer:
frutty [35]3 years ago
3 0

Answer:

B. 14

Step-by-step explanation:

When reading a stem and leaf plot, the outside numbers represent the tens and the inside numbers represent the units.

For example, take 5 | 4.

5 is the ten and 4 is the unit, making it 54.

If you understand that, then I think you'll understand how I got my answer.

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In a recent year, grade 8 Washington State public school students taking a mathematics assessment test had a mean score of 281 w
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Answer:

The probability that the mean test score is greater than 290

P(X⁻ > 290 ) = 0.0217

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Mean of the Population (μ) = 281

Standard deviation of the Population = 34.4

Let 'X' be a random variable in Normal distribution

Given X = 290

Z = \frac{x -mean}{\frac{S.D}{\sqrt{n} } } = \frac{290-281}{4.44} = 2.027

<u><em>Step(ii):-</em></u>

<em> The probability that the mean test score is greater than 290</em>

P(X⁻ > 290 ) = P( Z > 2.027)

                    = 0.5 - A ( 2.027)

                   = 0.5 - 0.4783

                   = 0.0217

The probability that the mean test score is greater than 290

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Matt tried to evaluate 49 x 24 using partial products. His work is shown below
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Answer:

step 5

Step-by-step explanation:

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