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Triss [41]
3 years ago
11

John plans to practice piano at least 2 1 2 212 hours this weekend. If he practices 1 1 6 116 hours on Saturday and 1 1 4 114 ho

urs on Sunday, will he meet his goal?
A. Yes; he will practice a total of 2 5/12 hours, and 2 5/12 > 2 1/2.


B. No; he will practice a total of 2 5/12 hours, and 2 7/12 < 2 1/2


C. Yes; he will practice a total of 2 7/12 hours, and 2 7/12 < 2 1/2


D. No; he will practice a total of 2 7/12 hours, and 2 7/12 < 2 1/2
Mathematics
1 answer:
Irina18 [472]3 years ago
7 0
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Marysya12 [62]

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x+17

Step-by-step explanation:

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2 years ago
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Which is bigger 3.3 or 0.8
jonny [76]
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3 years ago
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sample of 150 Publix cashiers showed a mean hourly wage of $ 8.00, with a standard deviation of $ 1. Give an interval that is li
Scorpion4ik [409]

Answer:

B. (6, 10)

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 8

Standard deviation = 1

Give an interval that is likely to contain about 95% of the sampled cashiers' hourly wages.

By the Empirical Rule, 95% of the sampled cashiers' hourly wages will be within 2 standard deviations of the mean, so from 2 standard deviations below the mean to two standard deviations above the mean

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So the correct answer is:

B. (6, 10)

4 0
3 years ago
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