When Isaac commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 44 minutes and a standard deviation of 5 minutes. Using the empirical rule, determine the interval that represents the middle 95% of his commute times.

[34,54]

Step-by-step explanation:

-The empirical rule states that the 95% of the sampled observations will fall within two standard deviations of the mean for a normally distributed population.

Where:

-Therefore. the middle 95% interval is calculated as:

Hence, the interval is [34,54]

answer: for each 3 girls there is 2 boys . 3: 2

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225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225