3 years ago

Emma starts at one end of a 45-mile-long bike trail. After

Mathematics

1 answer:

aleksley [76]3 years ago

8 0

Answer:

She has already reached the end of the trail.

Step-by-step explanation:

216 is a greater number than 45 miles

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Fiesta28 [93]

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3 years ago

"A sample of 30 randomly selected oranges was taken from a large population, and their diameters were measured. The mean diamete

Yuki888 [10]

Answer:

The lower bound of the interval is 88.9mm and the upper bound is 93.1mm.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.85}{2} = 0.075$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

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Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

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$M = 1.44*\frac{8}{\sqrt{30}} = 2.1$

The lower end of the interval is the sample mean subtracted by M. So it is 91 - 2.1 = 88.9mm.

The upper end of the interval is the sample mean added to M. So it is 91 + 2.1 = 93.1 mm

The lower bound of the interval is 88.9mm and the upper bound is 93.1mm.

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3 years ago

Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hou

a_sh-v [17]

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1.25 inspections in 1 hour

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4 years ago

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