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Anton [14]
1 year ago
11

During the summer months, the prices of nonsmoking rooms with a king-sized bed in hotels in a certain area are roughly normally

distributed with a mean of $131.80 and a standard deviation of $29.12. a travel agent randomly selects prices of nonsmoking rooms with a king-sized bed from 15 hotels in the area. what is the probability that their average cost will be more than $150
Mathematics
1 answer:
Mkey [24]1 year ago
4 0
<span>Population mean (u) = $131.80 Standard deviation (sd) = $29.12 Sample number (n) = 15 Sample mean = $150 Using Z score formula.. Z = (150 - 131.80)/ (29.12)/15^1/2 Z = 2.420 Area under the curve (alpha) with Z = 2.420 = 49.22 In percentage Alpha = 0.4922 Probability = 1-Alpha Probability = 1- 0.4922 = 0.5078</span>
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If you are constructing a 95% confidence interval for a normally distributed population when your sample size is 10, what value
Nuetrik [128]

This is something you'll need a T table for, or a calculator that can compute critical T values. Either way, we have n = 10 as our sample size, so df = n-1 = 10-1 = 9 is the degrees of freedom.

If you use a table, look at the row that starts with df = 9. Then look at the column that is labeled "95% confidence"

I show an example below of what I mean.

In that diagram, the row and column mentioned intersect at 2.262 (which is approximate). This value then rounds to 2.26

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1 year ago
Students at a private liberal arts college are classified as being freshmen, sophomores, juniors or seniors, and also according
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5 0
2 years ago
The New Haven High School cheerleaders got a t-shirt gun. The cheerleaders stand
nevsk [136]

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Therefore,

H = h(0) i.e h(t) at t = 0

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7 0
2 years ago
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Now, you would have us believe, she tucked the magic jug under her cloak,
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The quantity remaining in the jug was then 

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The same process works for length, volume, area, stones, money, anything.
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8 0
1 year ago
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