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Anestetic [448]
3 years ago
8

Alther.† Suppose a small group of 15 Allen's hummingbirds has been under study in Arizona. The average weight for these birds is

x = 3.15 grams. Based on previous studies, we can assume that the weights of Allen's hummingbirds have a normal distribution, with σ = 0.24 gram.
(a) Find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error? (Round your answers to two decimal places.)
Mathematics
1 answer:
fgiga [73]3 years ago
6 0

Answer:

Step-by-step explanation:

Loop

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30,27,24,21,19,16,13,10,7,4,1,-2,-5,-8,-11,-14,-17,-20,-23,-26
just take away 3 from each number
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Which two numbers have a product of 18 and a sum of -11?
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Answer:

X=-8

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Step-by-step explanation:

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3 years ago
Bob drove 30 and one third miles towards his house in one third an hour. About how long will the entire 100 mile trip take at th
Gemiola [76]

It would take 1\frac{9}{91} hour to complete the entire trip.

Step-by-step explanation:

Given,

Distance covered = 30\frac{1}{3} = \frac{91}{3} miles

Time taken =\frac{1}{3} hour

We know that;

Distance = Speed * Time

\frac{91}{3} = Speed*\frac{1}{3}

Multiplying both sides by 3

3*\frac{91}{3} = Speed*\frac{1}{3}*3

91 = Speed

Bob was driving at 91 miles per hour.

Now,

Distance to cover = 100 miles

Time required = x

Distance = Speed * Time

100=91x\\91x=100

Dividing both sides by 91

\frac{91x}{91}=\frac{100}{91}\\x=1\frac{9}{91}

It would take 1\frac{9}{91} hour to complete the entire trip.

Keywords: fraction, distance

Learn more about distance at:

  • brainly.com/question/10772025
  • brainly.com/question/10879401

#LearnwithBrainly

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3 years ago
Given that the 2016 median income for California was $67,739, find the income index for California with the same reference as th
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Answer:

126.4 (rounded to the nearest tenth)

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67739*100=53558X

6773900=53558X

6773900/53558=x

126.4070314=X

Use Arizonia as a reference index point. Since it is set at 100, you can put the median income over 100 is equal to California median income over x. Then solve for X.

8 0
3 years ago
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