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3 years ago

What 3 digits are in the units period 4083817

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

6 0

The 3 digits in the unit period is 817

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Jacob drove 8 miles east and then 15 miles north. how far is he from his starting point

Ilya [14]

Answer:

he is 23 miles northeast from this starting spot

Step-by-step explanation:

ok so you start with the directions and notice they are different but this equation worked in our favor because the directions are north and east then all you do is add 8 + 15 and you get 23 so its 23 miles northeast from starting position

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Step-by-step explanation:

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According to the Census Bureau, 3.36 people reside in the typical American household. A sample of 25 households in Arizona retir

Mila [183]

Answer:

We conclude that the mean number of residents in the retirement community household is less than 3.36 persons.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 3.36

Sample mean, $\bar{x}$ = 2.71

Sample size, n = 25

Alpha, α = 0.10

Sample standard deviation, s = 1.10

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 3.36\text{ residents per household}\\H_A: \mu < 3.36\text{ residents per household}$

We use One-tailed(left) t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{2.71 - 3.36}{\frac{1.10}{\sqrt{25}} } = -2.95$

Now, $t_{critical} \text{ at 0.10 level of significance, 24 degree of freedom } =-1.31$

Since,

$t_{stat} < t_{critical}$

We reject the null hypothesis and fail to accept it.

Thus, we conclude that the mean number of residents in the retirement community household is less than 3.36 persons.

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3 years ago