3 years ago

ANSWER PLEASE 15 POINTS!!!!!

Mathematics

2 answers:

vodka [1.7K]3 years ago

5 0

Answer:

Step-by-step explanation:

this is the correct answer trust

madreJ [45]3 years ago

4 0

Answer:

I think its c because it's less the a 90° angle

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jenyasd209 [6]

Answer:

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Step-by-step explanation:

there's 52 weeks in a year.

since ken drives 400km every week

400 x 52 = 20800

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3 years ago

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umka21 [38]

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krek1111 [17]

Answer:

The lower limit of 95% confidence interval is 99002.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $100,000

Sample mean, $\bar{x}$ = $111,000

Sample size, n = 36

Alpha, α = 0.05

Population standard deviation, σ = $36,730

First, we design the null and the alternate hypothesis

$H_{0}: \mu = \$100,000\\H_A: \mu \neq \$100,000$

We have to find the lower limit of the 95% confidence interval.

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

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Step-by-step explanation:

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