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2 years ago

8

What is the slope of the line

1 answer:

galina1969 [7]2 years ago

6 0

-8/5

Rise over run aka how many it goes up/down over how many it goes across

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2 years ago

Help……..-What is the rule for the function that is graphed?

klemol [59]

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(WORK SHOWN BELOW)

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1 year ago

Question 3 (1 point)

Nonamiya [84]

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2 years ago

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2 years ago

Read 2 more answers

Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8

drek231 [11]

Answer:

95% Confidence interval: (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, $\bar{x}$ = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

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

Putting the values, we get,

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

$100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)$

(96.06,103.94) is the 95% confidence interval for the population mean test score.

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2 years ago