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3 years ago

Please help me with this question! // i didn’t mean to select d

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

5 0

Answer:

Step-by-step explanation:

on visits they is not any kind of pattern it is oppisite or negative with no Relationship and the books are not either

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A 95 percent confidence interval for the mean of a population is to be constructedand must be accurate within 0.3 unit. A prelim

jarptica [38.1K]

Answer:

B. 359

Step-by-step explanation:

Given that:

The margin of error (e) must be within 0.3 unit, The standard deviation (σ) = 2.9 and the the confidence level = 95% = 0.95

α = 1 =0.95 = 0.05

$\frac{\alpha}{2}=\frac{0.05}{2}=0.025$

The z score of 0.025 corresponds to the z score of 0.0475 (0.5 - 0.025) which can be gotten from the normal probability table.

Therefore: $z_\frac{\alpha}{2}= z_{0.025}=1.96$

The formula for the margin of error is given by:

$e=z_{0.025}\frac{\sigma}{\sqrt{n} } \\Substituting:\\0.3=1.96*\frac{2.9}{\sqrt{n} } \\\sqrt{n}=\frac{1.96*2.9}{0.3}\\\sqrt{n} =18.95\\ n=18.95^2=359$

Therefore the smallest sample size (n) is 359

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3 years ago

I WILL GIVE 30 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT

pav-90 [236]

brainly.com/question/11989726 click the link change your country to Philippines you will the answer there

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2 years ago

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-2 + y ≤ -3 on number line

liq [111]

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4 years ago

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vfiekz [6]

The answer to this is 2

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3 years ago

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hi! like almost everyone else on here, I'm probably gonna fail so uh help, please? In your own words explain how to multiply/div

Radda [10]

Answer:

It does not matter whether you multiply the radicands or simplify each radical first. You multiply radical expressions that contain variables in the same manner. As long as the roots of the radical expressions are the same, you can use the Product Raised to a Power Rule to multiply and simplify.

Step-by-step explanation:

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3 years ago