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1 year ago

⋆ Help please! ⋆ This is a test! ⋆ No links! ⋆

Mathematics

1 answer:

Alina [70]1 year ago

5 0

Answer:

⋆ Help please! ⋆ This is a test! ⋆ No links! ⋆

Step-by-step explanation:

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A research center project involved a survey of 851 Internet users. It provided a variety of statistics on Internet users. (a) Th

kotykmax [81]

Answer:

The answer is "(0.9193924 , 0.9206076)".

Step-by-step explanation:

$\text{sample proportion}\ (SP) = 0.92\\\\\text{sample size}\ n = 851\\\\\text{Standard error} \ SE = \sqrt{\frac{(SP \times(1 - SP)}{n})}\\\\$

$= \sqrt{\frac{(0.92 \times (0.08)}{851})}\\\\= \sqrt{\frac{0.0736}{851}}\\\\= \sqrt{8.648\times 10^{-5}}\\\\=0.00031$

$\text{CI level is}\ 95\% \\\\\therefore\\\\ \alpha = 1 - 0.95 = 0.05\\\\\frac{\alpha}{2} = \frac{0.05}{2} = 0.025\\\\ Z_c = Z_{(\frac{\alpha}{2})} = 1.96$

Calculating the Margin of Error:

$ME = z_{c} \times SE\\\\$

$= 1.96 \times 0.00031\\\\ = 0.0006076$

$CI = (SP - z*SE, SP + z*SE)$

$= (0.92 - 1.96 * 0.00031 , 0.92 + 1.96 * 0.00031)\\\\ = (0.92 - 0.0006076 , 0.92 + 0.0006076)\\\\= (0.9193924 , 0.9206076)$

8 0

2 years ago

Compare 9/10 or 90percent'

Anni [7]

Step-by-step explanation:

9/10

=0.9

90%

=90/100

=0.9

Hence, 9/10 = 90 %

6 0

2 years ago

Three planes intersect in ?

Anuta_ua [19.1K]

Answer:

The air

Step-by-step explanation:

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2 years ago

Solve Multi-Step Equations, Part 2 - Instruction

Irina18 [472]

Answer:

g = -0.5

Step-by-step explanation:

Divide both sides by the numeric factor on the left side, then solve.

3 0

1 year ago

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What is 2.31 divided by 3?

Kobotan [32]

.77 is the answer. I hope this helps!

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2 years ago

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