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attashe74 [19]
3 years ago
8

Find the 6th term of the arithmetic sequence -4, 0, 4, 8,

Mathematics
2 answers:
bezimeni [28]3 years ago
4 0

Answer:

a

Step-by-step explanation:

-4,0,4,8,12,16

Nastasia [14]3 years ago
3 0
A. because the arithmetic sequence increases by 4 and if u keep adding 4 till the 6th term, u will get 16.

4n-8

N being the Nth term
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You plan to conduct a marketing experiment in which students are to taste one of two different brands of soft drink. Their task
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the probability is 90% that the sample percentage is contained within 45.5% and 54.5% symmetric limits of the population percentage.

Step-by-step explanation:

From the given information:

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∴

The population proportion p_o = 1/2 = 0.5

NOW;

\sigma _p = \sqrt{\dfrac{p_o(1-p_o)}{n}}

\sigma _p = \sqrt{\dfrac{0.5(1-0.5)}{200}}

\sigma _p = \sqrt{\dfrac{0.5(0.5)}{200}}

\sigma _p = \sqrt{\dfrac{0.25}{200}}

\sigma _p = \sqrt{0.00125}

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However, in order to determine the symmetrical limits of the population percentage given that the z probability is 90%.

we use the Excel function as computed as follows in order to determine the z probability  = NORMSINV (0.9)

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Now the symmetrical limits of the population percentage can be determined as: ( 1.28, -1.28)

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1.28 × 0.035355 = X - 0.5

0.0452544= X - 0.5

0.0452544 + 0.5 = X

0.5452544 = X

X \approx 0.545

X = 54.5%

-1.28 = \dfrac{X - 0.5}{0.035355}

- 1.28 × 0.035355 = X - 0.5

- 0.0452544= X - 0.5

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0.4547456 = X

X \approx 0.455

X = 45.5%

Therefore , we can conclude that the probability is 90% that the sample percentage is contained within 45.5% and 54.5% symmetric limits of the population percentage.

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3 years ago
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