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3 years ago

15

Using the formula n3 +1 find the first three terms

1 answer:

netineya [11]3 years ago

3 0

Answer:

2, 9, 28

Step-by-step explanation:

To find the first 3 terms substitute n = 1, 2, 3 into the formula, that is

1³ + 1 = 1 + 1 = 2

2³ + 1 = 8 + 1 = 9

3³ + 1 = 27 + 1 = 28

The first 3 terms are 2, 9, 28

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$z = -1.53$ --- test statistic

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Step-by-step explanation:

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$n_2 = 70$ $\bar x_2 = 106$ $\sigma_2 = 7.6$

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$\alpha = 0.05$

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$z = \frac{\bar x_1 - \bar x_2}{\sqrt{\frac{\sigma_1^2}{n_1} + \frac{\sigma_2^2}{n_2} }}$

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This is calculated as:

$p = 2 * P(Z < z)$

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$p = 2 * 0.0630$

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We have:

$\alpha = 0.05$

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$p = 0.1260$

By comparison:

$p > \alpha$

i.e.

$0.1260 > 0.05$

So, we fail to reject the null hypothesis.

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