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Agata [3.3K]
3 years ago
7

Which statement about the following sequence is true? -10, -3, -10, -3, -10, ... Question 3 options: It is arithmetic. It is geo

metric. It is neither arithmetic nor geometric.
Mathematics
2 answers:
Novosadov [1.4K]3 years ago
7 0

Answer:

What is the value of a2 in the sequence?

2, 5, 10, 17, ... is 2

What is the value of a3 in the sequence?

−4, −2, −1/2, −1/4, ... is ​ −1/2 ​

Which answer describes the type of sequence?

3, 9, 15, 21, ...is arithmetic with d=6

Which answer describes the type of sequence?

4, 9, 13, 22, ...

is neither arithmetic nor geometric

Which answer describes the type of sequence?

200, 40, 8, 1.6, ...

is geometric with q=1/5

 Have fun

Reptile [31]3 years ago
7 0

Answer:

Neither

Step-by-step explanation:

Not arithmetic because no common difference

Not geometric because no common ratio

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2 years ago
The estimate of the population proportion should be within plus or minus 0.02, with a 90% level of confidence. The best estimate
Rudiy27

Answer:

The sample size required is 910.

Step-by-step explanation:

The confidence interval for population proportion is:

CI=\hat p\pm z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

The margin of error is:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

Given:

\hat p = 0.16\\MOE= 0.02\\Confidence\ level =0.90

The critical value of <em>z</em> for 90% confidence level is:

z_{\alpha /2}=z_{0.10/2}=z_{0.05}=1.645 *Use a standard normal table.

Compute the sample size required as follows:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910

Thus, the sample size required is 910.

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