17) Suppose you will perform a test to determine whether there is sufficient evidence to support a

Mathematics

1 answer:

Contact [7]3 years ago

7 0

Answer: C. ±0.632.

Step-by-step explanation:

We have given,

Sample size : n= 10

Significance level : $\alpha=0.05$

Test to check determine whether there is sufficient evidence to support a

claim of a linear correlation between two variables is a two tailed test.

Degree of freedom(df) = n- 2=8

Now , by the correlation coefficient(r) table ,

The critical r value corresponding to df = 8 and Significance level = 0.025 (0.05/2) is ±0.632.

Hence, the correct option is C. ±0.632.

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A n =−1+3(n−1) an=−1+3(n−1) what is the 55 term in the sequence

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ANSWER

$a_{55}=161$

EXPLANATION

The general term for the sequence is

$a_n=-1+3(n-1)$

To find the 55th term, we have to substitute
$n = 55$
in to the general term and simplify.

This implies that,

$a_{55}=-1+3(55-1)$

$a_{55}=-1+3(54)$

$a_{55}=-1+162$

$a_{55}=161$

Therefore the 55th term is 161.

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