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3 years ago

Use tens to solve 13-7

1 answer:

vladimir2022 [97]3 years ago

4 0

You can change it to 130-70 and that'll give you 50.

Then just cross out the 0 from the 50 since 13-7 didn't have any zeros. So 5.

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you want to obtain a sample to estimate a population proportion. at this point in time, you have no reasonable preliminary estim

andrey2020 [161]

Answer:

The value is $n =2401$

Step-by-step explanation:

From the question we are told that

The margin of error is E = 2%= 0.02

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Here we are going to assume that the sample proportion is $\^ p = 0.50$

Generally the sample size is mathematically represented as

$n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )$

=> $n =[\frac{ 1.96 }{ 0.02} ]^2 * 0.5 (1 -0.5 )$

=> $n =2401$

7 0

3 years ago

Pls help this is not graded

vitfil [10]

D , none of the above!!!!

5 0

3 years ago

Please help! i dont really understand.

zzz [600]

Answer:

i cant see good in the pic

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is the sum of the series 1 + ln3 + (ln3)^2/2!?

tresset_1 [31]

$\displaystyle\sum_{n\ge0}\frac{(\ln3)^n}{n!}=e^{\ln3}=3$

which follows from the power series representation for $e^x$ ,

$e^x=\displaystyle\sum_{n\ge0}\frac{x^n}{n!}$

and taking $x=\ln3$ .

5 0

3 years ago

Two linear are parallel if and only if their slopes are

grin007 [14]

Their slopes must be the same, but with different y-intercepts.

Here is an example: 2x + 1 and 2x + 4 are parallel lines.

8 0

3 years ago