Which expression is equivalent to 4(7 + 8)?

PLEASE HELP!!<br><br> Only answer if you're absolutely correct, please and thank you.

Elis [28]

Answer:

1 is multiplication

2 is addition

3 is simplification

4 is division

5 is simplification

Step-by-step explanation:

8 0

1 year ago

Find the critical value of x2 based on the given information H1 >3.5 n=14 a=0.05

egoroff_w [7]

Answer:

The degrees of freedom are given by:

$df = n-1=14-1=13$

The significance level is $\alpha=0.05$ and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

$\chi^2_{\alpha}= 22.362$

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

Step-by-step explanation:

We have the followign system of hypothesis:

Null hypothesis: $\sigma^2 \leq 3.5$

Alternative hypothesis: $\sigma^2 >3.5$

The degrees of freedom are given by:

$df = n-1=14-1=13$

The significance level is $\alpha=0.05$ and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

$\chi^2_{\alpha}= 22.362$

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

4 0

3 years ago

3a*12 can a variable be multiplied by a constant

Virty [35]

Yes it can be multiplied

6 0

2 years ago

delilah studies the wolf population of a nearby national park. She has calculated that the population decreased by 1.25% per yea

KATRIN_1 [288]

Step-by-step explanation: