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RideAnS [48]
3 years ago
5

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

Mathematics
2 answers:
Minchanka [31]3 years ago
6 0

Answer:

60

Step-by-step explanation:

Minchanka [31]3 years ago
5 0

Answer:

60

Step-by-step explanation:

PEMDAS

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Answer:

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Step-by-step explanation:

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Find the critical value of x2 based on the given information H1 &gt;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.

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3 years ago
3a*12 can a variable be multiplied by a constant
Virty [35]
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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:

i need time

i hope u may understand

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