Multiply: (3x + 7)(5x2 − 3x + 6) A) 15x3 + 26x2 − 39x + 42 B) 15x3 + 26x2 + 3x + 42 C) 15x3 − 44x2 − 3x + 42 D) 15x3 + 26x2 − 3x
2 answers:
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Answer:
There is enough statistical evidence to say that the means are different.
Step-by-step explanation:
<em>The question is incomplete:</em>
<em>"The two-sample t statistic for comparing the population means has value (±0.001)."</em>
<em />
The null and alternative hypothesis are:
The level of significance is assumed to be α=0.01.
The difference of the sample means is:
The standard deviation for the difference of the means is:
Then, the t-statistic is:
The degrees of freedom are:
With 40 degrees of freedom the t-critial for a significance of α=0.01 is t=±2.705.
As the t-statistic lies in the rejection region, the effect is significant and the null hypothesis is rejected.
There is enough statistical evidence to say that the means are different.
Answer:
shape I is similar to shape Il is a translation <u>6</u> right and <u>1</u> up, then a dilation by a scale factor of <u>1/2 (center:origin (0,0)</u>.
Step-by-step explanation:
shape I is similar to shape Il is a translation <u>6</u> right and <u>1</u> up, then a dilation by a scale factor of <u>1/2</u>.
