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3 years ago

-6x -6= help pls i don’t understand

Mathematics

1 answer:

makkiz [27]3 years ago

8 0

The answer here is $x=-1$

$Explanation$

___________________________________________________________

$-6x -6 = 0$

$-6x - 6 +6 = 0+6$

$-6x = 6$

$-6x/-6 = 6/-6$

$x = -1$

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Answer:

Yes, this provide enough evidence to show a difference in the proportion of households that own a desktop.

Step-by-step explanation:

We are given that National data indicates that 35% of households own a desktop computer.

In a random sample of 570 households, 40% owned a desktop computer.

Let p = population proportion of households who own a desktop computer

SO, Null Hypothesis, $H_0$ : p = 25% {means that 35% of households own a desktop computer}

Alternate Hypothesis, $H_A$ : p $\neq$ 25% {means that % of households who own a desktop computer is different from 35%}

The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of 570 households who owned a desktop computer = 40%

n = sample of households = 570

So, test statistics = $\frac{0.40-0.35}{{\sqrt{\frac{0.40(1-0.40)}{570} } } } }$

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Therefore, we conclude that % of households who own a desktop computer is different from 35%.

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