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3 years ago

Help please? Write the equation for the Red line.

Mathematics

1 answer:

nata0808 [166]3 years ago

7 0

Y=3/2x+7 hope this helps

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In a study of the accuracy of fast food drive-through orders, Restaurant A had 295 accurate orders and 55 that were not accurat

Afina-wow [57]

Answer: (a) $14.5\%$

(b) Restaurant B has a significantly lower percentage of orders that are not accurate.

Step-by-step explanation:

Confidence interval for population proportion is given by :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

Given: Significance level : $\alpha: 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

For Restaurant A , The proportion of orders not accurate : $p=\dfrac{55}{295}\approx0.19$

Then , the Confidence interval for population proportion will be :-

$0.19\pm (1.96)\sqrt{\dfrac{0.19(1-0.19)}{295}}\\\\=0.19\pm0.045=(0.145,0.235)=(14.5\%,23.5\%)\\\\\text{i.e.}14.5\%$

Also, 95% confidence interval for the percentage of orders that are not accurate at Restaurant B: $0.138$

By comparing both the lower confidence limit and upper confidence limit of the interval for Restaurant B is lower than the lower confidence limit of t and the upper confidence limit of the interval for Restaurant A.

Therefore, Restaurant B has a significantly lower percentage of orders that are not accurate.

3 0

3 years ago

Plz help, The graph of y = f(x) is shown below. What are all of the real solutions of f(x) = 0?

8_murik_8 [283]

Answer:

The real solutions of f(x)=0 are: 0, 2, 5, 6

Step-by-step explanation:

We are given:

The graph of y = f(x)

We need to find all of the real solutions of f(x) = 0?

By looking at the graph we need to find the values of y when x =0

Looking at the graph, when x=0 we get

0, 2,5 and 6

So, the real solutions of f(x)=0 are: 0, 2, 5, 6

I am attaching the figure, that determines the answers.

8 0

3 years ago

Find the y- intercept of the following equation y = 6x + 10<br> Please help quick!

n200080 [17]

The slope is 6 and the y intercept is 10. Mark brainliest would be aporeciated

8 0

4 years ago

13. Find the measure of

Oksanka [162]

Answer:

i think it would be 48 degrees because of where the opening is

Step-by-step explanation:

7 0

3 years ago

Which of the points do not lie on X-axis P(0,3), Q(1,0), R(0, -1), S(-5, 0), T(1, 2) do not lie on X-axis

Anna71 [15]

Answer:

c) P, R, and T

Step-by-step explanation:

the y coordinate has to be a zero in order for the point to lie on the X-axis

4 0

3 years ago