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3 years ago

12

Two sailboats leave the same harbour in different directions. Sailboat 1 travels due north for 10 km. Sailboat 2 travel ahead 60

degrees east of North for 8 kilometres how far are the sailboats from one another at their current locations.

1 answer:

OlgaM077 [116]3 years ago

5 0

Answer:

I am filipino culture :))

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Write the equation for the line of best fit

Vsevolod [243]

<u>Given</u>:

The given graph shows the scatter points.

We need to determine the equation for the line of best fit.

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From the figure, it is obvious that the slope of the line is $m=2.33$

Rounding off to the nearest tenth, we get;

$m=2.3$

Thus, the slope of the equation is $m=2.3$

<u>Value of y - intercept:</u>

From the figure, it is obvious that the y - intercept is $b=33.153$

Rounding off to the nearest tenth, we get;

$b=33.2$

Thus, the y - intercept of the equation is $b=33.2$

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The equation of the line can be determined using the formula,

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4 years ago

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If you want to construct a 90% confidence interval, what critical value (z*) should you use? Group of answer choices 2.576 1.960

Rom4ik [11]

Answer:

For this case we know that the confidence level is 90% so then the significance level is $\alpha=1-0.9 =0.1$ and $\alpha/2 =0.05$ . And we can find in the normal standard distribution a value who accumulates 0.5 of the area on each tail and we got:

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And the best option would be:

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Step-by-step explanation:

We assume that the parameter of interest is $\theta$ and we can assume that the distribution for this parameter is normally distributed so then the confidence interval assuming a two sided interval is given by:

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For this case we know that the confidence level is 90% so then the significance level is $\alpha=1-0.9 =0.1$ and $\alpha/2 =0.05$ . And we can find in the normal standard distribution a value who accumulates 0.5 of the area on each tail and we got:

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3 years ago

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borishaifa [10]

24 degrees per second is 360 degrees in 15 seconds (pretty fast for a Ferris wheel!).

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Step-by-step explanation:

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