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3 years ago

10

As a river guide on the gauja river, antra earned $55 per passenger and a $25 tip. if she earned $410 altogether, how many passe

ngers did she have?

2 answers:

sveticcg [70]3 years ago

8 0

490 totally answer
55 + 25 +410 = 490

Ket [755]3 years ago

5 0

410 - 25 = 386

385 ÷ 55 = 7 passengers

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Answer:

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Step-by-step explanation:

A random sample of 100 people was taken i.e. n=100

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We have used single sample proportion test,

$p=\frac{x}{n}$

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Now we define hypothesis,

Null hypothesis $H_0$ : candidate A is significantly greater than 75%.

Alternative hypothesis $H_1$ : candidate A is not significantly greater than 75%.

Level of significance $\alpha=0.05$

Applying test statistic Z -proportion,

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Where, $\widehat{p}=80\%=0.80$ and $p=75%=0.75$

Substitute the values,

$Z=\frac{0.80-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}$

$Z=\frac{0.80-0.75}{\sqrt{\frac{0.1875}{100}}}$

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$Z=1.1547$

The p-value is

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$P(Z>1.1547)=1-0.8789$

$P(Z>1.1547)=0.1241$

Now, the p-value is greater than the 0.05.

So we fail to reject the null hypothesis and conclude that the A is not significantly greater than 75%.

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Step-by-step explanation:

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