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mash [69]
3 years ago
15

There are 600 cars in the parking lot. The ratio of red cars to white cars is 3:5. How many red cars and how many white cars are

there in the parking lot?
Mathematics
1 answer:
kicyunya [14]3 years ago
8 0

Answer:

360 red cars

Step-by-step explanation:

your welcome (yw)

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Answer:

Confidence interval is 0.2911

Step-by-step explanation:

Given that 32% of fans sport is basketball as favorite sport. So total number of fans is,

32\%\times 1000

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So 320 fans favorite sport is basket ball.

Now find sample proportion ,

\widehat{p}=\dfrac{number\:of\:people\:in\:the\:sample}{total\:number\:of\:people}

Substituting the value,

\widehat{p}=\dfrac{320}{1000}

\widehat{p}=0.320

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CI=\widehat{p}\pm z\sqrt{\dfrac{\widehat{p}\left (1-\widehat{p}\right )}{n}}

To calculate the z value.

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Now divide above value by 2,  

\dfrac{0.05}{2}=\dfrac{\alpha}{2}

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To find the value of z score calculate the area under the curve as follows

A=\dfrac{1+CL}{2}

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A=\dfrac{1.95}{2}

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or find the value from excel by using command as follows,  

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CI=0.320- 0.02891

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CI=0.320+ 0.02891

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