3 years ago

What is the value of x (81) (7x+15)

Mathematics

1 answer:

scoray [572]3 years ago

3 0

Answer:

9 if I am correct also I rounded to a whole number, am not sure

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Step-by-step explanation:

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Answer: 0.038

Step-by-step explanation:

Given: Total games : n= 375

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Critical z-value for 90% confidence: z* = 1.645

Margin of error = $z^*\sqrt{\dfrac{(1-p)p}{n}}$

The margin of error in a 90% confidence interval estimate of p $=1.645\sqrt{\dfrac{0.2\times0.8}{300}}\\= 1.645\times\sqrt{0.00053333}\\\\=1.645\times0.0231\\\\=0.0379995\approx$$0.038$

Hence, the required margin of error = 0.038

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3 years ago