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3 years ago

64% of the students in the school play are boys. If there are 75 students in the play how many are boys?

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

5 0

Answer:

48 students

Step-by-step explanation:

multpily 75 by 64%. 0.64*75= 48/

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Answer:

71.1

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2 years ago

Whitch of the following is closest to 8 62 61 65 66

Natasha2012 [34]

Answer:

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Step-by-step explanation:

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1 year ago

What plus what equals 1,250

mamaluj [8]

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2 years ago

A random sample of 84 students at a university showed an average age of 22 years and a sample standard deviation of 3 years. Fin

Debora [2.8K]

Answer:

The margin of error for the 94% confidence interval is 0.6154.

Step-by-step explanation:

The (1 - α)% confidence interval for population mean is:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

The margin of error of this interval is:

$MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

The critical value of z for 94% confidence level is, z = 1.88.

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$MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

$=1.88\times\frac{3}{\sqrt{84}}\\\\=0.6154$

Thus, the margin of error for the 94% confidence interval is 0.6154.

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2 years ago

Below is the number of service calls a store received over a period of 87 days.

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1 year ago