4 years ago

for classes of 272 students,find the mean and standard deviation for the number born on the 4th of July. ignore leap year

Mathematics

1 answer:

klio [65]4 years ago

6 0

Correct is the answer

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Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much o

emmainna [20.7K]

Answer:

The 95% confidence interval $81.852 < \mu < 280.098$

Step-by-step explanation:

From the question we are told that

The sample mean is $\= x = 180.975$

The standard deviation is $\sigma = 143.042$

The sample size is n = 8

Given that the confidence level is 95% then the level of significance is

$\alpha =( 100- 95) \%$

=> $\alpha =0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

=> $E = 1.96 * \frac{ 143.042 }{\sqrt{8} }$

=> $E = 99.123$

Generally 95% confidence interval is mathematically represented as

$\= x -E < \mu < \=x +E$

=> $180.975 -99.123 < p < 180.975 +99.123$

=> $81.852 < \mu < 280.098$

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3 years ago

Which expression is equivalent to -36 – 8? Choose 1 answer: А -36 + (-8) B -8 + 36 8 - 36 D 36 + 8

Leviafan [203]

Answer:

b is the answer

Step-by-step explanation:

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3 years ago

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

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Answer:

Step-by-step explanation:

$54 \sqrt{4 = |?| }$

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3 years ago

Two parallel lines are cut by a transversal such that angle 2 and angle 3 are consecutive interior angles. If the measure of ang

murzikaleks [220]

Answer:

Step-by-step explanation:

$65 + angle3 = 180 \\ angle3 = 180 - 65 \\angle 3 = 115$

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4 years ago

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When you subtract by zeros the same number comes out

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