2 years ago

Which of the following numbers is not a prime number? 7 9 3 13

Mathematics

2 answers:

klasskru [66]2 years ago

8 0

Answer:

9 is not a prime number.

DanielleElmas [232]2 years ago

8 0

Answer:

9 is not a prime number. Hope that helps.

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2 years ago

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2 years ago

Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best po

Brrunno [24]

Answer: (0.63, 7.07)

Step-by-step explanation:

The confidence interval for population proportion is given by :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

Given : $\hat{p} =0.7$ ; $n=110$

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Critical value : $z_{\alpha/2}=1.645$

Now, a 90% confidence interval for population proportion will be :-

$0.7\pm (1.645)\sqrt{\dfrac{0.7(1-0.7)}{110}}\\\\\approx0.7\pm0.07\\\\=(0.7-0.07,0.7+0.07)=(0.63,\ 7.07)$

Hence, a 90% confidence interval for population proportion = (0.63, 7.07)

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2 years ago

When the variable is on both sides of the inequality it must be isolated on one side and it doesn’t matter which side

frosja888 [35]

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Step-by-step explanation:

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Which of the following numbers is not a prime number? 7 9 3 13​

Which of the following numbers is not a prime number? 7 9 3 13