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3 years ago

15

A quick quiz consists of a multiple-choice question with 4 possible answers followed by a multiple-choice question with 3 possib

le answers. If both questions are answered with random guesses, find the probability that both responses are correct.

1 answer:

olga55 [171]3 years ago

7 0

Answer:

0.0825

Step-by-step explanation:

1/4x1/3=0.0825

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aleksandr82 [10.1K]

Circumference = 2 * PI * radius
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Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidenc

quester [9]

Answer: 18

Step-by-step explanation:

The formula to find the minimum sample size is given by :_

$n=(\dfrac{z^*\cdot \sigma}{E})^2$

, where $\sigma$ = population standard deviation.

z*= critical z-value.

E= Margin of error.

Given : $\sigma= 13$

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We know that critical value corresponding to 99% confidence level = z*=2.576 [Using z-table]

Then, the required sample size would be :

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3 years ago

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If 5 hamburgers cost $10, what is the cost for 3 hamburgers?

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Step-by-step explanation:

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