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Flauer [41]
3 years ago
10

At a county fair, 9 people out of 1,000 earned a perfect score in a carnival game. What decimal represents the number of people

who earned a perfect score?
Mathematics
1 answer:
SVEN [57.7K]3 years ago
4 0

Answer:

Decimal represents the number of people who earned a perfect score is 0.009 .

Step-by-step explanation:

As given

At a county fair, 9 people out of 1,000 earned a perfect score in a carnival game.

Number\ of\ people\ who\ earned\ a\ perfect\ score = \frac{People\ who\ earned\ perfect\ score}{Total\ number\ people}

people who earned a perfect score = 9

Total number of people = 1000

Put in the above

Number\ of\ people\ who\ earned\ a\ perfect\ score = \frac{9}{1000}

Number of people who earned a perfect score = 0.009

Therefore  decimal represents the number of people who earned a perfect score is 0.009 .

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a previous analysis of paper boxes showed that the standard deviation of their lengths is 15 millimeters. A packers wishes to fi
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Answer:

864.36 boxes

Step-by-step explanation:

In the question above, we are given the following values,

Confidence interval 95%

Since we know the confidence interval, we can find the score.

Z score = 1.96

σ , Standards deviation = 15mm

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The formula to use to solve the above question is given as:

No of boxes =[ (z score × standard deviation)/ margin of error]²

No of boxes = [(1.96 × 15)/1]²

= 864.36 boxes

Based on the options above, we can round it up to 97 boxes.

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3 years ago
A bag contains three red marbles, six blue marbles, and three yellow marbles. What is the probability of selecting one red marbl
Fed [463]

A bag contains three red marbles, six blue marbles, and three yellow marbles.

therefore total no. of marbles = 3 + 6 + 3 = 12

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therefore probablity of selecting one red marble is 3/12 = 1/4

again total no. of blue marbles is 6

therefore probability of selecting one blue marble is 6/12 = 1/2

now total probability of selecting one red ball replacing it then selecting one blue marble is. 1/4 * 1/2 = 1/8

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3 years ago
Can someone pls help me I’m confused ‍♀️
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Answer:

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Step-by-step explanation:

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If you roll a six-sided die, what is the probability you will obtain greater than a 2?
Delvig [45]

If we will roll a fair die then the outcomes wil be 1,2,3,4,5,6.

Hence, the total number of events= 6

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So, there's 4 events which are greater than 2.

Now the formula to find the probability is:

probability=\frac{Number of events more than 2}{Total number of events.}

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So, the probability of getting greater than a 2 is 2/3.

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