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nikitadnepr [17]
3 years ago
7

I need help with this problem

Mathematics
1 answer:
sertanlavr [38]3 years ago
6 0

Answer:

Step-by-step explanation:

ill help

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A physical fitness association is including the mile run in its secondary- school fitness test. the time for this event for boys
liberstina [14]

Answer:

<u>The probability that a randomly selected boy in school can run the mile in less than 348 seconds is 1.1%.</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

μ of the time a group of boys run the mile in its secondary- school fitness test  = 440 seconds

σ of the time a group of boys run the mile in its secondary- school fitness test = 40 seconds

2. Find the probability that a randomly selected boy in school can run the mile in less than 348 seconds.

Let's find out the z-score, this way:

z-score = (348 - 440)/40

z-score = -92/40 = -2.3

Now let's find out the probability of z-score = -2.3, using the table:

p (-2.3) = 0.0107

p (-2.3) = 0.0107 * 100

p (-2.3) = 1.1% (rounding to the next tenth)

<u>The probability that a randomly selected boy in school can run the mile in less than 348 seconds is 1.1%.</u>

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3 years ago
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kompoz [17]
This is equals 3 and 18/56 which reduces to 3 and 9/28 all you have to do is plug it the calculator like it is shown and then you will get this answer
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During second period, Janet completed a grammar worksheet.
Dmitry_Shevchenko [17]

Answer: 50%

Step-by-step explanation:

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Please help I dont understand ​
nekit [7.7K]

Answer:

but each of those equations in in figure it out if the statement is true or false and give the reason why you think that is

Step-by-step explanation:

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-5x– 8&lt; -53 and -63 &lt; -5x – 8
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Answer:

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Step-by-step explanation:

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