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AlexFokin [52]
3 years ago
8

The speeds in miles per hour of seven randomly selected qualifiers for the Indianapolis 500 (in 2012) are listed below. Estimate

the mean qualifying speed with 95confidence. Round your answers to four decimal places.
223.684 222.929 226.240 224.037 226.484 225.172 223.422
Mathematics
1 answer:
SSSSS [86.1K]3 years ago
4 0

Answer:

Mean qualifying speed

= 224.5669mi/hr

Speed that passed the average/mean

= 226.240mi/hr ,224.037mi/hr 226.484mi/hr, 225.172 mi/hr

Step-by-step explanation:

Let's understand what mean is then understand what mean qualifying speed is.

First mean is like the average of the seven speed listed below.

So let's find the mean.

Mean = (223.684+ 222.929+ 226.240

+224.037 +226.484+ 225.172

+223.422)/7

Mean = 1571.968/7

Mean = 224.5669

So the mean qualifying speed is those speed that qualifies when the mean is taken, i.e the speed that crossed the average.

Mean qualifying speed are

=226.240 ,224.037,226.484

, 225.172

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Step-by-step explanation:

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Antonio's = 18 feet /min.

So in 5 minutes Tony travels 5*15 = 75 feet and Antonio travels 5*18 = 90 feet.

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2 years ago
Which triangle can be drawn as it is described?
yawa3891 [41]

Answer:

An isosceles triangle with angles measuring 20° and 80°

Step-by-step explanation:

Verify each case

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Is not a scalene triangle because the third angle is (180-110°-35°=35°), therefore is an isosceles triangle

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we know that

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so in this problem

5+10> 15 -----> is not true

therefore

with these measurements can not draw any triangle

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we know that

An isosceles triangle has two equal sides and two equal angles

In this problem the third angle is (180-20°-80°=80°),

therefore

is an isosceles triangle and can be drawn as it is described

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