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4 years ago

How fast does a person run if they run for a mile at 60 miles per hour

Mathematics

2 answers:

Shalnov [3]4 years ago

5 0

Answer:

Step-by-step explanation:

speed = distance / time

speed = 60 miles / 1 hour

speed = 60 miles per hour or 60mph !!!!!!!

erastovalidia [21]4 years ago

4 0

Answer:

0.016

Step-by-step explanation:

Time= distance/rate

From the above question, we were given distance and rate, therefore time is

1/60= 0.016 per hour

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<span>( 5, 2) and ( 6, 4)
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3 years ago

The mean amount purchased by a typical customer at Churchill’s Grocery Store is $23.50, with a standard deviation of $5.00. Assu

m_a_m_a [10]

Answer: 0.0170

Step-by-step explanation:

Given : The mean amount purchased by a typical customer at Churchill’s Grocery Store is $23.50, with a standard deviation of $5.00.

i.e. $\mu=23.50$

$\sigma=5$

We assume the distribution of amounts purchased follows the normal distribution.

Sample size : n=50

Let $\overline{x}$ be the sample mean.

Formula : $z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

Then, the probability that the sample mean is at least $25.00 will be :-

$P(\overline{x}\geq\25.00)=P(\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\geq\dfrac{25-23.50}{\dfrac{5}{\sqrt{50}}})\\\\=P(z\geq2.12)\\\\=1-P(z$

Hence, the likelihood the sample mean is at least $25.00= 0.0170

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4 years ago