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Oksana_A [137]
3 years ago
14

A movie theater owner determined that about 2 out of every 5 customers purchases popcorn. Which simulation could be used to answ

er questions about customers purchasing popcorn?

Mathematics
2 answers:
Katena32 [7]3 years ago
7 0

Answer:

The spinner

Step-by-step explanation:

The spinner will work because there is a 2/5 chance of landing on green everytime it is spun

DerKrebs [107]3 years ago
4 0

Answer:

The spinner

Step-by-step explanation:

The spinner has 5 colors on it. So there's a 2/5 chance of landing on green every time it's spun

The dice can have 6 different outcomes. The coin flipping has 2 outcomes, but only 2 events as well.

Hope this helps!

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Please show work, i’ll mark as brainliest
bulgar [2K]

Answer:

y=4

x=-3

Step-by-step explanation:

4(-3)-9y=-48

-12-9y=-48

-9y=-36

y=4

x=-3

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3 years ago
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How much longer is a 2 1/2 inch long piece of string than a 2/5 long piece of string
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In right triangle PQR , PQ=12 cm and QR=5cm .What is cos R?
Juliette [100K]

Answer:

cosR = \frac{5}{13}

Step-by-step explanation:

assuming the right triangle has ∠ Q = 90° with legs 5 and 12

then this is a 5- 12- 13 right triangle with hypotenuse PR = 13 cm

then

cosR = \frac{adjacent}{hypotenuse} = \frac{QR}{PR} = \frac{5}{13}

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PLZ HELP ASAP SOLID GEOMETRY
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Volume of the cylinder can be calculated as:

V=πr²h

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3 years ago
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A sociologist wants to determine if the life expectancy of people in africa is less than the life expectancy of people in asia.
Colt1911 [192]

Answer:

The sample statistics are attached.

First, we need to determine the hypothesis.

The null hypothesis should be: H_{o} : u_{africa} \geq u_{asia}.

The alternative hypothesis should be: H_{a}: u_{africa}

The next step is about calculating the<em> t statistics </em>based on the samples. This <em>t test </em>will give the probability value or p-value, which determines if there's enough to reject the null hypothesis. The formula we need to use to find the t-value is: t=\frac{x_{1}-x_{2}  }{\sqrt{\frac{s_{1} ^{2} }{n_{1} } +\frac{s_{2} ^{2} }{n_{2} } } }

Replacing all the values into the formula, we have:

t=\frac{52.4-58.1}{\sqrt{\frac{(7.4)^{2} }{45}+\frac{(8.8)^{2} }{35}  } } \\t=\frac{-5.7}{\sqrt{1.2+2.2} } =\frac{-5.7}{1.8} =-3.2

Therefore, the t-value is -3.2.

Now, we using a level of significance of 0.01, and a degree of freedom (df) of 34, we use the t-table to find the p-value for this results. (df = N -1; in this case, we take the smaller sample, which is 35, giving us 34 of df).

Therefore, according to the table attached, <em>the p-value is less than 0.01,</em> which is less than our level of significance. This result means that the null hypothesis is rejected. In other words, there's enough evidence to say that <em>the life expectancy of people in Africa is less than the life of expectancy of people in Asia.</em>

<em></em>

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3 years ago
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