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lyudmila [28]
3 years ago
14

And ice cream factory makes 120 quarts of ice cream in 10 hours. How many quarts could be made in 12 hours? What was that rate p

er day?
Mathematics
2 answers:
nekit [7.7K]3 years ago
3 0
My answer is 144 quarts are made in 12 hours. 

I first found out how many quarts are made in 1 hour. 
120 divided by 10 is 12. 
12 quarts are made per hour.
So apply this to 12 hours.
12 times 12 = 144 quarts.

Serhud [2]3 years ago
3 0
144 hours because 120 divided 10 is 12, 12 times 2  is 24, 24 plus 120 is 144 then add on the label and you get 144 hours!
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<h2>Answer with explanation:</h2>

Let \mu be the population mean lifetime of circulated $1 bills.

By considering the given information , we have :-

H_0:\mu=18\\\\H_a:\mu\neq18

Since the alternative hypotheses is two tailed so the test is a two tailed test.

We assume that the lifetime of circulated $1 bills is normally distributed.

Given : Sample size :  n=50 , which is greater than 30 .

It means the sample is large so we use z-test.

Sample mean : \overline{x}=18.8

Standard deviation : \sigma=2.8

Test statistic for population mean :-

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

\Rightarrow\ z=\dfrac{18.8-18}{\dfrac{2.8}{\sqrt{50}}}\approx2.02

The p-value= 2P(z>2.02)=0.0433834

Since the p-value (0.0433834) is greater than the significance level (0.02) , so we do not reject the null hypothesis.

Hence, we conclude that we do not have enough evidence to support the alternative hypothesis that the average lifetime of a circulated $1 bill differs from 18 months.

6 0
3 years ago
In a class of 40 students, 8 are in the drama club and 12 are in the art club. If a student is selected at random, what is the p
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Answer:

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Step-by-step explanation: because am big math

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1 year ago
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kotegsom [21]

Answer: Nate picked 60 apples and Laura picked 30. (1/2)x+x=90


Step-by-step explanation:


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2 years ago
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Answer:

2,714in^3

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6 0
2 years ago
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Answer:

0.016

Step-by-step explanation:

To find the probability we have to Divide the number of events by the total number of possible outcomes. This will result in the probability of the single event.

Therefore, the formula of probability is

P(v) = \frac{no of events}{total possible outcomes}\\

In the given case,

P(v) = \frac{20}{1250}\\ P(v) = 0.016

Which is our required answer.

6 0
3 years ago
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