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77julia77 [94]
2 years ago
10

2. A teacher buys 144 erasers for her class. She gives each child an equal amount. There are 24 students in the class. How many

erasers does each child get?​
Mathematics
2 answers:
postnew [5]2 years ago
6 0

Answer:

They each got 6 erasers.

Step-by-step explanation:

Sorry If I am wrong.

vredina [299]2 years ago
6 0

Answer: The correct answer would be 6 erasers

Step-by-step explanation: 144 divided by 24 students should equal 6.

Thus each student will obtain 6 erasers.

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You have drawn a simple random sample of 36 college students, asking each student how much rent they pay per month. You obtain a
Karo-lina-s [1.5K]

Answer:

573-1.690\frac{22}{\sqrt{36}}=566.8033    

573+1.690\frac{22}{\sqrt{36}}=579.1967      

And the 90% confidence interval would be between [566.80 and 579.20]

Step-by-step explanation:

Information given

\bar X=573 represent the sample mean

\mu population mean (variable of interest)

s=22 represent the sample standard deviation

n=36 represent the sample size  

Confidence interval

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom are given by:

df=n-1=36-1=35

The Confidence level is 0.90 or 90%, the significance would be \alpha=0.1 and \alpha/2 =0.05, and the critical value for this case would be t_{\alpha/2}=1.690

And replacing we got:

573-1.690\frac{22}{\sqrt{36}}=566.8033    

573+1.690\frac{22}{\sqrt{36}}=579.1967    

And the 90% confidence interval would be between [566.8033 and 579.1967]

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