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romanna [79]
3 years ago
8

Will and John sell lemonade at a lemonade stand. After an hour, they have taken in $4 for a total of 8 cups of lemonade. What is

the unit rate per cup of lemonade?
A.
$0.50 per cup


B.
$2.00 per cup


C.
$4.00 per cup


D.
$8.00 per cup
Mathematics
1 answer:
Murljashka [212]3 years ago
5 0

Answer:

The answer is A - $0.50 per cup

Step-by-step explanation:

If you divide the $4 by the 8 cups you get $0.50

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Answer: (4.0845,\ 6.5755)

Step-by-step explanation:

As per given , we have

n = 11

\overline{x}=5.33\\\\ s=1.33

Since population standard deviation is missing, so we use t-test.

Critical t-value for 99% confidence :

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Confidence interval :

\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}\\\\= 5.33\pm (3.1060)\dfrac{1.33}{\sqrt{11}}\\\\\approx5.33\pm1.2455\\\\=(5.33-1.2455,\ 5.33+1.2455)\\\\=(4.0845,\ 6.5755)

Hence,  99% confidence interval for the mean amount of time that students spend in the shower each day.= (4.0845,\ 6.5755)

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IgorLugansk [536]

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Step-by-step explanation:

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Diano4ka-milaya [45]

Answer:

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Step-by-step explanation:

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32 (pi) = c

32 (pi)= 2 (pi) r 

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