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dybincka [34]
3 years ago
10

Dora buys one package each of 1lb 2 lb and 4 lb packages of ground beef to make hamburgers. How many 1/4 lb hamburgers can she m

ake ?
Mathematics
1 answer:
Katarina [22]3 years ago
4 0
1+2+4= 7 lbs. she can make 28 1/4 lb burgers
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Bas_tet [7]

Answer: (4.0845,\ 6.5755)

Step-by-step explanation:

As per given , we have

n = 11

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

Critical t-value for 99% confidence :

t_{\alpha/2,\ n-1}=3.106   [using two-tailed t-value table]

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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2 years ago
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katrin [286]

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4 0
3 years ago
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Sindrei [870]

Sorry, my answer was wrong. I can't delete it so as not confuse anybody i changed it to this.

4 0
3 years ago
Read 2 more answers
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tigry1 [53]

Answer:

140 ways

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3 0
3 years ago
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Lelu [443]

Answer:

1,2,3

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2*8=16+4=20<28

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6 0
2 years ago
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