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frez [133]
3 years ago
11

Please help and please explain, thank you:)​

Mathematics
2 answers:
MrMuchimi3 years ago
6 0

Answer:

I think it is K = 2

Step-by-step explanation:

Hope this helps.

kolbaska11 [484]3 years ago
3 0
K=2 that’s the answer by the way!Have a great day
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The number of square feet per house is normally distributed with a population standard deviation of 154 square feet and an unkno
11111nata11111 [884]

Answer: (1500.66,1599.34)

Step-by-step explanation:

Confidence interval for population mean:

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

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1550\pm (1.2815)\dfrac{154}{\sqrt{16}}\\\\ = 1550\pm (1.2815)\dfrac{154}{4}\\\\= 1550\pm 49.33775\\\\ =(1550-49.33775,\ 1550+49.33775)\\\\\approx (1500.66,\ 1599.34)

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3 years ago
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GarryVolchara [31]

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Answer:

Step-by-step explanation:

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