3 years ago

PLEASE HELP!!! IN DESPERATE THIS US DUE IN 20 MINUTES!!??

Mathematics

1 answer:

dem82 [27]3 years ago

5 0

Tbh I honestly don’t know

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In a random sample of 16 residents of the state of Washington, the mean waste recycled per person per day was 2.8 pounds with a

kakasveta [241]

Answer: The required confidence interval would be (2.72,2.89)

Step-by-step explanation:

Since we have given that

Mean = 2.8 pounds

Standard deviation = 0.24 pounds

n = sample size = 16

We need to find the 80% confidence interval for the mean waste.

z=1.341

So, the confidence interval will be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=(2.8\pm 1.341\times \dfrac{0.24}{\sqrt{16}})\\\\=(2.8\pm 1.314\times 0.06)\\\\=(2.8-0.07884,2.8+0.07884)\\\\=(2.72116,2.87884)$

Hence, the required confidence interval would be (2.72,2.89)

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4 years ago

Multiply 9/4 x 14<br><br> -23/4<br> -28<br> -63/2

Tatiana [17]

Answer:

Step-by-step explanation:

$14 = \frac{14}{1}$

$\frac{9}{4} \times \frac{14}{1} = \frac{126}{4} = \frac{63}{2}$

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3 years ago

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Which of the following choices is equivalent to 1 + 8(2x + 3)?

RUDIKE [14]

Answer:

16x + 25

Step-by-step explanation:

First, distribute the 8 to both numbers within the parenthesis.

1 + 16x + 24

Then, add similar terms together.

16x + 25

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3 years ago

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mr_godi [17]

Answer:

Total bars = 12g

Step-by-step explanation:

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