3 years ago

Write as an expression and simplify: the tripled product of 6a and b^2

Mathematics

1 answer:

klasskru [66]3 years ago

3 0

Answer:

(6ab^2)^3

Step-by-step explanation:

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Joe heard from a reliable source that only 22% of people actually sleep 8 hours or more per night. You do a survey and find 58 o

Juliette [100K]

Answer:

95% Confidence interval: (31.32%,47.04%)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 148

Number of people who sleep for 8 hours or longer, x = 58

$\hat{p} = \dfrac{x}{n} = \dfrac{58}{148} = 0.3918$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.3918\pm 1.96(\sqrt{\dfrac{0.3918(1-0.3918)}{148}})\\\\ = 0.3918\pm 0.0786\\\\=(0.3132,0.4704)=(31.32\%,47.04\%)$

(31.32%,47.04%) is the required 95% confidence interval.

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3 years ago

I don’t know how to divide 3 and 2 digits

Varvara68 [4.7K]

3.5 think of it as 3.0
C. ——
2.0

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3 years ago

Evaluate the following expression.<br><br> 5-3

Valentin [98]

subtract 5-3 = 2

check 2+3 =5

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3 years ago

Is 85/136 equal to 15/24

Aleks04 [339]

Answer:yes

Step-by-step explanation:

(85/136)=.625

(15/24)=.625

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3 years ago

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The weight of a dog crate is 5.6 lbs. the crate and 3 puppies together weigh 36.35 lbs. estimate the weight of one puppy.

nata0808 [166]

36.35 - 5.6 = 30.75 ÷ 3 = 10.25

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3 years ago