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3 years ago

Plz help me!i dont know how to do this.

Mathematics

2 answers:

Sliva [168]3 years ago

7 0

You have to multiply each of them

MaRussiya [10]3 years ago

5 0

Answer:

Step-by-step explanation:

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For each hour he babysits, Anderson earns $1 more than half of Carey’s hourly rate. Anderson earns $6 per hour. Which equation c

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Carey earns c hourly
Anderson earns $6 hourly which is also 1+ c/2
So, 6=1+c/2
12=2+c
c=$10
<span>Carey earns $10 hourly</span>

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3 years ago

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Can someone please help me with this? it’s algebra 2

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2 years ago

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A bank sampled its customers to determine the proportion of customers who use their debit card at least once each month. A sampl

Zinaida [17]

Answer:

(0.084,0.396)

Step-by-step explanation:

The 99% confidence interval for the proportion of customers who use debit card monthly can be constructed as

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$p=\frac{x}{n}$

$p=\frac{12}{50}$

$p=0.24$

$q=1-p=1-0.24=0.76$

$\frac{\alpha }{2} =\frac{\0.01 }{2}=0.005$

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$0.24-z_{0.005} \sqrt{\frac{0.24*0.76}{50} }$

$0.24-2.58(0.0604)$

$0.24-0.155832$

By rounding to three decimal places we get,

$0.084$

The 99% confidence interval for the proportion of customers who use debit card monthly is (0.084,0.396).

3 0

2 years ago

The volume of the prism is 900 cubic centimeters. The

Annette [7]

Answer:

Step-by-step explanation:

i dont now how to arrange

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2 years ago

Suppose researchers are concerned about the rate of residents reporting no access to health insurance in a particular community.

o-na [289]

Answer:

a) The expected number of households that will have no insurance is 2.4.

b) The standard deviation is 1.3505.

Step-by-step explanation:

For each resident, there are only two possible outcomes. Either they have health insurance, of they do not. This means that we can solve this problem using concepts of the binomial probability distribution.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected number of successes is given by:

$E(X) = np$

The standard deviation is given by:

$\sqrt{Var(X)} = \sqrt{np(1-p)}$

In this problem, we have that:

A group of 10 households, so $n = 10$ .

24% of residents are living without health insurance, so $p = 0.24$ .

a. What is the expected number of households that will have no insurance?

$E(X) = np = 10*0.24 = 2.4$

The expected number of households that will have no insurance is 2.4.

b. What is the standard deviation?

$\sqrt{Var(X)} = \sqrt{np(1-p} = \sqrt{10*0.24*0.76} = 1.3505$

The standard deviation is 1.3505.

4 0

3 years ago

Plz help me!i dont know how to do this.​

Plz help me!i dont know how to do this.