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4 years ago

Which number is a rational number?

Mathematics

2 answers:

eimsori [14]4 years ago

8 0

B is the correct answer

Soloha48 [4]4 years ago

6 0

Answer:

either b or c but i think its b

Step-by-step explanation:

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A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the

Rasek [7]

Answer:

$\mu_{p} = p = 0.06$

And the standard error is given by:

$SE_{p} = \sqrt{\frac{\hat p(1-\hat p)}{n}}$

And replacing we got:

$SE_[p]= \sqrt{\frac{0.06*(1-0.06)}{373}}= 0.0123$

And we want to find this probability:

$P(\hat p < 0.03)$

We can calculate the z score for this case and we got:

$z = \frac{\hat p -\mu_p}{\Se_p} = \frac{0.03-0.06}{0.0123}= -2.440$

And using the normal distribution table or excel we got:

$P(\hat p < 0.03)= P(Z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

For this case we can find the mean and standard error for the sample proportion with these formulas:

$\mu_{p} = p = 0.06$

And the standard error is given by:

$SE_{p} = \sqrt{\frac{\hat p(1-\hat p)}{n}}$

And replacing we got:

$SE_[p]= \sqrt{\frac{0.06*(1-0.06)}{373}}= 0.0123$

And we want to find this probability:

$P(\hat p < 0.03)$

We can calculate the z score for this case and we got:

$z = \frac{\hat p -\mu_p}{\SE_p} = \frac{0.03-0.06}{0.0123}= -2.440$

And using the normal distribution table or excel we got:

$P(\hat p < 0.03)= P(Z$

8 0

4 years ago

Help? use the rule to find the the first 10 terms in the pattern first term:7 rule:multiply by 2

alex41 [277]

So,

Start with 7.

Multiply by 2.
7 * 2 = 14

Multiply by 2.
14 * 2 = 28

Multiply by 2.
28 * 2 = 56

Multiply by 2.
56 * 2 = 112

Multiply by 2.
112 * 2 = 224

Multiply by 2.
224 * 2 = 448

Multiply by 2.
448 * 2 = 896

Multiply by 2.
896 * 2 = 1792

Multiply by 2.
1792 * 2 = 3584

The first ten terms in the pattern are:
7, 14, 28, 56, 112, 224, 448, 896, 1792, 3584

In a function:
f(x) = 2x

In a rule:
S = {x| x/7 = Whole Number}

3 0

3 years ago

Wood floors are being refinished in an office. If the room is a square with 15 foot 6 inch sides, what will it cost to have the

lapo4ka [179]

<span>$1,436.70 is the answer</span>

7 0

3 years ago

Read 2 more answers

What is the slope of the line

Fynjy0 [20]

Answer:

Passes through (0,1) and (1,3).

3-1/1-0=2/1=2

The slope of this line is 2

Step-by-step explanation:

4 0

3 years ago

Help me please guys I really need it

TEA [102]

Answer:

You have a standard deck of 52 cards
You have 4 jacks in the standard card
Hence 4/52

6 0

3 years ago