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Luden [163]
3 years ago
15

How do you find the variable for 42x+32

Mathematics
1 answer:
a_sh-v [17]3 years ago
8 0

Answer: You can't.

Step-by-step explanation:

The reason why you can't find the variable is since there's no clues on what x could be. Therefore, 42x+32 is an expression.

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A door delivery florist wishes to estimate the proportion of people in his city that will purchase his flowers. Suppose the true
zloy xaker [14]

Answer:

The probability that the sample proportion will differ from the population proportion by greater than 0.03 is 0.009.

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

 \mu_{\hat p}=p

The standard deviation of this sampling distribution of sample proportion is:

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

As the sample size is large, i.e. <em>n</em> = 492 > 30, the central limit theorem can be used to approximate the sampling distribution of sample proportion by the normal distribution.

The mean and standard deviation of the sampling distribution of sample proportion are:

\mu_{\hat p}=p=0.07\\\\\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.07(1-0.07)}{492}}=0.012

Compute the probability that the sample proportion will differ from the population proportion by greater than 0.03 as follows:

P(|\hat p-p|>0.03)=P(|\frac{\hat p-p}{\sigma_{\hat p}}|>\frac{0.03}{0.012})

                           =P(|Z|>2.61)\\\\=1-P(|Z|\leq 2.61)\\\\=1-P(-2.61\leq Z\leq 2.61)\\\\=1-[P(Z\leq 2.61)-P(Z\leq -2.61)]\\\\=1-0.9955+0.0045\\\\=0.0090

Thus, the probability that the sample proportion will differ from the population proportion by greater than 0.03 is 0.009.

5 0
3 years ago
What is 2 divided by 9.40
IRINA_888 [86]

Answer:0.212765957

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Write the expression below. Divide 9 by the sum of 6 and 4
IgorLugansk [536]
First add 6 &4 and you get ten then you divide 9 by 10 and get .9
5 0
3 years ago
Tara has 3/4 cup of ice cream. How many 1/5 -cup servings are in 3/4 cup of ice cream?​
saw5 [17]

Answer:

4/15

Step-by-step explanation:

because 1/5÷3/4=4/15

8 0
3 years ago
Solve C=2<img src="https://tex.z-dn.net/?f=%20%5Cpi%20" id="TexFormula1" title=" \pi " alt=" \pi " align="absmiddle" class="late
Gnoma [55]
      C = 2πr      Divide both sides by 2π
C/2π = r           Switch the sides to make it easier to read
       r = c / 2π
6 0
3 years ago
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