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KonstantinChe [14]
2 years ago
6

If the x- and y-values in each pair of a set of ordered pairs are interchanged, the resulting set of ordered pairs is known as t

he _______.
Mathematics
1 answer:
dem82 [27]2 years ago
3 0

Answer:

Inverse of a function

Step-by-step explanation:

If the x- and y-values in each pair of a set of ordered pairs are interchanged, the resulting set of ordered pairs is known as the inverse of a function.

For example, given the following function:

y = 2x

If x=0 → y= 0

If x=1 → y= 2

If x=2 → y= 4

Now, if we find the inverse of the function:  

y = 2x → x = 2y → y = x/2

Now:

If x=0 → y= 0

If x=2 → y= 1

If x=4 → y= 2

Comparing both cases, you will notice that the ordered pairs are effectively interchanged.

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In developing an interval estimate for a population mean, a sample of 50 observations was used. the interval estimate was 19.76
alexandr402 [8]

 

The formula for interval estimate would be: μ = M ± Z(<span>sM</span>)

Where: μ is estimate

M is the mean 

Z is the z value

(<span>sM</span>) is the standard error

 

μ = M ± Z(<span>sM</span>)

n = 200 rather than 50 (√200 = 2√50)

<span>⇒ ME = (1/2) * 1.32 = .66</span>

<span>Using the formula above, plugging this in will give us: μ = 19.76 ± .66</span>

<span> = 19.76  ±  .66 is the confidence interval or interval estimate</span>

4 0
2 years ago
Gibbs Baby Food Company wishes to compare the weight gain of infants using its brand versus its competitor’s. A sample of 40 bab
Leviafan [203]

Answer:

z=\frac{(7.6-8.1)-0}{\sqrt{\frac{2.3^2}{40}+\frac{2.9^2}{55}}}}=-0.936  

The p value can be founded with this formula:

p_v =P(z  

Since the p value is higher than the significance level provided of 0.05 we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean for the Gibbs brand is significantly lower than the true mean for the competitor

Step-by-step explanation:

Information given

\bar X_{1}=7.6 represent the mean for Gibbs products

\bar X_{2}=8.1 represent the mean for the competitor

\sigma_{1}=2.3 represent the population standard deviation for Gibbs

\sigma_{2}=2.9 represent the sample standard deviation for the competitor

n_{1}=40 sample size for the group Gibbs

n_{2}=55 sample size for the group competitor

\alpha=0.05 Significance level provided

z would represent the statistic

Hypothesis to verify

We want to check if babies using the Gibbs brand gained less weight, the system of hypothesis would be:  

Null hypothesis:\mu_{1}-\mu_{2}=0  

Alternative hypothesis:\mu_{1} - \mu_{2}< 0  

The statistic would be given by:

z=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}} (1)  

Replacing the info given we got:

z=\frac{(7.6-8.1)-0}{\sqrt{\frac{2.3^2}{40}+\frac{2.9^2}{55}}}}=-0.936  

The p value can be founded with this formula:

p_v =P(z  

Since the p value is higher than the significance level provided of 0.05 we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean for the Gibbs brand is significantly lower than the true mean for the competitor

5 0
2 years ago
What is 1/999 as a decimal ​
juin [17]

Answer:0.001001001001001

Step-by-step explanation: I have no idea. just put it in a calculator

5 0
2 years ago
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I WILL GIVE BRAINLIEST Draw the line of reflection that reflects △ABC\triangle ABC△ABCtriangle, A, B, C onto △A′B′C′\triangle A'
Bogdan [553]

Answer:

See diagram attached.

Step-by-step explanation:

The line of reflection of preimage ABC reflected onto image A'B'C' can be found by the perpendicular bisector of lines joining the corresponding points of the image and preimage, for example, AA', or BB'.

See diagram attached.

3 0
2 years ago
P(multiple of 6 / 2-digit number)
Ne4ueva [31]

Answer:

positive 2 digit nos range from 10 to 99 that consists of 90 population size the number of 2 digit nubers that are a multiple of 6 is: 15 listed as ... the number of 2 digit nubers that are a multiple of 6 is: 15 ... P(two digit multiple of 6) = 15/90 = 1/6

Step-by-step explanation:

5 0
2 years ago
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