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Snowcat [4.5K]
2 years ago
13

A fruit seller marks up all fruit he sells by 25% above the whole sale price he pay to the farmer. Write an equation that you co

uld use to determine the price of fruit sold by the fruit seller if you know the price he paid the farmer. Use x to represent the whole sale price and y to represent the selling price.
Mathematics
1 answer:
Irina18 [472]2 years ago
6 0

Answer:

x = 1.25y

Step By Step

whole sale price = x

selling price = y

since the whole sale price is 25% (0.25) more than the selling price,

x=y+y0.25, or x=1.25y

edit: pls consider giving me the Brainliest if this helped you thank you! ;)

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A researcher wants to find out if there is a significant difference between men and women in the average number of tattoos that
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Answer:

The correct option is (A).

Step-by-step explanation:

The p-value is well-defined as per the probability, [under the null-hypothesis (H₀)], of attaining a result equivalent to or more extreme than what was the truly observed value of the test statistic.

A small p-value (typically p < 0.05) specifies strong evidence against the null hypothesis (H₀), so the null hypothesis is rejected. A p-value less than 0.05 is considered as statistically significant.

A large p-value (p > 0.05) specifies fragile proof against the H₀, so the null hypothesis is failed to be rejected.

In this case the <em>p</em>-value of the test is,

<em>p</em>-value = 0.003

And the significance level of the test was,

<em>α</em> = 0.05.

p-value = 0.003 < <em>α</em> = 0.05.

The p-value less than the significance level of the test.

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The correct option is (A).

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3 years ago
The graph below represents the number of pieces of paper that are found in boxes. What is the constant of proportionality?
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12.5

Step-by-step explanation:

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Researchers conducted a study to find out if there is a difference in the use of ereaders by different age groups. randomly sele
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No, there is significant difference in the use of e readers by different age groups.

Given sample 1 ( 29 years old) n_{1}=628, p_{1}=7%, sample 2( 30 years old)n_{2}=2309, p_{2}=0.11.

We have to first form hypothesis one null hypothesis and other alternate hypothesis.

H_{0}:π1-π2=0

H_{1}:π1-π2≠0

α=0.05

Difference between proportions p_{1}-p_{2}  =-0.04

p_{d}=0.07-0.11=-0.04

The pooled proportion needed to calculate standard error is:

p=(X_{1} -X_{2} )/(n_{1} +n_{2} )

=(44+254)/(628+2309)

=0.10146

The estimated standard error of difference between means is computed using the formula:

S_{p_{1} -p_{2} }=\sqrt{p(1-p)/m_{1}+p(1-p)/n_{2}  }

=\sqrt{0.101*0.899/628+0.101*0.899/2309}

=\sqrt{0.000143+0.00003}

=\sqrt{0.000173}

=0.01315

Z= Pd-(π1-π2)/S_{p_{1} -p_{2} }

=-0.04-0/0.013

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This test is a two tailed test so the p value for this test is calculated as (using z table)

p value:2 P(Z<-3.0769)

=2*0.002092

=0.004189

P value< significance level of 5%.

Hence there is enough evidence to show the claim that there is a significant difference in the use of e readers by different age groups.

Learn more about hypothesis at brainly.com/question/11555274

#SPJ4

Question is incomplete as it also includes:

Significance level of 5%.

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Answer:

youbhave give me more information.

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