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san4es73 [151]
2 years ago
11

Paloma ran 3 3/4 miles around the school track. If each lap is 1/2 mile, how many laps did she run?

Mathematics
1 answer:
Ratling [72]2 years ago
7 0

Answer:

9

Step-by-step explanation:

It is 9 because 1/2 goes into 3, 6 times, and then 3/4 divided by 1/2 is 1 1/2 so 1/2 goes into 3/4 1/12 times, so then figure out how mnay 1/2 is in 1 1/2 and youll get 3 so 6 plus 3 equals 9 :)

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Masteriza [31]

Answer:

The proportions differ from those reported in the survey.

Step-by-step explanation:

The Chi-square goodness of fit test would be used to determine whether the proportions differ from those reported in the survey.

The hypothesis for the test can be defined as follows:

<em>H</em>₀: The proportions does not differ from those reported in the survey.

<em>Hₐ</em>: The proportions differ from those reported in the survey.

Assume that the significance level of the test is, α = 0.01.

The Chi-square test statistic is given by:

\chi^{2}=\sum\limits^{n}_{i=1}{\frac{(O_{i}-E_{i})^{2}}{E_{i}}}

Consider the Excel sheet provided.

The Chi-square test statistic value is 191.32.

The <em>p</em>-value of the test is:

p-value=P(\chi^{2}_{(n-1)}>191.32)\\\\=\text{CHISQ.DIST.RT}(191.32,2)\\\\=0.0000

The <em>p</em>-value of the test is very small. The null hypothesis will be rejected at 1% level of significance.

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5 0
3 years ago
Help me please. <br>20+(-16)4
Sphinxa [80]
P.E.M.D.A.S
First , you multiply.

200+(-16)4
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Since they have different signs, you subtract and keep the sign of the greater absolute value.

200+(-64)=136
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77julia77 [94]
Answer is b hope this helps
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Answer:

Step-by-step explanation:

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2 years ago
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