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Nastasia [14]
3 years ago
9

6. Darnell weight of theof theuck. The weight empty truck was 7,860 pounds.When Darnellfilled the truck with his items, it weigh

ed6 tons. What was the weight in pounds ofthe items that Darnell placed in the truck?

Mathematics
2 answers:
Alex787 [66]3 years ago
8 0
 12000 so 1200+ 7,860=19860
Mademuasel [1]3 years ago
5 0
6 tons in pounds is 12000 so 1200+ 7,860=19860
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(Based on Q1 ~ Q3) According to the Bureau of the Census, 18.1% of the U.S. population lives in the Northeast, 21.9% inn the Mid
vekshin1

Answer:

We can therefore conclude that the geographical distribution of hotline callers could be the same as the U.S population distribution.

Step-by-step explanation:

The null Hypothesis: Geographical distribution of hotline callers could be the same as the U.S. population distribution

Alternative hypothesis: Geographical distribution of hotline callers could not be the same as the U.S. population distribution

The populations considered are the Midwest, South, Northeast, and west.

The number of categories, k = 4

Number of recent calls = 200

Let the number of estimated parameters that must be estimated, m = 0

The degree of freedom is given by the formula:

df = k - 1-m

df = 4 -1 - 0 = 3

Let the significance level be, α = 5% = 0.05

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from the chi square distribution table, the critical value = 7.815

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<u>Northeast</u>

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<u>West</u>

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Expected frequency of call = 0.233 * 200 = 46

x^{2} = \sum \frac{(O_{i} - E_{i})  ^{2} }{E_{i} } ,   i = 1, 2,.........k

Where O_{i} = observed frequency

E_{i} = Expected frequency

Calculate the test statistic value, x²

x^{2} = \frac{(39 - 36.2)^{2} }{36.2} + \frac{(55 - 43.8)^{2} }{43.8} + \frac{(60 - 73.4)^{2} }{73.4} + \frac{(46 - 46.6)^{2} }{46.6}

x^{2} = 5.535

Since the test statistic value, x²= 5.535 is less than the critical value = 7.815, the null hypothesis will not be rejected, i.e. it will be accepted. We can therefore conclude that the geographical distribution of hotline callers could be the same as the U.S population distribution.  

7 0
3 years ago
Neil has 3 partially full cans of white paint. They cantain 1/3 gallon, 1/5 gallon, and 1/2 gallon of paint. About how much pain
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Answer:

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Step-by-step explanation:

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Emma spent $38.22 on 3 dozen bagels and a gallon of iced tea. The price of the gallon of iced tea was $5.25. The following equat
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3d + $5.25 = $38.22
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Answer:

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Step-by-step explanation:

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Simplify the expression 12( a+ 5)
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Answer:

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Step-by-step explanation:

this is how i did it though:

12(a+b)

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3 years ago
Read 2 more answers
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