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Masteriza [31]
1 year ago
12

Julius earns $47,800 a year working for a delivery service. He is single and pays $2,152.60 in state income

Mathematics
2 answers:
ludmilkaskok [199]1 year ago
8 0

Answer:

its the answer in photograph

DanielleElmas [232]1 year ago
3 0
2152.60/47800 = 0.045033472803347 round that up to however your teacher has asked ~ .045
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Answer:

We can claim with 95% confidence that the proportion of executives that prefer trucks is between 19.2% and 32.8%.

Step-by-step explanation:

We have a sample of executives, of size n=160, and the proportion that prefer trucks is 26%.

We have to calculate a 95% confidence interval for the proportion.

The sample proportion is p=0.26.

 

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.26*0.74}{160}}\\\\\\ \sigma_p=\sqrt{0.0012}=0.0347

The critical z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_p=1.96 \cdot 0.0347=0.068

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LL=p-z \cdot \sigma_p = 0.26-0.068=0.192\\\\UL=p+z \cdot \sigma_p = 0.26+0.068=0.328

The 95% confidence interval for the population proportion is (0.192, 0.328).

We can claim with 95% confidence that the proportion of executives that prefer trucks is between 19.2% and 32.8%.

3 0
2 years ago
at an amusement park, Robin bought a t-shirt for $8 and 5 ticket for ride. she spent a total of $23. How much did each ticket co
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Each ticket cost $3

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3 0
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Answer:

C

Step-by-step explanation:


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As you know that sum of complementary angles equal 90°

so,

7x + 11x = 90
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so,
option A is the correct one.
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2 years ago
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KIM [24]
For this case what you should do is use the following trigonometric relationship
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6 0
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