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kramer
2 years ago
8

student measuring how gasoline prices change records the cost of gas at 10 randomly selected stations in her hometown. One week​

later, she records the price again at the same 10 stations. Are these data paired or​ independent? Choose the correct answer below. Independent Paired
Mathematics
1 answer:
k0ka [10]2 years ago
8 0

Answer:

We conclude that he used a paired two-sample t-test.

Step-by-step explanation:

We know that the student measuring how gasoline prices change records the cost of gas at 10 randomly selected stations in her hometown. One week​ later, she records the price again at the same 10 stations.

We conclude that he used a paired two-sample t-test.

Because at each gas station, the student measured the price of gas twice.

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A drinking glass has sides following the shape of a hyperbola. The minimum diameter of the glass is 45 millimeters at a height o
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Answer:

The answer is a= 128.95 and b = 14.75

Step-by-step explanation:

Solution

Given

let the equation of the hyperbola be denoted as  x2/a2 - y2/b2 = 1 here, we will  consider the foci on the x-axis. All units are considered to be in mm.

From question stated, with x and y coordinates represents height and radius respectively,

Then,

When  x = 83 + a, y is = 45/2 = 22.5 and

At x = 180 + a, y  is = 57/2 = 28.5

It is important to know that, the height is estimated from the focus so we a a is included to the heights.

Thus,

(83+a)2/a2 - 22.52/b2 = 1 and (180+a)2/a2 - 28.52/b2 = 1

By using a calculator we have, a = 128.95 and b = 14.75

Therefore a= 128.95 and b = 14.75

3 0
2 years ago
The mean temperature for the first 4 days in January was 1°C. 
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-4 degrees I think.
5 0
2 years ago
A study of 31,000 hospital admissions in New York State found that 4% of the admissions led to treatment-caused injuries. One-se
vovikov84 [41]

Answer:

Step-by-step explanation:

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P(injury) = 4%

P(negligence) = 1/4 = 0.25

We need to find probability (injury)(negligence)

P(injury) * P(negligence) = 0.04*0.25 = 0.01

b) probability a person admitted to the hospital will die from a treatment-caused injury

P(injury) = 4%

P(death) = 1/7

P(Injury) *P(death) = 0.04/7 = 0.00571

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P(claim) = 1/7.5

P(payment) = 1/2

P(claim)*P(payment) = 1/7.5 * 1/2 = 0.06

7 0
2 years ago
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julsineya [31]
You would find the answer by solving shxndbsinsnsndidndnid dbdoamsidbdhdbd
8 0
2 years ago
Using only the values given in the table for the function f(x) = –x3 + 4x + 3, what is the largest interval of x-values where th
nikklg [1K]
I assume you mean -x^3 + 4x + 3 
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4 0
2 years ago
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