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zimovet [89]
3 years ago
15

A study of​ 420,095 cell phone users resulted in 135 who developed cancer of the brain or nervous system. When comparing this sa

mple group to another group of people who did not use cell​ phones, it was found that there is a probability of 0.512 of getting such sample results by chance. What do you​ conclude?
Mathematics
1 answer:
faltersainse [42]3 years ago
7 0

Answer:

Results of the original study are inconclusive

Step-by-step explanation:

A probability of 0.512 that the results obtained in the controlled sample could be obtained by chance, means that it is more likely than not ( P>0.50) to get this results by chance. What this means is that the results of the original study linking brain cancer development to cell phone use are inconclusive.

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cricket20 [7]

Answer:

see below

Step-by-step explanation:

Area of a trapezoid:

((base 1 + base 2) x h) / 2

First one:

(7 + 13) x 6 / 2

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Second one:

(45 + 55) x 22 / 2

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8 0
3 years ago
For the transformation T, what is T-1? T : (x, y) (x + 4, y + 3) T-1: (x, y)
gavmur [86]
<span>The answer is:
T : (x, y) (x + 4, y + 3) 
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8 0
3 years ago
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I really dont get it halp ;-;
erik [133]

Answer:

II

Step-by-step explanation:

This would be easier to explain to you on a graph, but I shall do the best I can in text format.

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So this means that all the pairs with both positive values are in quadrant I, all the pairs with a positive rational number but a negative irrational number are in II, etc.

If you have a graph, you can simply count along the number line to find the answer, so in this case, starting as always at (0, 0), move 6 units to the right and then eight units down, where you end up in the lower righthand quadrant, which is II.

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6 0
3 years ago
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Mariana [72]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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An alloy weighing 30 lbs. is 11% tin. The alloy was made by mixing a 15% tin alloy and a 9% tin alloy. How many pounds of each a
Roman55 [17]

Answer:

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Step-by-step explanation:

x: 9%

y: 15%

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