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Black_prince [1.1K]
3 years ago
11

Early formulations of this medium used a smaller amount of carbohydrate and occasionally produced false (pink) results after 48

hours. this phenomenon is called a reversion.
Biology
1 answer:
Over [174]3 years ago
6 0

<span>Inoculate a PR broth is a medium that used smaller amount of carbohydrate and may result to occasionally false pink after 48 hours. It is known to have slow growing fermenter that may indicate false negativity and also poor sensitivity with the result of the test.</span>

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What are the advantages of using digital waves over analog signals?
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Answer:

What are the advantages and disadvantages of digital over analog?

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“Advantages of Digital Communication. The effect of distortion, noise, and interference is much less in digital signals as they are less affected. Digital circuits are easy to design and cheaper than analog circuits. The hardware implementation in digital circuits, is more flexible than analog.” In general, digital is far easier to handle and has (virtually) unlimited precision (limited only by hardware constraints and compute time).

Analog computation takes place at a significant portion of the speed of light (the time it takes for an electrical signal to traverse a circuit). However, it is almost impossible to correct completely for noise, and precision is limited to three (or at most four significant digits).

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3 years ago
You are conducting a case control study to determine if an association exists between melanoma and indoor tanning. From a statew
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Answer:

a. Odds ratio = 1.58

b.  Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning

Explanation:

For case  study                                                  

Let 'a'  represent the total population of people with melanomia = 696                                                      

Let 'b' represent the total number of people with melanomia exposed to indoor tanning  =  1107 – 696 = 411 people

For  control study

Let 'c' represent the total population = 1500

Let 'd' represent the total number of people not exposed to indoor tanning = 1500 - (0.428 * 1500)

                                                          =  1500 - 723

Total number of people not exposed to indoor tanning   = 777 people

                                                       

a. Odds ratio = (a/b) / (d/c) = (696/411) / (777/723)

                                                = 1.69 / 1.07 = 1.58

b. Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning.

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