Please only provide correct and accurate answers! Otherwise don't attempt!

discuss all the following questions in details based on the extract provided

You are taking a multiple choice test for which you have mastered 70% of the material.

Assume this means that you have a 0.7 chance of knowing the answer to a random test question, and that if you don't know the answer to a question then you randomly select among the four answer choices. Finally, assume that this holds for each question, independent of the others.

(a) What is your expected score (as a percent) on the exam?

Let p be the probability of getting a random question correct. You likely found p in part

(a), but in any case you should assume 0.7 < p < 0.9.

In parts (b), (c) and (d) you can just use the letter p for this probability.

(b) If the test has 10 questions, what is the probability you score 90% or higher? (Do not simplify the expression you get.)

(c) What is the probability you get the first 6 questions on the exam correct? (Again, do not simplify the expression you get.)

(d) Suppose you need 90% to keep your scholarship. Would you rather have a test with

10 or 100 questions? Why? (Your answer only needs to be one sentence long.)

EXTRACT

Note that there are many other ways to create visible light; fires, incandescent light bulbs, fluorescent light bulbs, gas discharge tubes, chemical reactions; but none of these ways create visible light in a controlled way (i.e. coherent visible light) such that a lot of information can be carried on the light waves, similar to as is done with radio waves.In summary, if you want a radio antenna to emit visible light, just heat it up. If you want a traditional antenna to emit visible light in a controlled way such that you can transmit information, you are out of luck. Fortunately, there are other devices that can transmit information using visible light, the most practical of which is the laser.

all across the world there have been a desire to monitor the habitats for various pathogens and it is in fact a key case for topic amongst nurses; answer the following questions to shed more light on such a scenario

1.how is the grass thepredominate vegetation in grassland ecosystem?

2.could the desserts be only hot?why /why not

3.what features of the Antarctica render it vulnerable to the biggest desert in the world

5. . Where can we see Indira Gandhi Canal?be specific to the location

6.what Are the contribution of the Bishnoi tribe in protecting the trees from several generation in Rajasthan?

4.link the interconnection of theAeolian with thesurface of Thar desert

7.derive a plan to conserve the desert ecosystems

8.why is there so much unproductivity in thedesert region

9.what re the elements of the scantyvegetation that make them socially responsible?

10.justify;Desert and semi-arid regions have many organisms such as insects, birds and animals.