2 O/0.12 points| Previous Answers DevoreStaro 1.E.003 Consider the population co

Question

2 O/0.12 points| Previous Answers DevoreStaro 1.E.003 Consider the population consisting of all computers of a certain brand and model, and focus on whether a computer needs service while under warranty (a) Pose several probability questions based on selecting a sample of 300 such computers. (Select all that apply.) How likely is it that more than half of the sampled computers will need or have needed warranty service? What is the number of computers that will need warranty service in the population? How many more than half the population of computers will need warranty service? What is the expected number among the 300 that need warranty service? How likely is it that the number needing warranty service will exceed the expected number by more than 10? (b) What inferential statisties question might be answered by determining the number of such computers in a sample of size 300 that need warranty service? Does the population provide compelling evidence for concluding that more than 10% of the sample computers need warranty service? Can we conclude that the population will have the same percentage of warranty service as the sample needed? Suppose that 45 of the 300 sampled needed warranty service. How confident can we be that the proportion of sampled computers needing warranty service is between S and 22? Suppose that 45 of the 300 sampled needed warranty service. How confident can we be that the proportion of all such computers needing warranty service is between 0.08 and Does the sample provide compelling evidence for concluding that more than 10% of all such computers need warranty service? Need Help? manna Linton tel

Explanation / Answer

a.
Probability question using sample to determine population parameters
In this we will talk about population estimation on the basis of sample result.

Option 1 and Option 4 are incorrect as these are asking estimation of sample which is not required to be estimated as it should be known

Option 2,3 and 5 request population estimation hence correct choice for answer

b.
Inferential statistics uses sample data to determine population parameters. Thus, we need to predict population outcome on the basic of sample result.

Option 1 is not correct as population can't provide any estimate. We need to find population estimate and we have sample result

Option 3 is incorrect as proportion = number of outcomes/total number of events (value should be less than or equal to 1) making option 4 as correct choice

Option 2,5 analyse sample outcome to predict population outcome.

Thus, correct choice Option 2,4,5

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