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Keith_Richards [23]
3 years ago
8

In point estimation a. data from the population is used to estimate the population parameter b. data from the sample is used to

estimate the population parameter c. data from the sample is used to estimate the sample statistic d. the mean of the population equals the mean of the sample
Mathematics
1 answer:
icang [17]3 years ago
4 0

Answer:

Option B) data from the sample is used to estimate the population parameter                  

Step-by-step explanation:

Point estimation:

  • Its is the process of getting a point estimate from a sample that describes a population parameter in the best way.
  • We calculate the unknown population parameter with the help of a sample drawn from the population.
  • It is similar to interval estimation.
  • In interval estimation we obtain an interval in which the population parameter may lie but in point estimation we obtain a single value which is the best approximation of population parameter.

Thus, the correct answer is

Option B) data from the sample is used to estimate the population parameter

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Part B. You'll need to be more specific. What I would do is show how the quantity (-2x+1)^4 is always nonnegative. This is because x^4 = (x^2)^2 is always nonnegative. So (-2x+1)^4 >= 0. The coefficient -10a is either positive or negative depending on the value of 'a'. If a > 0, then -10a is negative. Making h ' (x) negative. So in this case, h(x) is monotonically decreasing always. On the flip side, if a < 0, then h ' (x) is monotonically increasing as h ' (x) is positive.

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