A researcher takes a sample from a population and computes a statistic for the sample. Which of the following statements is correct?a. If the sample statistic overestimates the corresponding population parameter, then the statistic is biased.b. If the sample statistic underestimates the corresponding population parameter, then the statistic is biased.c. If the sample statistic is equal to the corresponding population parameter, then the statistic is unbiased.d. None of the above

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.