In a sample of 13 randomly selected high school seniors, the mean score on a standardized test was 1198 and the standard deviation was 170.0. Further research suggests that the population mean score on this test for high school seniors is 1013. Does the t-value for the original sample fall between - to 99 and to 99? Assume that the population of test scores for high school seniors is normally distributed. The t-value of t= (Round to two decima fall between - to 99 and to 99 because to 99 = d.) does does not

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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.