A city wants to estimate the standard deviation of the time it takes a bus to travel between two stops in a city. To develop an estimate for the standard deviation, the city has collected a random sample of the times required for 18 trips. The sample standard deviation is 4.9 minutes. Based on these data, what is the 95% confidence interval estimate for the true population standard deviation. Ominutes sos minutes (Round to two decimal places as needed.)

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.