As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence interval for the population variance o and the population standard deviation o. Use a 99% level of confidence. Assume that the population has a normal distribution. n= 16 s= 15 grains per gallon What is the confidence interval for the population variance o? (10.14 27.08) (Round to one decimal place as needed.) Inco

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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.