During 1 week an overnight delivery company found that the weights of its parcels were normally distributed, with a mean of 20 ounces and a standard deviation of 5 ounces. (a) What percent of the parcels weighed between 10 ounces and 25 ounces? (Round your answer to one decimal place.) % (b) What percent of the parcels weighed more than 35 ounces? (Round your answer to two decimal places.)

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A: Apologies for the inconvenience.   We graph the given equations using graphing calculator.

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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.