7. When do creative people get their good ideas? Assume that the survey of 963 inventors gives the following information: Time of Day When Good Ideas Occur Time 6 A.M. – 12 noon Number of Inventors 281 12 noon – 6 P.M. 6 P.M.- 12 midnight 12 midnight- 6 A.M. Assuming that the time interval includes the left limit and all the times up to but not including the right limit, estimate the probability that an inventor has a good idea during the time interval from 6 A.M. to 12 noon. Write your answer as a fraction in simplest form. 120 320 242

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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.