ociologist randomly selects 381 females 15 to 19 years old and asks each to disclose her family structure at age 14 and whether she has had sexual intercourse. Use the results in the accompanying table to complete parts (a) through ( ow. Click the icon to view the data table of family structure and sexual activity. Compute the expected values of each cell under the assumption of independence. Parent and Stepparent Had sexual intercourse Both Biological or Adoptive Parents Single Parent Non-parental Guardian 43 34 59 Yes 34 20 40 87 No Round to two decimal places as needed.) Data table of family structure and sexual activity Both Biological or Adoptive Parent and Stepparent Non-parental Guardian Had sexual Single Parent intercourse Question Parents 64 87 59 34 20 Yes 43 40 No 34 Print Done
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
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