Biology Forums - Study Force

The confidence interval is
 a. a measure of the variation in responses for continuous measures.
  b. the level of error related to the probability of rejecting the null hypothesis.
  c. a counting of the number of cases that fall into the various response categories.
  d. a projection of the range within which a population parameter will lie at a given level of confidence based on astatistic obtained from an appropriately drawn sample.
 e. the arithmetic mean value across all responses for a variable.

Question 2

3M has introduced a new sponge that has an antimicrobial polymer designed to kill bacteria and germs and reduce the odors associated with wet sponges. This is best thought of as an example of a
 a. cannibalization product.
  b. continuous innovation.
  c. dynamically continuous innovation.
  d. discontinuous innovation.
  e. hedonically schematic innovation.

Question 3

A researcher had calculated the sample chisquare test statistic to be equal to 2 = 7.71 . For an alpha level of 0.10
  and 4 degrees of freedom, the critical value of the chi-square statistic is 7.78 . The appropriate conclusion is that the
 a. Sample result is likely to be attributed to chance alone.
  b. Null hypothesis should not be rejected.
  c. Null hypothesis should be rejected.
  d. Both a and b.
  e. Alternative hypothesis is true.

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