Some normal curves are more peaked or flatter than others. (True or false?)

Some normal curves are more peaked or flatter than others.
 
  Indicate whether the statement is true or false

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A study is conducted to test the hypothesis that cognitive behavioral therapy is more effective than eclectic therapy in reducing the number of future incidents of child neglect among substance abusing parents? Which of the following is the dependent variable in this study?
 
  a. The number of future incidents of abuse
  b. Type of therapy
  c. Eclectic therapy
  d. Substance abuse

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In a normal distribution, approximately 99 percent of all the cases fall between the x-axis values that are one standard deviation less than the mean and one standard deviation greater than the mean.
 
  Indicate whether the statement is true or false