Which of the following is not true about the students t, Ask an Expert

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Which of the following is not true about the student's t distribution?

a. It has more area in the tails and less in the center than does the normal distribution.

b. It is used to construct confidence intervals for the population mean when the population standard deviation is known.

c. It is bell-shaped and symmetrical

d. As the number of degrees of freedom increases, the t distribution approaches the normal distribution.

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