Posted by **jack** on Saturday, May 14, 2011 at 8:33am.

In conducting research that looks at differences in populations, samples are used for numerous reasons. Using entire populations in a test is difficult, so various sampling techniques are applied. In situations in which the population variance is unknown, the Student t distribution is often used. To use this distribution, certain assumptions must be made. Which of the following statements is not correct?

a. 0 The t distribution is a family of distributions.

b. 0 It is a symmetrical, mound shape distribution.

c. 0 It is a continuous distribution.

d. 0 It has less spread than the standard normal distribution.

- What??? -
**Writeacher**, Saturday, May 14, 2011 at 8:58am
Please type your __subject__ in the **School Subject** box. Any other words, __including obscure abbreviations__, are likely to delay responses from a teacher who knows that subject well.

- res342 -
**jack**, Saturday, May 14, 2011 at 9:23am
I need to know what the correct anwser is a or b or c or d

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