Purchase Solution

# Tip Standard Deviation

Not what you're looking for?

At the time she was hired as a server at a restaurant, Beth was told she could average more than \$20.00 a day in tips. Over the first 35 days she was employed, the mean daily amount of her tips was \$24.85, with a standard deviation of \$3.24. At the .01 significance level, can Beth conclude that she is earning an average of more than \$20.00 in tips?

##### Solution Summary

At the time she was hired as a server at a restaurant, Beth was told she could average more than \$20.00 a day in tips. Over the first 35 days she was employed, the mean daily amount of her tips was \$24.85, with a standard deviation of \$3.24. At the .01 significance level, can Beth conclude that she is earning an average of more than \$20.00 in tips?

##### Solution Preview

N (number of samples) = 35
<br>s (sample standard deviation ) = \$3.24
<br>m (sample mean) = \$24.85
<br>
<br>X is the random variable that describes tips earened in a day,
<br>u is the mean of X and
<br>
<br>We want to test the null hypothesis H0 : u = 20.00
<br>against ...

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.