The data below represents the amount that a sample of fifteen customers spent for lunch ($) at a fast-food restaurant:
8.42 6.29 6.83 6.50 8.34 9.51 7.10 6.80 5.90 4.89 6.50 5.52 7.90 8.30 9.60
at the 0.01 level of significance, is there evidence that the mean amount spent for lunch is different from $6.50? follow and show the 7 steps for hypothesis testing. determine the p-value and interpret its meaning. what assumption must you make about the population distribution in order to conduct the test in part a? is the assumption valid?