A few years ago, as an advertising campaign, the Nabisco Company announced a “1000 Chips Challenge,” claiming that every 18-ounce bag of their Chips Ahoy! cookies contained an average of 1000 chocolate chips. Dedicated statistics students at UW-Madison randomly selected bags of cookies and counted the chocolate chips. According to the analysis below, which statement is correct or accurate:

A sample of n = 100 people is classified into four categories.  If the results are evaluated with a chi-square test for goodness of fit, what is the df value for the chi-square statistic?

Which of the following is true for most distributions?

Which of the following variables is NOT a quasi-independent variable?

Noah took 6 tests over the course of the school year for a stats class. He was wondering what his mean score was for all 6 tests. He got 88, 98, 100, 72, 94, and 65. Find the mean of the data.

The values in the following matrix are treatment means from a two-factor study. One of the means is missing. What value for the missing mean would most likely result in main effect for factor A but not factor B?     B1 B2 A1 19 15 A2 12 ?

What is the z score for a score of 38, if the population mean is 30 and the standard deviation is 4?

A sample of n = 25 scores has M = 20 and s2 = 9.  What is the sample standard deviation?

The following table shows the results of a between-subjects ANOVA. Based on this table, what is the value for eta squared (η2), the percentage of variance accounted for?      Source                         SS        df        MS            Between Groups   26         2          8                Within Groups       74        21         4                Total                           100        23       

A research study wants to know if more time spent on the internet increases the amount of money spent on online shopping. 20 participants are asked to spend time online shopping. Ten people are told to be online for 1 hour, and the other ten are told to be online for 1.5 hours. The two groups are then compared to see which spent the most money. What is the dependent variable?