Question: consider the following sample data with mean and standard deviation...
Question details
Consider the following sample data with mean and standard deviation of 18.1 and 7.4, respectively. (You may find it useful to reference the appropriate table: chisquare table or F table)
Class  Frequency  
Less than 10  33  
10 up to 20  88  
20 up to 30  69  
30 or more  13  
n = 203 
b1. Calculate the value of the test statistic. (Round the z value to 2 decimal places, all other intermediate values to at least 4 decimal places and final answer to 3 decimal places.)
