Question: consider the following sample data with mean and standard deviation...
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: chi-square table or F table)
|Less than 10||33|
|10 up to 20||88|
|20 up to 30||69|
|30 or more||13|
|n = 203|
b-1. 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.)