91Ó°ÊÓ

Marist College students grew tomato plants under different soil cover conditions. Groups of three plants each had one of the following treatments

• bare soil

• a commercial ground cover

• black plastic

• straw

• compost

All plants grew under the same conditions and were the same variety.

Consider the following data of soil covers to check the mean number of tomato production were same

To check the mean number of number of tomato production were same, use $Ti-83$calculator. For this, click on STAT$→$press1$→$Edit, then put data into the list$L_1,L_2,L_3,L_4,L_5$ the screenshot is given below:

Now Again press STAT $→$arrow over the TESTS$→$arrow down to ANOVA $→$Press var then select 1, press var then select 2, press var then select 3, press var then select 4 and press var then select 5 to fill the values of $L_1,L_2,L_3,L_4$and$L_5$ The screen shot is given as below:

Press ENTER, the screenshot of the obtained output is igiven below:

According to the above output, the P-value is $.02$. So, at the$5\%$level of significance null hypothesis will be rejected. Thus, mean number of tomato production were different in the five different type of soil cover.