Question

In: Math

The table lists the sugar content of two types of apples from three different orchards. At...

The table lists the sugar content of two types of apples from three different orchards. At , test the claim that the sugar content of the apples and the orchard where they were grown are not related. Sugar Content Orchard 1 Orchard 2 Orchard 3 Apple Type 1 4 2 6 Apple Type 2 28 10 14

Solutions

Expert Solution

null hypothesis:Ho:  sugar content of apples and the orchard where they are grown are not related

alternate hypothesis: Ha: sugar content of apples and the orchard where they are grown are related

adding orchard and orchard 3 column into 1 to make expected frequency in each cell more then 5.

degree of freedom(df) =(rows-1)*(columns-1)= 1
for 1 df and 0.05 level of signifcance critical region       χ2= 3.841
Observed Oi orchard 1 orchard 2-3 Total
type 1 4 8 12
type 2 28 24 52
Total 32 32 64
Expected Ei=Σrow*Σcolumn/Σtotal orchard 1 orchard 2-3 Total
type 1 6.00 6.00 12
type 2 26.00 26.00 52
Total 32 32 64
chi square    χ2 =(Oi-Ei)2/Ei orchard 1 orchard 2-3 Total
type 1 0.6667 0.6667 1.333
type 2 0.1538 0.1538 0.308
Total 0.821 0.821 1.641

Decision: as test statistic is not in rejection region we fail to reject null hypothesis  

Conclusion:we do not have sufficient evidence to conclude that t sugar content of apples and the orchard where they are grown are related   


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