Researchers studies the effect of a fertilizer on radish sprout growth. They randomly selected some radish seeds to serve as controls, while others were planted in aluminum planters to which fertilizer sticks were added. Other conditions were held constant between the two groups. The following table shows a summary of the heights of plants (in cm) 2 weeks after germination Perform a two-sample (pooled) test to investigate whether the average population height of plants is significantly different between the two groups at 5% level. Step 1: H0:_____________________ and Ha: _____________________ Significance level α=_____________ Step 2: List and verify necessary data conditions and compute an appropriate test statistic: Data Conditions: _____________________________________________________________________________________________ ___________________________________________________________________________________________________________________ Step 3: Decision Rule: Reject H0 if ___________________
: Researchers studies the effect of a fertilizer on radish sprout growth. They randomly
selected some radish seeds to serve as controls, while others were planted in aluminum planters to
which fertilizer sticks were added. Other conditions were held constant between the two groups. The
following table shows a summary of the heights of plants (in cm) 2 weeks after germination
Perform a two-sample (pooled) test to investigate whether the average population height of
plants is significantly different between the two groups at 5% level.
Step 1: H0:_____________________ and Ha: _____________________ Significance level α=_____________
Step 2: List and verify necessary data conditions and compute an appropriate test statistic:
Data Conditions: _____________________________________________________________________________________________
___________________________________________________________________________________________________________________
Step 3: Decision Rule: Reject H0 if ___________________
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