An experiment was performed to assess whether heavy metals

Chapter 15, Problem 38E

(choose chapter or problem)

An experiment was performed to assess whether heavy metals accumulate in plants grown in

soils amended with sludge and if there is an associated accumulation of those metals in aphids

feeding on those plants.6 The data in the accompanying table are cadmium concentrations (in

micrograms/kilogram) in plants grown under six different rates of sludge application for three

different harvests. The application rates are the treatments, and the three harvests represent

blocks of time.

a Is there sufficient evidence to indicate a difference in cadmium accumulation in plants grown in plots subjected to different levels of sludge application? Bound or determine the approximate p-value.

b What would you conclude at the \(\alpha=.01\) significance level?

Equation transcription:

Text transcription:

alpha=.01

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