Polly Petunia is Chief Horticulturalist for the Southwestregion, encompassing Arizona, New Mexico, and Texas. She wants tosurvey amateur gardeners in her region to determine what, if any,water conservation practices they employ in their home gardening.Polly sends her survey to 150 randomly selected gardeners in eachstate. Polly is using: a)purposive sampling,b)proportionalstratified sampling,c)systematic sampling,d)stratified randomsampling. which is correct a,b,c,or d
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