Instruction 7-7
Online customer service is a key element to successful online retailing.According to a marketing survey,37.5% of online customers take advantage of the online customer service.Random samples of 200 customers are selected.
-Referring to Instruction 7-7,90% of the samples proportions symmetrically around the population proportion will have between ________% and ________% of the customers who take advantage of online customer service.
Correct Answer:
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Q119: Instruction 7.4
According to a survey, only 15%
Q120: Instruction 7-4
According to a survey,only 15% of
Q122: Instruction 7-6
According to an article,19% of the
Q124: Systematic samples are less efficient than stratified
Q126: Items or individuals in a judgement sample
Q128: Instruction 7-7
Online customer service is a key
Q157: If a simple random sample is chosen
Q172: A convenience sample is a type of
Q176: As a population becomes large,it is usually
Q179: A sample is always a good representation
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