Actual proportion of cell phone

Reference no: EM131026324

A survey was conducted to determine what adults prefer in cell phone services. The results of the survey showed that 73% of cell phone users wanted e-mail services, with a margin of error of }4%. What is meant by the phrase "}4%"?

a. They estimate that 4% of the surveyed population may change their minds between the time that the poll was conducted and the time that the results were published.

b. There is a 4% chance that the true percentage of cell phone users who want e-mail service will not be in the interval (0.69, 0.77).

c. Only 4% of the population was surveyed.

d. It would be unlikely to get the observed sample proportion of 0.73 unless the actual proportion of cell phone users who want e-mail service is between 0.69 and 0.77.

e. The probability is .04 that the sample proportion is in the interval (0.69, 0.77).

Reference no: EM131026324

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