Mathematics, 13.03.2020 21:56 aroyalstudent
A recent survey of cell phone users indicated that 56 percent of the respondents prefer to use cell phones for texting rather than for making phone calls. A 95 percent confidence interval for the estimate of all cell phone users who prefer to use cell phones for texting has a margin of error of 3 percent.
Assume all conditions for inference have been met. Based on the confidence interval, which of the following claims is supported?
a. Less than half of all people prefer texting.
b. More than half of all people prefer texting.
c. At least 60 percent of all people prefer texting.
d. At least 75 percent of all people prefer texting.
e. At least 95 percent of all people prefer texting.
Answers: 2
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