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{"ops":[{"insert":"1.A politician engaged the services of a private opinion pollster to determine the sample size needed among his\/her constituents to interview about their perceptions on the freedom of information bill. Previous polls revealed that approximately 62.5% are in favor of the bill. The politician adopted the 0.95 level of confidence and off the population value by at most 0.02. How many respondents are included in the sample?\n2.A transportation company wants to know the amount of time it takes for a bus to travel from one bus stop to the next. From past observations, the standard deviation is 5 hours. \na. How many measurements are needed in order to be 95% certain that the maximum error estimate will not exceed 1 hour?\nb. What sample size is required for a maximum error if 2 hours?\n"}]}
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