A survey commissioned
by the Southern Cross Healthcare Group reported that 15 % of New
Zealanders consume...
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A survey commissionedby the Southern Cross Healthcare Group reported that 15 % of NewZealanders consume five or more servings of soft drinks per week.The data were obtained by an online survey of 2090 randomlyselected New Zealanders over 15 years of age
(a) What number ofsurvey respondents reported that they consume five or more servingsof soft drinks per week? You will need to round your answer.
XX =
(b) Find a 95%confidence interval ( ±±0.001) for the proportion of New Zealanderswho report that they consume five or more servings of soft drinksper week.
95% confidenceinterval is from to
(c) Convert theestimate of your confidence interval to percents ( ±±0.1)
% to %
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Solution Given thatn 2090 15 0151 1 015 085a x n 015
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