According to a spokesperson for General Mills, the company’s “cents-off” coupon offers are designed to get people to buy their products and their refund offers (money returned with proof of repeated purchases) are designed to encourage people to continue buying their products. In a national survey conducted by Nielsen Clearing House in 1979 65% of the respondents indicated that they used cents-off coupons when grocery shopping. In a 1980 survey, the Nielsen organization found that 76% of those surveyed used cents-off coupons (“A Penny Refunded is a Penny Earned,” Minneapolis Star, Nov.29, 1981. P. 7B). Suppose the 1980 survey consisted of a random sample of 100 shoppers of whom indicated that they used cents-off coupons. Use this information to determine whether the percentage of shoppers using coupons in 1980 is significantly greater than 65%. Use =.05.
According to a spokesperson for General Mills, the company’s “cents-off” coupon offers are designed to get people to buy their products and their refund offers (money returned with proof of repeated purchases) are designed to encourage people to continue buying their products. In a national survey conducted by Nielsen Clearing House in 1979 65% of the respondents indicated that they used cents-off coupons when grocery shopping. In a 1980 survey, the Nielsen organization found that 76% of those surveyed used cents-off coupons (“A Penny Refunded is a Penny Earned,” Minneapolis Star, Nov.29, 1981. P. 7B). Suppose the 1980 survey consisted of a random sample of 100 shoppers of whom indicated that they used cents-off coupons. Use this information to determine whether the percentage of shoppers using coupons in 1980 is significantly greater than 65%. Use =.05.
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