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Mathematics, 29.04.2021 04:30 dxpebetty64

g Cell phones. Following are last year's local monthly bills, in dollars, for a random sample of 50 cell phone users. 32.88,31.09.16.13,104.2,47.65,116.9 6,61.97,43.74,13.52,15,37,30.09,16. 93,44.67,28.08,64.68, 16.17,28.04,57.67,14.62,61.32,35.64 ,88.95,50.48,16.41,16.56,13.48,27.1 0,15.50,19.95,23.45,4 6.24,41.8,49.35,81.16,28.80,32.48,2 8.95,31.60,35.6,24.74,44.82,51.62,4 2.04,22.43,46.54,48.3 2,24.53,77.21,15.12,126.84 At the 5% significance level, do the data provide sufficient evidence to conclude that last year's mean local monthly bill for cell phone users has decreased from the 2001 mean of $47.37

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