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4. Suppose it is known that American adults sleep an average of 7.8 hours daily. You suspect that college students sleep less than this on average, so you collect a random sample of fifteen students at NCAT and get the following data on their typical daily sleep amount (in hours): 6.7 4.5 6.4 8.6 5.5 8.2 5.9 7.5 4.4 6.0 6.3 8.3 7.3 5.7 10.1 (a) Use this sample to see if there is sufficient evidence to conclude that the median amount of daily sleep for NCAT students is hypotheses, keeping thesi statistic value, p-value, and conclusion. below 7.8 hours (i.e. below the national average). Test the appropriate cance level at no more than 0.05. Give your decision rule, test holout 7 8 hours

math   Statistics-And-Probability   
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also we took a ample α 15-纯eden t :从ㄑ子 3-2 4 0.3 1. 8 510716 6.1294 2 2856 58子 R.0136 -1·24 -444 g.2 S.g -2.36 5. 5636 G..O 6.3 6-311623116 0.231 1.1Rろ 11-155 - 52 רי 876 YR : 43142 = =1. 57233 6.76-7.8 $7 833 N15 test stてtiợic국. O-05.214 fom statistical rble 553- -table Valua(1461) GS gnclesi - s,the Tnumbe a housr student at NCAT Gkuled Value ruble Nelue o( mon acce 8o accept Ho

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