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26. Meals. A college student on a seven-day meal plan reports that the amount of money he spends daily on food varies with a mean of $13.50 and a standard devia- tion of $7. a) What are the mean and standard deviation of the amount he might spend in two consecutive days? b) What assumption did you make in order to find that c) Estimate his average weekly food costs, and the stan- d) Do you think it likely he might spend less than $50 in standard deviation? Are there any reasons you might question that assumption? dard deviation. a week? Explain, including any assumptions you make in your analysis.
math   Statistics-And-Probability   
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0 Girce ven On浇Counge sludrat on a seven day rnel Plan egests that, amount of meney Sce,ds o mean : +13.50 (a) Mean and Stands eviation he amoun f2em thegiven data. money peet daily on fed $13s, mean amouu 13.5 135 :. mean dmoud speud on lwo dhys(4), 十 (q) eviatioo tuo (b) Assuption ohsenving the oints,e Can S the Vasiables ase ind -io take this aslumption i aasianethe Tn this Case, e need t estmate his saesaap oerkly food ads ad standard deviken .« wee viaton i.e renmgan the weekly Cats ,Uean (1) en 13.5 94.5 mean o loee asianfe the wee e^ qive) Standard devialon朗: 6·12- 49 Cacts Spend les

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