Statistics

MGMT 900 BUSINESS RESEARCH AND STATISTICS ASSIGNMENT:.# 1 1, EE TV Sales Store A: average:12, Standart disagreement: 4, X (Stock): 18 Store B : Mean: 9, Standart deviation: 3, X (Stock) :14 For parentage A, using the NORMDIST office in stand knocked break(p); we reach 0,933 To sustain out the probability of trial out of pullulate, 1 0,933 = 0,067 For stack away B, 1 0,952= 0,048 which is smaller than 0,067 interject A has the higher probabilitiy of running out of stock. (we can enlighten the problem using the standart formula dist. method, for descent A, Za= (18-12)/4= 1,50 for STORE B, Zb= (14-9)/3= 1,67 smaller the Z value, higher possiblity of running out of stock, which is for STORE A.) Minimum material body of TV for the % 2 chance of running out of stock; Using the NORMINV operation; For STORE A, NORMINV(0,98,12, 7) = 20,2 => marginal 21 TV For STORE B, NORMINV (0,98, 9, 3) =15,2 => minimum 1 6 TV 2, Determine % 90 confidence fallback for the real misbegotten get of legal proceeding per twenty-four hour period that employees spend dealing with spam. S; sample standart deviation=14 n; sample size = 117 X; sample consider = 6,5 (1-?)(100) % = 0,90 (confidence interval) ?; 0,1 Sx= S/?n = 14 / ?117= 1,294 The (1-?)(100) % confidence Interval for µ is [X - t ?/2 (n-1).Sx, X + t ?/2 (n-1).

Sx] Using TINV give way for calculating t ?/2 (n-1) = TINV(?=0,1, 116) = 1,658 = [6,5 (1,658).(1,294) , 6,5 + (1,658).(1,294)] = [4,36 , 8,64] 3, a) Using the KStat Univariate statistics habitation _prices Mean499736,8421 measuring rod dev iation112224,8182 standard error of the mea! n12873,06952 number of observations76 t-statistic for computing 95%-confidence intervals1,9921 b) % 95 confidence interval for the true mean of the average home prices X= 499.736,8 Sx= 12.873 t= 1,9921 interval: [X - t.Sx, X +t.Sx] = [499.736,8 -25.644,4 , 499736,8 + 25.644,4] = [474.092,4 , 525.381,2] c) revenue enhancement at 1 % of home price, Tax revenues for 2285 houses at 95 % confidence...If you want to get a respectable essay, order it on our website: OrderEssay.net

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