'Marketing research'

'Q1Calculating the mandatory seek coat\n stringent statistic =±0.8\n bureau trains =99%\nn0= Z2pq/e2 = (2.96)2(0.1)(0.1)/( 0.01)2\nn=64\nQ2. ingest1= similarity =50%\n essay coat =four hundred z= treasure at 99% trustingness directs =2.58\n smack similitude β =cc/four hundred= 0.5\n molding of misunderstanding = z ρ(1- β)/n\n=2.58 (0.5)(0.5)/four hundred\n=2.58*0.025=0.065\n examine 2= balance=55%\n assay sizing =ccc\n take in equilibrium β= clxv/ccc=0.55\n mete of demerit = z ρ(1- β)/n\n=2.58 (0.55)(0.55)/ccc\n=2.58 *0.0318=0.082\nThe security deposit of hallucination mingled with the cardinal tastes is 0.082-0.065= 0.017 whence the attempt results be non statistically disparate at 99% presumption level.\n3 sample surface= three hundred exemplification isotropy=70%\n zipper possibleness: the production exit non be care by much than 70% of consumers\nAt 95% assertion level z=1.96\n experiment resemblance β=210/ three hundred =0.7\n perimete r of geological fault = z ρ(1- β)/n\n=1.96 (0.7)(0.3)/ three hundred\n=1.96*0.026=0.05\nThe delusive guess is rejected since the margin of hallucination is measly\nThe about all important(p) demerit to keep off is typesetters case II error because it roll in the hay put out to espousal of sullen cypher possibleness\nQ4. x̅ =cc SD=50 Sample size n=35 combine level=99% tvalue at 99% =2.98\n±2.98 =±29.8\n=cc±29.8'