(b) The followingdata pertain to weight increases (in pounds) of 10 cows taken f
ID: 2953598 • Letter: #
Question
(b) The followingdata pertain to weight increases (in pounds) of 10 cows taken froma large farm; 10,6,16,17,13,12,8,14,15,9.Can these weights bereasonably regarded as a random sample from a normal populationwith variance 11? Use =0.05
(a) A sampleof the weekly earnings record of 12 production employees of CompanyA has a variance of Rs. 15.90 while a similar sample of 15 recordsfor company B employees has a variance of Rs. 7.50. Is it safe toassume that there is less variance in the first population than inthe second? Use the significance level of 0.05.
(b )To test thesignificance of variation in the retail prices of a commodity inthree principal cities, Faisalabad, Sialkot, and Gujranwala; fourshops were chosen at random in each city and data is shown in thegiven table. Do the data indicate that the prices in three citiesare significantly different? Complete the ANOVA table and draw yourconclusion?
Sources of variation
d. f
Sums of Squares
Mean squares
F-ratios
Between samples
2
25
Within samples
86
Total
11
136
Sources of variation
d. f
Sums of Squares
Mean squares
F-ratios
Between samples
2
25
Within samples
86
Total
11
136
Explanation / Answer
Answer to the 1st question is go to your statistics note on page312. You will find the same question there which has been givenfrom the VU stats notes. Plz rate high :)
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