Summary of distribution of life expectancy

Reference no: EM1319664

Q1) Refer to CIA data, which reports demographic and economic information on 46 countries.

a) Determine the mean, median, and the standard deviation.

b) Write a brief summary of the distribution of life expectancy.

c) Select the variable GDP/cap.

d) Determine the mean, median, and the standard deviation.

Q2) Assume the USGA wishes to compare the mean distances associated with 4 different brands of golf balls when struck with driver. A completely randomized design is employed, with Iron Byron, the USGA's robotic golfer, using driver to hit a random sample of 10 balls of each brand in a random sequence. Distance is recorded for each hit, and results are shown below, organized by brand.

Brand A	Brand B	Brand C	Brand D
251.2	263.2	269.7	251.6
245.1	262.9	263.2	248.6
248	265	277.5	249.4
251.1	254.5	267.4	242
260.5	264.3	270.5	246.5
250	257	265.5	251.3
253.9	262.8	270.7	261.8
244.6	264.4	272.9	249
254.6	260.6	275.6	247.1
248.8	255.9	266.5	245.9

Perform a complete analysis by using ANOVA and a 5% significance level.

Reference no: EM1319664

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