Density curves to explain distributions of symmetric

Reference no: EM1316981

Q1) Sketch density curves that might explain distributions with fallowing shapes

a) symmetric, but with two peaks( i.e., two strong clusters of observations)

b) Single peak and skewed to the right

Q2) Net weights of sample of bottles filled by machine manufactured by Edne, and net weights of a sample filled by similar machine manufactured by Orno, Inc., are (in grams):

Edne: 5, 8, 7, 6, 9 and 7

Orno: 8, 10, 7, 11, 9, 12, 14 and 9

Q3) Testing the claim at 0.05 level mean weight of bottles filled by Orno machine is greater than the mean weight of bottles filled by Edne machine, determine the critical value?

a) -1.96

b) -2.837

c) -6.271

d) +3.674

e) None of the above

Reference no: EM1316981

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