THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 122

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A large department store records the number of returns per day in women's dresses for reasons such as wrong size;husband didn't like it,color,etc.The manager of the women's dresses department recalls from her statistics class in college that the Poisson distribution might describe such events.A random sample of 150 days is taken.The number of returns per day in the sample as well as the observed frequencies is shown in the table below:

She tests the hypothesis that returns per day are Poisson distributed with a population mean equal to 1.90.Her significance level is 0.05
-State the appropriate conclusion at the 0.05 significance level.

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Definitions:

Iodine

A chemical element (I) that is a dark-gray or purplish-black solid at room temperature and is used in nutrition, medicine, and photography.

Mordant

A substance used in dyeing and printing that fixes dyes to fabrics by forming an insoluble compound with the dye.

Host Organism

An organism that provides nourishment and shelter to a parasite or another organism residing within it.

Parasite

An organism that lives on or in a host organism and gets its food at the expense of its host.