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Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for every salesperson in the organization for the most recent fiscal

Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for every salesperson in the organization for the most recent fiscal year.

SalespersonSales Amount ($1000)SalespersonSales Amount ($1000)Joseph148Wei466Jennifer231Samantha411Phillip546Erin299Stanley329Dominic322Luke294Charlie189Lexie193Amol212Margaret367Lenisa414(a)

Compute the mean (in $), variance, and standard deviation (in $) for these annual sales values. (Round your answers to the nearest whole number.)

mean$variancestandard deviation$

(b)

In the previous fiscal year, the average annual sales amount was $300,000 with a standard deviation of $95,000. Discuss any differences you observe between the annual sales amount in the most recent and previous fiscal years.

The mean sales amount has

---Select---

decreased

increased

not changed

from the previous to most recent fiscal year. The amount of change is

---Select---

tiny

large

compared to the standard deviation in either fiscal year. Therefore, there is a strong likelihood that

---Select---

this change is the result of simple randomness.

there is a smaller demand for these products in the most recent year.

there is a greater demand for these product in the most recent year.

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