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Simon, has just begun her new job as a Manager on the sales force of a...

Simon, has just begun her new job as a Manager on the sales force of a very

reputable company. In a sample of 20 sales calls it was found that she closed the contract

for an average value of 120 dollars with a standard deviation of 16dollars. Test at 5%

significance that the population mean is at least 100 dollars against the alternative that it

is less than 100 dollars. Company policy requires that new members of the sales force

must exceed an average of $100 per contract during the trial employment period.

(Marks 9)

  1. Formulate the hypotheses

  1. Calculate the test statistics

  1. Can we conclude that Simon has met this requirement at the significance level of 95%?
math   Statistics-And-Probability   
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Simon, has just begun her new job as a Manager on the sales force of a very reputable company. In a simple of 20 sales calls it was found that she close the contract for an average value of 120 dollars with a standard division of 16 dollars.Test at 5% significance that the population mean is at 100 ....

=> Given data :-

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