A marketing executive is investigating whether this year’s advertising campaign has resulted in greater mean sales compared with

Question

3 years ago

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A marketing executive is investigating whether this year’s advertising campaign has resulted in greater mean sales compared with

last year’s mean sales. The executive collects a random sample of 100 customer orders from a large population of orders and calculates the sample mean and sample standard deviation.

Physics

1 answer:

djverab [1.8K] · Answer 1 · 2022-10-22T07:44:37+03:00

We make use of a one-sample t-test for a population mean.

One-sample t-test for a population mean

Option B

<h3> Sample mean and Sample standard deviation</h3>

A Sample Standard Deviation is the root-mean square of the data minus the sample mean,

The sample mean is is the mean of the randomly selected sample

Therefore, For a data or sample where we have no information on population standard deviation and here only one sample group is compared, we make use of a one-sample t-test for a population mean

A one-sample t-test for a population mean