Question: Will each of the following increase, decrease, or have no effect on the value of a test statistic for the one-sample z test? (a) The

Will each of the following increase, decrease, or have no effect on the value of a test statistic for the one-sample z test?
(a) The sample size is increased.
(b) The population variance is decreased.
(c) The sample variance is doubled.
(d) The difference between the sample mean and population mean is decreased.

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