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when conducting a hypothesis test concerning the population mean, and the population standard deviation is known, the value of the test statistic is calculated as

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varshamittal029

We need to know about test statistic to solve the problem. The formula we will need to calculate test statistic is  (sample mean- population mean)/(standard deviation/[tex]\sqrt{size of sample}[/tex])

Test statistic is a number calculated by a statistical test. It describes how far the observed data is from the null hypothesis of no relationship between variables or no difference among sample groups. The test statistic can be calculated using the sample mean, the population mean and population standard deviation.

test statistic= (sample mean- population mean)/(standard deviation/[tex]\sqrt{size of sample}[/tex])

Therefore the formula to calculate the test statistic will be (sample mean- population mean)/(standard deviation/[tex]\sqrt{size of sample}[/tex])

Learn more about test statistic here:

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