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Distributed with the population standard deviation

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Reference no: EM132483335

Consider the following test:

A random sample of size 23 is obtained from a population that is known to be normally distributed with the population standard deviation equal to 12.2. If the sample mean happened to be 52.1, compute the test statistic.

Round the answer to two decimal places. 

Consider the following test performed with the level of significance 0.05:

A random sample of size 39 is obtained from a normally distributed population. The population standard deviation is equal to 32.6. The sample mean happened to be 104.8. For this hypothesis test, what will be the critical value (the relevant z-alpha)?  Hint: Watch the sign - the critical value can be negative or positive. 

Round the answer to three decimal places. 

Reference no: EM132483335

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