Sam has three identical tennis balls with a diameter of 2.7 inches. Determine the volume of all three tennis balls?
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Answer:
The upper critical value z₀ is 2.05.
Step-by-step explanation:
For a two-sided test like this (the mean can be significantlt greater or smaller than 7 to reject the null hypothesis), the critical values are the values of z that determine the boundaries of rejecting or not the null hypothesis.
If the significance level is 0.04, it means that there is a P-value of 0.02 for z larger than the upper critical value z₀.
If we look up in a normal distribution table, the z value that corresponds to this probability is z=2.05.
