If we are testing a hypothesis that a sample percentage does not differ from a hypothesized value at the 95% level of confidence,and we arrive at a z value of 1.98,we would fail to support the hypothesis.

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A z value of 1.98 falls within the critical value range of ±1.96 for a 95% confidence level, meaning we do not have enough evidence to reject the hypothesis that the sample percentage does not differ from the hypothesized value.

If We Are Testing a Hypothesis That a Sample Percentage