Referring to Table 12-4, the critical value of the test statistic at 1% level of significance is 23.2093. 20.0902. 7.7794. 13.2767.

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Q: at a 0.10 significance level?

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A: here use basic of significance level and critical value

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.