Test the claim that the proportion of people who own cats is significantly different than 30% at the 0.05 significance level. The null and alternative hypothesis would be: The test is:   right-tailed left-tailed two-tailed Based on a sample of 600 people, 21% owned cats The test statistic is:  (to 2 decimals) The p-value is:  (to 2 decimals)

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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.