A is one whose measurements are not more highly concentrated around one value than they are around any of the other values. Select one: O a. discrete variable O b. None of the given options is correct. O c. uniform random variable O d. random variable The confidence interval general format is_ Select one: O a. [Variance + (Critical Value ](Standard Error)] O b. [Point Estimate + (Critical Value )(Standard Error)] O c. [Point Estimate + (Critical Value )(Variance]] O d. [Point Estimate + (Sample Mean)(Standard Error)] The z distribution_ Select one: O a. has a mean of 0 and a standard deviation of 1 O b. has a mean of 0 and a standard deviation of 10 O c. contains 100% of all scores within -3 and +3 standard deviations O d. is positively skewed