pt] Between the 95% and 90% intervals, which one is wider and why? (a) The 90% interval because it is a less accurate interval. (b) The 95% interval because it is a more useful interval. (c) The 90% interval since, in order to decrease the confidence from the 95% to 90%, the margin of error should increase so that the intervals constructed using sampling will capture the true mean more often. (d) The 95% interval since, in order to increase the confidence from the 90% to 95%, the margin of error should increase so that the intervals constructed using sampling will capture the true mean more often