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In a random sample of 80 students (18-24 years of age), the average number of texts handled in a day is 125 (this is true) with a standard deviation of 27 texts (may or may not be true). With 90% confidence, what is the range of texts (to nearest integer) we expect in the entire population of all students? 120 - 130 121 - 129 115 - 135 100 - 150 D Question 4 10 pts If the number of samples in the previous problem were doubled, by what factor (new value/old value) would the confidence interval change (keeping the same confidence level?) New interval would be ~1.4 times previous interval "width." New interval would be about twice the previous interval "width." New interval would be ~0.7 times previous interval "width." New interval would be about half the previous interval "width."