Question: If the value of the sample standard deviation increases by a factor of 4 (i.e., becomes 4 times larger), while the sample size remains the




If the value of the sample standard deviation increases by a factor of 4 (i.e., becomes 4 times larger), while the sample size remains the same, how much does the confidence interval of the mean increase or decrease? a. The confidence interval will increase by a factor of 4 b. The confidence interval will increase by a factor of 2 (i.e., it will double) c. The confidence interval will decrease by a factor of 2 (i.e., it will be half the size) d. The confidence interval will decrease by a factor of 4 (i.e., it will be one quarter the size)If the sample size increases by a factor of 4, but the sample standard deviation stays the same, how much does the confidence interval of the mean increase or decrease? a. The confidence interval will increase by a factor of 4 b. The confidence interval will increase by a factor of 2 (i.e., it will double) c. The confidence interval will decrease by a factor of 2 (i.e., it will be half the size) d. The confidence interval will decrease by a factor of 4 (i.e., it will be one quarter the size)
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