Select True or False from each pull-down menu, depending on whether the corresponding statement is true or false.

? True False  1. If a sample of size 30 is selected, the value $A$ for the probability $P(-A \leq t \leq A)=0.95$ is 2.045.

? True False  2. If a sample of size 250 is selected, the value of $A$ for the probability $P(-A \leq t \leq A)=0.90$ is 1.651.

? True False  3. If a sample has 15 observations and a 90% confidence estimate for $\mu$ is needed, the appropriate t-score is 1.341.

? True False  4. If a sample has 18 observations and a 90% confidence estimate for $\mu$ is needed, the appropriate t-score is 1.740.