## Elementary Statistics (12th Edition)

a. 233.4 sec < $\mu$ < 256.65 sec b. Best point estimate of m is 245.025 sec. The margin of error is E = 11.625 sec.
a. 233.4 sec < $\mu$ < 256.65 sec b. Best point estimate of m is 245.025 sec. The margin of error is E = 11.625 sec.