a-survey-records-the-time-in-minutes-past-700700-am-that-a-random-sample-of-3030

Question

A survey records the time, in minutes past $7 colon 00$ A.M., that a random sample of $30$ students wake up for an early class. The population standard deviation is known to be $25$ minutes. Calculate the point estimate of the population mean, $μ$ , and the margin of error for a $90 percent sign$ confidence interval.
$3 lines Line 1: 60 75 90 85 70 65 80 95 100 60 Line 2: 85 90 75 80 70 65 90 100 85 80 Line 3: 75 70 65 60 95 100 85 80 75 70$

$3 lines Line 1: 60 75 90 85 70 65 80 95 100 60 Line 2: 85 90 75 80 70 65 90 100 85 80 Line 3: 75 70 65 60 95 100 85 80 75 70$

Accepted Answer

$x ˉ almost equals 79.2 min$

$E almost equals 7.5 min$

Answer

$x ˉ almost equals 79.2 min$

$E almost equals 8.9 min$

Answer

$x ˉ almost equals 79.2 min$

$E almost equals 8.9 min$

Answer

$x ˉ almost equals 79.2 min$

$E almost equals 7.5 min$