Mathematics, 06.03.2020 23:48 NewKidnewlessons
According to an IRS study, it takes a mean of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. This distribution of times follows the normal distribution and the standard deviation is 80 minutes. A consumer watchdog agency selects a random sample of 40 taxpayers.
1. What is the standard error of the mean in this example?2. What is the likelihood the sample mean is greater than 320 minutes?3. What is the likelihood the sample mean is between 320 and 350 minutes?4. What is the likelihood the sample mean is greater than 350 minutes?
Answers: 2
Mathematics, 21.06.2019 19:00, ivethzurita0425
{0,1,2,3,4,5,6,20,21,22,23,24,25} the distribution is considered to be: skewed the right, skewed the left, not skewed?
Answers: 1
Mathematics, 21.06.2019 19:30, emopandabogard8712
Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.
Answers: 1
Mathematics, 21.06.2019 22:30, madisonsan9020
Fast! find the length of cu. the triangles are similar. show your work.
Answers: 2
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