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
Another question on Mathematics
Mathematics, 21.06.2019 12:50
What constants do you need to add to each of the following quadratic equations to complete the square? 2x2 - 3x = 0 x2 - 8x = 0 2x2 - 11x = 18
Answers: 1
Mathematics, 21.06.2019 19:00
In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.
Answers: 3
Mathematics, 21.06.2019 20:30
Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4
Answers: 1
Mathematics, 21.06.2019 22:00
Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120
Answers: 3
You know the right answer?
According to an IRS study, it takes a mean of 330 minutes for taxpayers to prepare, copy, and electr...
Questions
Computers and Technology, 29.06.2019 18:30
History, 29.06.2019 18:30
Mathematics, 29.06.2019 18:30
English, 29.06.2019 18:30
Biology, 29.06.2019 18:30
English, 29.06.2019 18:30
