Mathematics, 13.08.2020 21:01, quay84
Emi computes the mean and variance for the population data set 87, 46, 90, 78, and 89. She finds the mean is 78. Her steps for finding the variance are shown below. sigma squared = StartFraction (87 minus 78) squared + (46 minus 78) squared + (90 minus 78) squared + (78 minus 78) squared + (89 minus 78) squared Over 5 EndFraction. = StartFraction 9 squared minus 32 squared + 12 squared + 0 squared + 11 squared Over 5 EndFraction. = StartFraction 81 minus 1,024 + 144 + 0 + 121 Over 5 EndFraction. = StartFraction negative 678 Over 5 EndFraction. = negative 135.6 What is the first error she made in computing the variance? Emi failed to find the difference of 89 - 78 correctly. Emi divided by N - 1 instead of N. Emi evaluated (46 - 78)2 as -(32)2. Emi forgot to take the square root of -135.6.
Answers: 1
Mathematics, 21.06.2019 22:30, ashleyrover11
(a. s."similarity in right triangles"solve for xa.) 10b.) 20c.) 14.5d.) [tex] 6\sqrt{3} [/tex]
Answers: 1
Mathematics, 22.06.2019 00:00, lilacastro
The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?
Answers: 1
Mathematics, 22.06.2019 03:00, meganldale15
An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).
Answers: 2
Emi computes the mean and variance for the population data set 87, 46, 90, 78, and 89. She finds the...
English, 14.06.2021 21:30
Mathematics, 14.06.2021 21:30
Physics, 14.06.2021 21:30
Mathematics, 14.06.2021 21:30
English, 14.06.2021 21:30
Computers and Technology, 14.06.2021 21:30
English, 14.06.2021 21:30
Spanish, 14.06.2021 21:30