Mathematics, 12.08.2020 07:01 bfer11
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 35.0 hours and a standard deviation of 5.5 hours. As a part of its quality assurance program, Power +, Inc. tests samples of 25 batteries.
A) What can you say about the shape of the distribution of the sample mean?
B) What is the standard error of the distribution of the sample mean?
C) What proportion of the samples will have a mean useful life of more than 36 hours?
D) What proportion of the sample will have a mean useful life greater than 34.5 hours?
E) What proportion of the sample will have a mean useful life between 34.5 and 36.0 hours?
Answers: 2
Mathematics, 21.06.2019 14:00
Which multiplicative property is being illustrated below? (type commutative, associative, or identity) 5 × 2 × 4 = 2 × 5 × 4
Answers: 1
Mathematics, 21.06.2019 21:00
Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2
Answers: 2
Mathematics, 21.06.2019 21:20
If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°
Answers: 2
Mathematics, 21.06.2019 22:30
The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction
Answers: 2
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batte...
Chemistry, 18.02.2021 21:50
History, 18.02.2021 21:50
English, 18.02.2021 21:50
English, 18.02.2021 21:50
Social Studies, 18.02.2021 21:50
Mathematics, 18.02.2021 21:50
Geography, 18.02.2021 21:50
Geography, 18.02.2021 21:50
Biology, 18.02.2021 21:50