Mathematics, 21.10.2020 17:01 nuhaminbruk
The Acme Battery Company has developed a new cell phone battery. On average, the battery lasts 60 minutes on a single charge. The standard deviation is 4 minutes. Suppose the manufacturing department runs a quality control test. They randomly select 7 batteries. The standard deviation of the selected batteries is 6 minutes. a. What would be the chi-square statistic represented by this test? b. What are the degrees of freedom for the chi-square statistic? c. Suppose they repeated the test with a new random sample of 7 batteries. What is the probability that the standard deviation in the new test would be greater than 6 minutes? (Use the applet)
Answers: 1
Mathematics, 21.06.2019 15:30
Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11
Answers: 3
Mathematics, 21.06.2019 16:00
Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. the heights of the girls in an advanced swimming course are 55, 60, 59, 52, 65, 66, 62, and 65 inches. match the measures of this data with their values.
Answers: 1
Mathematics, 21.06.2019 19:00
How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons
Answers: 1
Mathematics, 21.06.2019 20:10
21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)
Answers: 3
The Acme Battery Company has developed a new cell phone battery. On average, the battery lasts 60 mi...
Mathematics, 30.09.2019 10:10
Social Studies, 30.09.2019 10:10
Chemistry, 30.09.2019 10:10
Mathematics, 30.09.2019 10:10
History, 30.09.2019 10:10
Social Studies, 30.09.2019 10:10
Mathematics, 30.09.2019 10:10
History, 30.09.2019 10:10
Social Studies, 30.09.2019 10:10
Physics, 30.09.2019 10:10