Mathematics, 16.12.2020 17:40, yonna74
Lifetimes of AAA batteries are approximately normally distributed. A manufacturer wants to estimate the standard deviation of the lifetimes of the AAA batteries it produces. A random sample of 23 batteries produced by the manufacturer lasted a mean of 10.3 hours with a standard deviation of 2.4 hours. Find a 95% confidence interval for the population standard deviation of the lifetimes of the batteries produced by the manufacturer.
Answers: 1
Mathematics, 21.06.2019 23:00, naomiedgrey
Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?
Answers: 1
Mathematics, 22.06.2019 00:00, hannahgracew12
Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.
Answers: 1
Mathematics, 22.06.2019 08:00, ravenalionna115
It is given that cs is the perpendicular bisector of segment ab. by the definition of perpendicular we can conclude that angles csa and csb are right angles. which answer choice justifies the fact that ? csb ? ? csa?
Answers: 2
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