subject
Mathematics, 30.06.2019 02:50 rscott400

An article in the november 1983 consumer reports compared various types of batteries. the average lifetimes of duracell alkaline aa batteries and eveready energizer alkaline aa batteries were given as 4.1 hours and 4.5 hours, respectively. suppose these are the population average lifetimes. (a) let x be the sample average lifetime of 64 duracell and y be the sample average lifetime of 64 eveready energizer batteries. what is the mean value of x − y (i. e., where is the distribution of x − y centered)?

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 21:30
If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.
Answers: 1
question
Mathematics, 21.06.2019 21:50
Question 14 (1 point) larry deposits $15 a week into a savings account. his balance in his savings account grows by a constant percent rate.
Answers: 3
question
Mathematics, 21.06.2019 22:30
Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.
Answers: 1
question
Mathematics, 22.06.2019 00:00
Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment
Answers: 1
You know the right answer?
An article in the november 1983 consumer reports compared various types of batteries. the average li...
Questions
question
Chemistry, 25.05.2021 08:10
question
Mathematics, 25.05.2021 08:10
question
Mathematics, 25.05.2021 08:10
question
Social Studies, 25.05.2021 08:10
question
History, 25.05.2021 08:10
question
Mathematics, 25.05.2021 08:10
question
History, 25.05.2021 08:10