Mathematics, 18.10.2019 17:30 karebareyo
An electrical engineer wishes to compare the mean lifetimes of two types of transistors in an application involving high-temperature performance. a sample of 60 transistors of type a were tested and were found to have a mean lifetime of 1827 hours and a standard deviation of 164 hours. a sample of 180 transistors of type b were tested and were found to have a mean lifetime of 1658 hours and a standard deviation of 219 hours. let μx represent the population mean for transistors of type a and μy represent the population mean for transistors of type b. find a 95% confidence interval for the difference μx−μy . round the answers to three decimal places.
Answers: 3
Mathematics, 21.06.2019 23:30, pinkygirlp1662
The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7
Answers: 2
Mathematics, 22.06.2019 00:20, hazeleyes8908
Find the power set of each of these sets, where a and b are distinct elements. a) {a} b) {a, b} c) {1, 2, 3, 4} show steps
Answers: 1
Mathematics, 22.06.2019 02:00, Mitchmorgan3816
Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year? show your work and explain your reasoning in the space provided below.
Answers: 2
Mathematics, 22.06.2019 04:00, ZayBoogie4771
Which expression is equivalent to 5a/4 - b/8 ?
Answers: 1
An electrical engineer wishes to compare the mean lifetimes of two types of transistors in an applic...
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