Mathematics, 16.05.2021 01:00 azaz1819
A student researcher compares the ages of cars owned by students and cars owned by faculty at a local state college. A sample of 79 cars owned by students had an average age of 5.15 years. A sample of 118 cars owned by faculty had an average age of 7.69 years. Assume that the population standard deviation for cars owned by students is 3.54 years, while the population standard deviation for cars owned by faculty is 3.82 years. Determine the 99% confidence interval for the difference between the true mean ages for cars owned by students and faculty. Step 1 of 3 : Find the point estimate for the true difference between the population means.
Answers: 1
Mathematics, 21.06.2019 12:30, masad
Acamper leaves camp on a kayak and travels 50 miles east on a river, then he ties his kayak to the bank and travels 20 miles north on a bicycle. this trip can be plotted on the coordinate plane, where the camp is the point (0, 0). the distant of the camper to the camp can be found using the distance formula. which other formula can he use? a) 502 - 202 b) 502 + 202 c) 502 - 202 d) 502 + 202
Answers: 1
Mathematics, 21.06.2019 20:40, mimithurmond03
In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.
Answers: 3
A student researcher compares the ages of cars owned by students and cars owned by faculty at a loca...
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