Mathematics, 15.02.2021 20:00 jnthnsngh
Suppose an automotive repair company wants to determine the current percentage of customers who keep up with regular vehicle maintenance. How many customers should the company survey in order to be 90% confident that the estimated (sample) proportion is within 2 percentage points of the true population proportion of customers who keep up with regular vehicle maintenance?
Use the table of values below.
Z0.10 Z0.05 Z0.025 Z0.01 Z0.005
1.282 1.645 1.960 2.326 2.576
Answers: 3
Mathematics, 21.06.2019 18:50
The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9
Answers: 1
Mathematics, 22.06.2019 00:00
Which scenarios are most effectively explored by conducting an experiment? there is more than one correct answer. select all that apply. researchers want to study the effectiveness of a particular drug for treating migraines. they want to know which dosage of the drug yields the best results with the least side effects. to ensure fair results, the researchers want to ensure that participants and dosage administrators do not know which dosage participants receive. a teacher wants to plan a class fieldtrip and quickly determine where students prefer to go for the class fieldtrip. a car mechanic wants to know which of two engine brands makes better-performing engines. he wants to test the engines in identical situations and rate their performance in a way that can be fairly measured. a chemist studies the properties of a metal compound. she wants to know how the sample size of the metal affects its ability to conduct electricity. she wants to conduct the research in a controlled environment to minimize bias. a realty company wants to know the average income of its clients. the company wants to gather data income from current clients.
Answers: 2
Mathematics, 22.06.2019 01:30
In a sale there is 25% of all prices a chair costs Β£45 in sale how much was it before the sale
Answers: 1
Mathematics, 22.06.2019 06:30
Michele wanted to measure the height of her schoolβs flagpole. she placed a mirror on the ground 48 feet from a flagpole, then walked backwards until she was able to see the top of the pole in the mirror. her eyes were 5 feet above the ground and she was 12 feet from the mirror. using similar triangles, find the height of the flagpole to the nearest hundredth of a foot.
Answers: 1
Suppose an automotive repair company wants to determine the current percentage of customers who keep...
Mathematics, 19.09.2019 01:30
Mathematics, 19.09.2019 01:30
English, 19.09.2019 01:30
History, 19.09.2019 01:30
Business, 19.09.2019 01:30
Arts, 19.09.2019 01:30
History, 19.09.2019 01:30
Business, 19.09.2019 01:30
Health, 19.09.2019 01:30
Social Studies, 19.09.2019 01:30
Social Studies, 19.09.2019 01:30
English, 19.09.2019 01:30