Mathematics, 21.03.2020 10:31 sofielofi

A real estate company is interested in testing whether the mean time that families in Gotham have been living in their current homes is less than families in Metropolis. Assume that the two population variances are equal. A random sample of 100 families from Gotham and a random sample of 150 families in Metropolis yield the accompanying data on length of residence in current homes.
What is the estimated standard error of the difference between the 2 sample means? Round to the nearest hundredth.
Gotham: XG = 35 months, SG2 = 900
Metropolis: XM = 50 months, SM2 = 1050

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 23:00, firefightergros7271

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events

Answers: 2

continue

Mathematics, 22.06.2019 00:00, Queenashley3232

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

continue

Mathematics, 22.06.2019 01:10, charlzperru8234

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?

Answers: 2

continue

Mathematics, 22.06.2019 01:30, lillianmitchell580

Write 37/22 as a decimal rounded to the nearest hundredth.

Answers: 2

continue

You know the right answer?

A real estate company is interested in testing whether the mean time that families in Gotham have be...