Mathematics, 05.05.2020 11:48 Stuckonhomework
The population standard deviation for the lengths, in seconds, of the songs in an online database is 15 seconds. If we want to be 90% confident that the sample mean is within 4 seconds of the true population mean, what is the minimum sample size that should be taken?
Answers: 2
Mathematics, 21.06.2019 17:00
The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.
Answers: 1
Mathematics, 21.06.2019 18:00
Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}
Answers: 1
Mathematics, 22.06.2019 00:00
(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.
Answers: 1
The population standard deviation for the lengths, in seconds, of the songs in an online database is...
Mathematics, 23.02.2021 17:20
English, 23.02.2021 17:20
English, 23.02.2021 17:20
Social Studies, 23.02.2021 17:20
Social Studies, 23.02.2021 17:20
English, 23.02.2021 17:20
Mathematics, 23.02.2021 17:20
History, 23.02.2021 17:20
Physics, 23.02.2021 17:20
Health, 23.02.2021 17:20
Mathematics, 23.02.2021 17:20
Physics, 23.02.2021 17:20
Mathematics, 23.02.2021 17:20