Mathematics, 05.05.2020 04:23 jessezarate7129
A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 39 households from the city, which gave the mean water usage to be 3410.30 gallons over a one-month period. Based on earlier data, the population standard deviation of the monthly residential water usage in this city is 387.90 gallons. Make a 95 % confidence interval for the average monthly residential water usage for all households in this city.
Answers: 3
Mathematics, 21.06.2019 13:30
The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).
Answers: 1
Mathematics, 21.06.2019 20:30
Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48
Answers: 1
Mathematics, 21.06.2019 21:30
Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?
Answers: 1
A city planner wants to estimate the average monthly residential water usage in the city. He selecte...
Spanish, 17.02.2021 23:00
History, 17.02.2021 23:00
Arts, 17.02.2021 23:00
Mathematics, 17.02.2021 23:00
Mathematics, 17.02.2021 23:00
Biology, 17.02.2021 23:00
Mathematics, 17.02.2021 23:00
Chemistry, 17.02.2021 23:00
Mathematics, 17.02.2021 23:00
History, 17.02.2021 23:00
English, 17.02.2021 23:00