Mathematics, 05.05.2020 19:26 cchave9563
An educational technology company advertises English language fluency after one year of using their online language courses. Researchers test their curriculum by randomly selecting 100 new students and following their project after one year of using the curriculum. They test the students using Cambridge English Test and assign each student a score between 1 to 25. They consider scores below 15 to indicate a lack of fluency: H0:μ=15 HA:μ≥15 Based on the data they conclude that the evidence is not strong enough to conclude that the students are fluent in English. What type of error is possible in this situation? Type I Type II
Answers: 2
Mathematics, 21.06.2019 21:00
An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.
Answers: 1
Mathematics, 21.06.2019 23:00
Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?
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Mathematics, 22.06.2019 03:00
Let us imagine that the number of automobile accidents in a certain region are related to the regional number of registered automobiles in tens of thousands (b1), alcoholic beverage sales in $10,000 (b2), and decrease in the price of gasoline in cents (b3). furthermore, imagine that the regression formula has been calculated as: y = a + b1x1 + b2x2 + b3x3 where y = the number of automobile accidents, a = 7.5, b1 = 3.5, b2 = 4.5, and b3 = 2.5 calculate the expected number of automobile accidents for a football weekend if the region has 25,000 registered vehicles, $75,000 worth of beer is sold, and a gas war causes a 10 cent drop in a gallon of gas.
Answers: 3
An educational technology company advertises English language fluency after one year of using their...
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