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Question: Odometers measure automobile mileage. How close to the truth is the number that is registered? Suppose 12 cars traveled exactly 10 miles (measured by surveying) and the following mileage figures were recorded by the odometers. State the null hypothesis, choose an alternative hypothesis, perform a t test, and write a conclusion.
9.8 10.1 10.3 10.2 9.9 10.4 9.9 10.3 10.0 10.1 10.2
Before 1918, in a random sample of 11 wolves spotted in the region, what is the probability that 8 or more were male?
A statistical study reported that a drug was effective with a p-value of .042. (a) Is this true? An effective sample may be found about 42 times in 1000 samples.
a. If the Ulleval University Hospital in Oslo requires special treatment for newborn babies weighing less than 2700 g, what is the percentage of newborn babies requiring special treatment?
An electronic device is made up of two components A and B such that the device would work satisfactorily as long as at least one of the components works.
Suppose n people, n = 3, play "odd person out" to decide who will buy the next round of refreshments. The n people each flip a fair coin simultaneously.
Calculate the coefficient of correlation between y and x1. Is there evidence of a linear relationship between sale price and appraised land value?
How much time and energy do you invest in making sure you aren't guilty of the fundamental attribution error or the self-serving bias?
Choose one of the following quantitative variables from the data set: Age, Weight, Cell Phone, Study, TV, Sleep, Pets, or Work. Find a 95% confidence interval for the population mean [variable] of all ABC students
If you were to perform a similar study in the geographic area where you live, define a population, frame, and sampling method you could use.
Explain any type of government you know in the world history today as long as government types are concerned.
If in fact the true mean score of all students taking the preparatory course is 522, which of the following statements is true about our hypothesis test?
we have a bin with 9 blue marbles and 4 gold marbles. we draw 3 marbles from the bin without replacement. then we put
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