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Question: A local gasoline dealership in a small town wants to estimate the average amount of gasoline that people in that town use in a 1-week period. The dealer asked 44 randomly selected customers to keep a diary of their gasoline usage, and this information produced the following data on gas used (in gallons) by these people during a 1-week period.
Construct a 95% confidence interval for the average weekly gas usage by people in this town. Use the t distribution.
A random sample of 550 automobiles on the road shows that 219 of them have Goodyear tires. Conduct the test at α = 0.01.
you plan to conduct a survey to find what proportion of the workforce has two or more jobs. you decide on the 99
Determine the values of r for which det(A-rI) = 0 Verify that X(t) is a fundamental matrix for the given system and compute X-1(t). Use the result, x' = Ax, x(t0) = x0 to find the solution to the given initial value problem.
At the 0.10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
set 1 48.2 58.3 62.1 53.8 72.4 56.8 54.1 66.4set 2 44.5 52.1 54.2 46.4 52.7 74.2 51.3 52.4a. with 90
a state makes licenses plates with four letters followed by four digits how many licences plates can you have with no
The file P03.xlsx lists monthly data since 1950 on the well-known Dow Jones Industrial Average (DJIA), as well as the less well-known Dow Jones Transportation Average (DJTA) and Dow Jones Utilities Average (DJUA). Each of these is an index based o..
Criticize the following definitions in light of the eight rules for lexical definitions:- "Semantics" is when somebody studies words.
in a group of 200 students. 95 passed probability 85 passed geography and 30 passed neither. what is the probability
before 1918 approximately 60 of the wolves in the new mexico and arizona region were male and 40 were female. however
the main reason women seek medical attention for menopausal symptoms is hot flashes. dietary supplements containing
If a random sample of 40 customers is taken, what is the probability that the sample average expenditure per customer for this sample will be 87.00 or more?
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