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How many months must be sampled for analysis to be 99% confidence that the error in estimating the average monthly price of gasoline is at most $0.03. Assume the standard deviation is $ 0.05.
Sample of six car washes averaged $5.70 and had the sample standard deviation of $1.30. Suppose the normal population, use critical value method to test claim at a= 0.05.
Human populations can be modeled using an exponential growth function. Use the Library for research or other resources to find the following:
Ryan is planning to finance her college education by selling programs at the football games for her team. there is a fixed cost of $400 for printing these programs, and the variable cost is $3.
At a 5% level of significance, is there enough evidence from this survey to conclude that more than half of all adults would rather have $100 than a day off?
If code is 4 random letters, and letters can be utilized multiple times, how many different possible codes are there?
Which samples show unequal variances? Use α = .05 in all tests. Show the critical values and degrees of freedom clearly and illustrate the decision rule.
Determine the mode for this distribution. Describe why you can't calculate the mean number of times using data in the table.
Using the emperical rule solve the following problems for a distribution with a mean of 20 and a stardard diviation of 5. At least what percentage of the values will fall between 15 and 25.
Post-hoc fallacy is that condition where regression shows a high degree of correlation (R square is high), but there is no real cause-effect relationship between the independent and dependent variables.
Determine the best replacement policy over the next five years?
Provide a discussion that supports the assumption that the variance of savings increases with family income.
Determine whether the following equations have a solution or not? Apply the discriminant, are the solutions real, repeated real, or complex?
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