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What is the formula used to get percentile from z-score? I have z-scores but am using excel and want to be able to type in a formula to figure percent instead of coming here and continuing to figure it out.
Which of the following is true about the expected value of perfect information. It is the amount you would pay for any sample study.
The director of Heating and Oil at Superior Oil Company is concerned about the high cost of home heating oil being offered to their customers for the upcoming Fall season in Philadelphia, PA.
What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained?
The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with a mean of 3.2 pounds and a standard deviaition of 0.8 pound.
Let X denote number of students which were on bus carrying this arbitarily selected student. One of the 4 bus drivers is also arbitarily selected. Calculate expectations and variances of X.
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
A thorough examination reveals there is nothing wrong with the filling machine. From a statistical standpoint, was there a "type" error made? If yes, which type? Explain.
Please address the following question by answering the following: Suppose that G is a finite group of even order 2n.
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
The average score, in the sample, was 84 with a sample standard deviation of 3.5. The 95% confidence interval for the average examination score of the population of the examinations is?
At α = .05, is there a difference in variances? Illustrate all steps clearly, including illustration of the decision rule.
The four characters required for the passcode, the first must be a number,the 2nd and 3rd must be a number. how many different passcodes can you form?
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