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According to a survey of American households, if annual household income is over $50,000, the probability that?the residents own 2 cars is 80%. If annual household income is $50,000 or less, the probability that the residents?own 2 cars is 55%. Of the households surveyed, 60% had incomes over $50,000. The probability that the?residents of a household own 2 cars is?
The time spent by a factory worker A packing a box is a random variable with mean 3.5 minutes and standard deviation 1 minute. The times spent packing any two boxes are independent.
Could you please show me how you computed the two critical values to (2.18, 17.83) ? Which formula you used ?
According to the 1996 Statistical Abstract of the United States, 7.6% of the scores on the verbal portion of the Scholastic Aptitude Test (SAT) exceeded 600.
Is there sufficient evidence to indicate that the mean annual percentage turnover for U.S. plants exceeds the corresponding mean percentage for Japanese plants?
Which of the following is the correct set of probabilities for X and if a student is selected at random, the probability he or she is either a Junior or a Senior
Utilizing form of Regression method which would give you highest performing model to forecast Sales. Utilizing your model forecast the sales
In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be:
Finds the average life time for this sample is 970 hour and the standard deviation is 80 hours. Can the firm claim that the average life time is 1000 hours at the 5% level of significance?
A human resources director, on learning about the regression effect, decides to hire people who have been fired by their previous employer for poor performance.
Question: If the regression line is drawn as Y = C + 1075x, when X was 2 and y was 239, given that the intercept was 11. Calculate the residual
What is the difference in appearance between a t-distribution and a z-distribution? Why do they have slightly different appearances?
The mean daily amount of her tips was $84.85. At the .01 significance level, can Ms. Brigden conclude that she is earning an average of more than $80 in tips?
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