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The display shows the heights of some of the singers in a chorus, collected so that the singers could be positioned on stage with shorter ones in front and taller ones in back.
a) Describe the distribution.
b) Can you account for the features you see here?
specimens of blood from 10 different animals were analyzed for blood count say y in units of 100 and packed cell volume
Test-retest reliability coefficients (Pearson Product-Moment Correlations) were calculated based on sample retesting of 50-75 students in Grades K, 1, 3, 5, 8, and 12. The resultant reliability coefficients ranged from (.42) in kindergarten for Sp..
Find the 1σ and 2σ control limits. For the 1σ limits, what is the probability of concluding that the process is out of control when it is really in control?
assume the distribution of heights among all 15 year old boys is normally distributed with mean 67 and standard
The mean sales during the winter months was $995 with a standard deviation of $100. At 0.02 significance level can we conclude there is a difference in sales between the two seasons? Find the p value
the mean and max 90th percentile elasped time to repair an item is 2.3 hours and 5.4 hour respectively.the time to
Calculate the mean, median, mode, variance, and standard deviation for the numeric data and construct a histogram, pie, or Stem-Leaf Display chart encompassing the mean leadership scores for both male and female managers.
Programmers have monthly incomes of less than $2,834, what is the value of the standard deviation of the monthly earnings of the computer programmers?
Determine standard deviation be if sample contained 100 students rather than 50? How large the sample is required to decrease standard deviation of percentage who say "Yes" from 7% to 3.5%?
The manager of a car wash receives pricing schedule (shown below) from the vendor who supplies soap- and a promise of a 25% shorter lead time for deliveries.
Evaluate probability values using normal distribution and How many students earned more than $36,000? _______
What is the forecast for year 13 based on the 5-year moving average? What is the forecast for year 13 based on the 5-year weighted moving average? What is the MAD for the moving average forecast
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