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A set of 10 data values has a mean and median of $1,425 and ranges from a minimum value of $987 to a maximum value of $1,945. Later, we discover that the $1,945 value was mis-recorded and should have been $2,945. Find the corrected values for the mean and median.
Find out the slope, b, and the intercept, a, for the least-squares line. Write the equation of the least squares line.
Find out the forecast value utilizing three month moving average method, weighted moving average method, exponential smoothing and regression methods.
What is the best predicted IQ of the wife, given that the husband has an IQ of 105 ? Use a significance level of 0.05.
Suppose that 1% of all the students seeking treatment at the school infirmary have mono. Of the students who do have mono, 90% complain of a sore throat. Of the students who do not have mono, 30% also have sore throats.
The structure of a two factor study can be presented as a matrix with levels of one factor determining the rows and the levels of the second factor determining the columns. With this structure in mind, describe the mean differences that are evalua..
How to calculate the trimmed mean for each sample by deleting the smallest and largest observation and then corresponding trimming percent ages.
This is a test regarding two dependent samples. There is sufficient evidence to conclude that the mean price of textbooks is lower at seller A.
The amount of corn chips dispensed into a 10 ounce bag by the dispensing machine has been identified at possessing a normal distribution with a mean of 10.5 ounces and a standard deviation of .2 ounces.
In the Florida lottery, six numbers from 1 to 53 must be selected. to win the jackpot, the six numbers must match the draw numbers.
The calculated chi-square test statistic and the table value for a 0.05 significance level are:
Determine the probability that a randomly selected exam will have a score of at least 71? What percentage of exams will have scores between 89 and 92?
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
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