When New Balance Hubway discusses managing how many bikes are in various stations, it is focusing on which aspect of service distribution?

Which statement is correct concerning the decomposition of the total variation?

A) Because it is not known that all the groups have the same mean, we cannot calculate the variance of all the observations together. B) If the population mean is the same in all the groups, then the variation in the sample means and the sizes of the sample groups can be used to estimate the variance of Y. C) By comparing the Y variance estimates based on between-group and within group variation, we can test the null hypothesis. D) All statements are correct.

One inland marine coverage form is the accounts receivable coverage form. In which of the following cases would the purchaser of this form (the insured) be indemnified through the coverage?

A) if the insured cannot pay amounts owed because the purchaser has become insolvent B) if the insured cannot pay amounts owed because the purchaser has incurred an insured physical damage loss C) if the insured cannot collect accounts receivable because of the destruction of records D) if the insured cannot collect accounts receivable because the purchaser extended credit to poor credit risks