Question: A study was carried out on the perceptions of problems arising in relationships between advertising agencies and their clients. Agencies were asked the extent to

A study was carried out on the perceptions of problems arising in relationships between advertising agencies and their clients." Agencies were asked the extent to which various agency characteristics caused problems. The table given here shows average responses on a scale from I (seldom a problem) to 4 for agency-client relationships lasting less than and more than 10 years.

(a) Calculate Spearman's rank correlation coefficient.

(b) Carry out against a two-sided alternative a nonparametric test of the null hypothesis of no association.

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