Use the Spearman rank correlation test to investigate the relationship between market rates of return, in terms of the S&P 500, and the annual rate of return on 3-month Treasury bills during 1970–1990, which are indicated in the following table.

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Year 1970 1971 1972 1973 1974 Rate of return 3-month T-bill 6.46 4.35 4.07 7.04 7.89 S&P 500 .0010 .1080 .1557 -.1737 -.2964