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A loan officer compares the interest rates for 48-month fixed-rate auto loans and 48-month variable-rate auto loans. Two independent, random samples of auto loan rates

A loan officer compares the interest rates for 48-month fixed-rate auto loans and 48-month variable-rate auto loans. Two independent, random samples of auto loan rates are selected. Use the excel file on moodle. Assume unequal population variances.

Set up the null and alternative hypotheses needed to determine whether the mean rates for 48-month variable-rate and fixed-rate auto loans differ.

what's the test statistic?

2 decimal places is fine.

student submitted image, transcription available below 

Comparison between the interest rates of 48-month fixed-rate auto loans and 48-month variable-rate auto loans Fixed-Rate (%) Variable-Rate (%) 4.29 3.59 3.75 2.75 3.50 2.99 3.99 2.50 3.75 3.00 3.99 5.40 4.00

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