# Just how slippery are banana peels on the floor? Slipperiness can be measured by the frictional coefficient.

## Question:

Just how slippery are banana peels on the floor? “Slipperiness” can be measured by the frictional coefficient. A small value for the coefficient indicates less friction (more slippery) than a larger value. Ice on steel has a frictional coefficient of about 0.02, whereas wood on concrete has a coefficient of 0.6. Below are 41 measurements of the frictional coefficients of banana skins on linoleum, with the slippery side down (Mabuchi et al. 2012).

n=41; ΣY=2.347; ΣY^{2}=0.148515

**a. **What is the mean frictional coefficient for banana skins on linoleum?

**b. **What is the 95% confidence interval for the mean banana peel frictional coefficient?

**c. **Based on this confidence interval, are banana peels less slippery than ice?

## Step by Step Answer:

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**ISBN:** 9781319226237

3rd Edition

**Authors:** Michael C. Whitlock, Dolph Schluter