[1] Length-to-width ratios
 [1] 10.73  8.48  8.52  8.91  8.93  9.38  8.89  8.71  8.87 11.77  8.80  9.07
[13]  9.57  6.23 10.48 10.02  9.20  9.29  9.41 10.39  8.38 10.33  9.94  6.66
[25]  9.39 11.67  9.98  8.07  9.35  9.17  8.30  9.84  8.37  8.86  9.89  9.17
[37]  9.59  6.85  9.93  8.17 12.00

        One Sample t-test

data:  ratio 
t = 4.0303, df = 40, p-value = 0.0002427
alternative hypothesis: true mean is not equal to 8.5 
95 percent confidence interval:
 8.877669 9.637453 
sample estimates:
mean of x 
 9.257561