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Data on lions’ stalks of wildebeests and zebras from a simple random sample of 159 kills appear in the table below.
Characteristic |
Numeric value |
Mean stalking time |
31.6 min |
Standard deviation of stalk time |
16.4 min |
Proportion of stalks of the crouching type |
0.92 |
The same monitoring of radio-collared lions over the years suggests that the overall proportion of stalks that are the crouching type is about 0.87. Do the data above provide evidence that for this population of lions the proportion of crouching stalks of wildebeests and zebras is greater than what was originally thought? Use alpha=0.05
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