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The heights of dogs, in inches, in a city have an unknown distribution with mean 22 and standard deviation 3 inches. A sample, with size
The heights of dogs, in inches, in a city have an unknown distribution with mean 22 and standard deviation 3 inches. A sample, with size n = 39, is randomly drawn from the population and the mean is taken. What is the probability that the mean is less than 21.7 inches? z 0.7 0.6 0.5 0.4 0.00 0.2420 0.2743 0.3085 0.3446 0.01 0.2389 0.2709 0.3050 0.3409 0.02 0.2358 0.2676 0.3015 0.3372 0.03 0.2327 0.2643 0.2981 0.3336 0.04 0.2296 0.2611 0.2946 0.3300 You may use a calculator or the portion ofthe z-table given above, 0 Round the final answer to four decimal places. 0.05 0.2266 0.2578 0.2912 0.3264 0.06 0.2236 0.2546 0.2877 0.3228 0.07 0.2206 0.2514 0.2843 0.3192 0.08 0.2177 0.2483 0.2810 0.3156 0.09 0.2148 0.2451 0.2776 0.3121
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