In a test of hypothesis, the null hypothesis is that the population variance is equal to 4.7 and the alternative hypothesis is that the population variance is less than 4.7. A sample of size 18 selected from the normal population produced a standard deviation of 3.11. What is the approximate p-value for this test? d. 0.8433 a. 0.3312 c. 0.0783 e. 0.1567 b. 0.9937

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