Question
A physical instructor claims that the mean weight of
students in school is greater than 82 kg with standard deviation 20. If a sample of size 81 students is selected with mean weight of 90. The test statistic equals toSolution
The correct answer is B
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The ratio of A's and B's salary is 6 : 7. If B's salary is increased by 5(1/2)%, then his total salary becomes Rs 1,26,600. The salary (in Rs) of A is:
