Teaching MPPSC Assistant Professor Mock Test Series 2025 Communication Systems Probability and Random Variable Statistical Averages
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 to
1
z = 3.0
2
z = 3.6
3
z = 2.4
4
z = 3.2