The sample median is _______________ estimate for the mean of normal population.
An estimator Tn of θ is said to be more efficient than any other estimator T ⋅_(n) of θ if and only if
If X is a normal variate with mean 20 and variance 64, the probability that X lies between 12 and 32 is
If X is a normal variate representing the income in Rs. per day with mean=50 and S.D=10. If the number of workers in a factory is 1200, then the number of workers having income more than Rs. 62.00 =0.3849 where Z is a standard normal variate)
