Advertisements
Advertisements
प्रश्न
Define Standard normal variate
Advertisements
उत्तर
A random variable Z = `("X" – mu)/sigma` follows the standard normal distribution.
Z is called the standard normal variate with mean 0 and standard deviation 1 i.e Z – N (0, 1).
Its Probability density function is given by:
φ(z) = `1/sqrt(2pi) "e"^((-x^2)/2) -oo < "z" < oo`
APPEARS IN
संबंधित प्रश्न
In a particular university 40% of the students are having newspaper reading habit. Nine university students are selected to find their views on reading habit. Find the probability that all those selected have newspaper reading habit
If 18% of the bolts produced by a machine are defective, determine the probability that out of the 4 bolts chosen at random atmost 2 will be defective
A pair of dice is thrown 4 times. If getting a doublet is considered a success, find the probability of 2 successes
The mean of a binomial distribution is 5 and standard deviation is 2. Determine the distribution
Derive the mean and variance of poisson distribution
Mention the properties of poisson distribution
It is given that 5% of the electric bulbs manufactured by a company are defective. Using poisson distribution find the probability that a sample of 120 bulbs will contain no defective bulb
The average number of phone calls per minute into the switchboard of a company between 10.00 am and 2.30 pm is 2.5. Find the probability that during one particular minute there will be atleast 5 calls
Write down any five chief characteristics of Normal probability curve
In a test on 2,000 electric bulbs, it was found that bulbs of a particular make, was normally distributed with an average life of 2,040 hours and standard deviation of 60 hours. Estimate the number of bulbs likely to burn for more than 2,150 hours
