Advertisements
Advertisements
प्रश्न
Define Normal distribution
Advertisements
उत्तर
A random variable X is said to follow a normal distribution with parameters mean µ and variance σ2, if its probability density function is given by
`"f"(x : mu, sigma) = 1/(sigmasqrt(2pi)) "exp"{-1/2 ((x - mu)/omega)^2} {:(-oo < x < oo","),(-oo < mu < oo","),(sigma > 0):}`
APPEARS IN
संबंधित प्रश्न
Write down the condition for which the binomial distribution can be used.
Define Poisson distribution
The mortality rate for a certain disease is 7 in 1000. What is the probability for just 2 deaths on account of this disease in a group of 400? [Given e–2.8 = 0.06]
If the heights of 500 students are normally distributed with mean 68.0 inches and standard deviation 3.0 inches, how many students have height less than or equal to 64 inches
Choose the correct alternative:
Forty percent of the passengers who fly on a certain route do not check in any luggage. The planes on this route seat 15 passengers. For a full flight, what is the mean of the number of passengers who do not check in any luggage?
Choose the correct alternative:
Which of the following statements is/are true regarding the normal distribution curve?
Choose the correct alternative:
If the area to the left of a value of z (z has a standard normal distribution) is 0.0793, what is the value of z?
Choose the correct alternative:
In a binomial distribution, the probability of success is twice as that of failure. Then out of 4 trials, the probability of no success is
X is a normally distributed variable with mean µ = 30 and standard deviation σ = 4. Find P(30 < X < 35)
People’s monthly electric bills in Chennai are normally distributed with a mean of ₹ 225 and a standard deviation of ₹ 55. Those people spend a lot of time online. In a group of 500 customers, how many would we expect to have a bill that is ₹ 100 or less?
