Advertisements
Advertisements
प्रश्न
Choose the correct alternative:
If X ~ N(9, 81) the standard normal variate Z will be
पर्याय
Z = `("X" - 81)/9`
Z = `("X" - 9)/81`
Z = `("X" - 9)/9`
Z = `(9 - "X")/9`
Advertisements
उत्तर
Z = `("X" - 9)/81`
APPEARS IN
संबंधित प्रश्न
If 5% of the items produced turn out to be defective, then find out the probability that out of 20 items selected at random there are exactly 4 defectives
Out of 750 families with 4 children each, how many families would be expected to have atleast one boy
A pair of dice is thrown 4 times. If getting a doublet is considered a success, find the probability of 2 successes
Assume that a drug causes a serious side effect at a rate of three patients per one hundred. What is the probability that atleast one person will have side effects in a random sample of ten patients taking the drug?
A car hiring firm has two cars. The demand for cars on each day is distributed as a Posison variate, with mean 1.5. Calculate the proportion of days on which some demand is refused
Choose the correct alternative:
Normal distribution was invented by
Choose the correct alternative:
Which of the following statements is/are true regarding the normal distribution curve?
Hospital records show that of patients suffering from a certain disease 75% die of it. What is the probability that of 6 randomly selected patients, 4 will recover?
The time taken to assemble a car in a certain plant is a random variable having a normal distribution of 20 hours and a standard deviation of 2 hours. What is the probability that a car can be assembled at this plant in a period of time. Between 20 and 22 hours?
X is a normally distributed variable with mean µ = 30 and standard deviation σ = 4. Find P(X > 21)
