Course Code
dam363


Question
In test of hypothesis, Type I error refers to ____________

Answer
The possibility of deciding in favour of H1 when in fact Ho is true



Question
A coin is tossed twice, What is the probability of obtaining atleast a head

Answer
0.75



Question
A company manager observes a standard deviation of N700 on a mean daily fine of N2800 for drivers who exceed speed limits. Find the Coefficient of variation

Answer
0.25



Question
The number of defective products from a factory for 5 days is given as 7, 18, 5, 2, 9. Estimate the 25th percentile

Answer
3.5



Question
The standard deviation of the height of four pupils 10, 7, 6, 5 in a class is ______

Answer
1.87



Question
A sequence of 10 bits is randomly generated. What is the probability that at least one of these bits is 0.

Answer
1023/1024



Question
An urn contains 4 blue balls and 5 red balls. Using replacement policy, find the probability of picking two balls of the same colour in succession

Answer
41/81



Question
What is the probability that when two dice are rolled, the sum of the numbers on the two dice is 7

Answer
0.16666666666667



Question
A fair die is rolled 7 times. What is the probability that the rolled die will not show an even number

Answer
(1/2)7



Question
One of these is not a measure of statistical error

Answer
Probability



Question
In test of hypothesis, Type I error refers to ____________

Answer
The possibility of deciding in favour of H1 when in fact Ho is true



Question
A coin is tossed twice, What is the probability of obtaining atleast a head

Answer
0.75



Question
A company manager observes a standard deviation of N700 on a mean daily fine of N2800 for drivers who exceed speed limits. Find the Coefficient of variation

Answer
0.25



Question
The number of defective products from a factory for 5 days is given as 7, 18, 5, 2, 9. Estimate the 25th percentile

Answer
3.5



Question
The standard deviation of the height of four pupils 10, 7, 6, 5 in a class is ______

Answer
1.87



Question
A sequence of 10 bits is randomly generated. What is the probability that at least one of these bits is 0.

Answer
1023/1024



Question
An urn contains 4 blue balls and 5 red balls. Using replacement policy, find the probability of picking two balls of the same colour in succession

Answer
41/81



Question
What is the probability that when two dice are rolled, the sum of the numbers on the two dice is 7

Answer
0.16666666666667



Question
A fair die is rolled 7 times. What is the probability that the rolled die will not show an even number

Answer
(1/2)7



Question
One of these is not a measure of statistical error

Answer
Probability


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