Welcome to Statistics and Probability.
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The mean systolic blood pressure of 5 young individuals is 115 mmHg with a standard deviation of 11.2 mmHg. Calculate 95 percent confidence interval.
The probability of an event cannot be:
A box contains 2 red, 3 black and 4 blue balls.3 balls are randomly drawn from the box.What is the probability that the balls are of different colors?
Which of the following is a measure of Spread?
Two books are to be selected at random without replacement out of four books. Then number of possible selections are:
A fair die is rolled. Probability of getting even face given that face is less than 5 is given by:
Two dice are rolled. Probability of getting a total of 4 given that both-faces are similar is:
A die and a coin are tossed together. Probability of getting head on the coin is:
A fair coin is tossed 100 times, the expected number of heads is:
To label a statistical test definitely significant, the p-value should be
A measure of the chance that an uncertain event will occur:
A number between 0 and 1 that is use to measure uncertainty is called:
When one card is selected at random from a pack of 52 playing cards, the number of possible selections is
Urinary concentration of lead in 15 rural children ( milimole per litre per 24 hour) is .2, 2.6, .1, 1.1, .4, 2. , .8, 1.3, 1.2, 1.5, 3.2, 1.7, 1.9, 1.9, 2.2 Calculate median for the above data.
A fair die is rolled. Probability of getting more than4 or less than 3 is given by:
For a normal distribution the total area under the curve is
A balance die is rolled, the probability of getting an odd number is:
Six digits are selected at random again and again from a random number table and the even digits are counted each time. In most of the cases, the number of even digits will be
Two dice are rolled. Probability of getting total less than 4 or total more than 10 is given by:
Probability lies between:
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