Home > PYQ > NIC STA 2023 - Shift 1
41. In the following question, there are four groups of letters. One of the groups does not
belong to the same category as others. find the odd one out.
No explanation ¯\_(ツ)_/¯
42. A and B are independent events of a random experiment such that /'(/t n 3) = 7 and
=;� then P{A)�?
No explanation ¯\_(ツ)_/¯
43. Three boys and three girls sit in a row. The probability that exactly two of the girls are
sitting next to EACH other (The remaining girts separated from them by at least one boy),
rs:
No explanation ¯\_(ツ)_/¯
44. A die is thrown 100 times. If getting an even number is considered a success, the
variance of the number of successes is_
No explanation ¯\_(ツ)_/¯
45. Suppose (he number of babies born each hour at a hospital follows a Poisson
distribution with a mean of 2 The probability that exactly five babies will be bom during a
particular 1 hour period at the hospital, is_:
No explanation ¯\_(ツ)_/¯
46. Regression modeling is a statistical framework for developing a mathematical equation
that describes, how?
No explanation ¯\_(ツ)_/¯
47. If the coefficient of determination is 0 81, the correlation coefficient_
No explanation ¯\_(ツ)_/¯
48. Suppose the correlation coefficient between height {as measured in feet) versus weight
(as measured in pounds) is 0 40. Now, suppose that the units of both variables are
converted to metric (meters and kilograms) The impact on the slope is_
No explanation ¯\_(ツ)_/¯
49. The weighted mean of the first f? natural numbers, the weights being the corresponding
numbers, is:
No explanation ¯\_(ツ)_/¯
50. A contentious random variable X" has the probability density function
if U.v<3
[0, otherwise
The value of k is:
No explanation ¯\_(ツ)_/¯