Number of girls = 20
Now, 40% of boys = 10
\(\rightarrow 100\% = 100\times\frac{100}{4}=25\)
Therefore, Total students =\(20 +25 =45\)
The correct answer is (B) : 45
List-I | List-II |
---|---|
(A) Confidence level | (I) Percentage of all possible samples that can be expected to include the true population parameter |
(B) Significance level | (III) The probability of making a wrong decision when the null hypothesis is true |
(C) Confidence interval | (II) Range that could be expected to contain the population parameter of interest |
(D) Standard error | (IV) The standard deviation of the sampling distribution of a statistic |