8, 18, 10,14, 18, 11, 13, 14, 13, 17, 15, 8, 16, and 13
8, 18, 10,14, 18, 11, 13, 14, 13, 17, 15, 8, 16, and 13
The following are scores obtained by some students in a test. How many students scored above the mean score?
10
9
8
7
Correct answer is D
Mean = \(\frac{8 + 18 + 10 + 14 + 18 + 11 + 13 + 14 + 13 + 17 + 15 + 8 + 16 + 13}{14}\)
Mean = \(\frac{188}{14}{\)
Mean = 13.4
Number above the mean is 7
Find the values of p for which the equation x2 - (p - 2)x + 2p + 1 = 0...
If s = (2 + 3t)(5t - 4), find ds/dt when t = 4/5 secs ...
Find P if \(\frac{x - 3}{(1 - x)(x + 2)}\) = \(\frac{p}{1 - x}\) + \(\frac{Q}{x + 2}\)...
Find the length of a chord 3cm from the centre of a circle of radius 5cm ...
Without using tables find the numerical value of log749 + log7(\(\frac{1}{7}\))...
Evaluate (1/2 - 1/4 + 1/8 - 1/16 + ...) - 1 ...
The radius of a geographical globe is 60cm. Find the length of the parallel of latitude 60oN...
Find the average of the first four prime numbers greater than 10 ...
The interior angles of a quadrilateral are (x + 15)°, (2x - 45)°, ( x - 30)° and (x...