Second Term Examination Mathematics SS 2 Second Term Lesson Notes
SECOND TERM EXAMINATION
Subject: Mathematics
Class: SS2
Time: 2 Hours
PART A: Objective Questions (Answer all questions)
-
Calculate the standard deviation of the following distribution: 2,3,4,4,5,6
(a) 1.29 (b) 1.35 (c) 2.04 (d) 2.50 -
Which of the following is not a measure of dispersion?
(a) Mode (b) Range (c) Standard deviation (d) Mean deviation -
A plane flies 90 km on a bearing of 030°, then flies 150 km due east. How far east of the starting point is the plane?
(a) 120 km (b) 165 km (c) 195 km (d) 240 km -
A town P is 150 km from town Q in the direction 50°. What is the bearing of Q from P?
(a) 50° (b) 130° (c) 230° (d) 270° -
The bearing of two points Q and R from a point P are 30° and 120° respectively. If |PQ| = 12 m and |PR| = 5 m, find the distance |QR|
(a) 13 m (b) 11 m (c) 9 m (d) 7 m -
Which of the following is equivalent to S 50° W?
(a) 40° (b) 130° (c) 220° (d) 230° -
A group of numbers are written in ascending order as (X-2), 8, (5+X), 12, (X+14). Find the range of the numbers.
(a) 12 (b) 14 (c) 16 (d) 20 -
A fair die is rolled once. What is the probability of obtaining 4 or 6?
(a) 1/12 (b) 1/6 (c) 1/3 (d) 1/2 -
What is the probability of having an odd number in a single toss of a fair die?
(a) 1/6 (b) 1/3 (c) 1/2 (d) 2/3 -
A number is chosen at random from the set [2,4,6,……18,20]. Find the probability that it is either a factor of 18 or a multiple of 5.
(a) 1/2 (b) 3/5 (c) 2/6 (d) 1/3 -
What is the probability of throwing a number greater than 2 with a single die?
(a) 1/6 (b) 1/3 (c) 1/2 (d) 2/3 -
The mean heights of three groups of students consisting of 20, 16, and 14 students are 1.67 m, 1.50 m, and 1.40 m respectively. Find the mean height of all the students.
(a) 1.52 m (b) 1.53 m (c) 1.54 m (d) 1.55 m -
Solve the inequality -2(13+X) ≥ 9+5X.
(a) X ≥ -5 (b) X ≤ -5 (c) X ≥ 5 (d) X ≤ 5 -
Solve 3(1 – X) ≤ 3.
(a) X ≤ -1 (b) X ≥ -2 (c) X ≤ 1 (d) X ≥ -3 -
Three balls are drawn one after the other with replacement from a bag containing 5 red, 9 white, and 4 blue balls. What is the probability of drawing one red, one white, and one blue?
(a) 5/102 (b) 5/136 (c) 5/162 (d) 5/200 -
A tree is 8 km due south of a building. Kofi is standing 8 km west of the tree. How far is Kofi from the building?
(a) 4 km (b) 8 km (c) 8√2 km (d) 16 km -
Find the bearing of Kofi from the building.
(a) 315° (b) 270° (c) 225° (d) 135° -
Esther was facing S 20° W and turned 90° clockwise. What direction is she facing now?
(a) N 70° W (b) S 70° E (c) N 20° W (d) S 20° E -
Calculate the variance of the numbers 5,11,13,14,17.
(a) 5.3 (b) 7.3 (c) 8.0 (d) 10.3 -
Find the mean deviation of 2,3,5,6.
(a) 1.0 (b) 1.2 (c) 1.4 (d) 1.5 -
What is the mean of 1,3,4,8,8,4,7?
(a) 4 (b) 5 (c) 6 (d) 7 -
The probabilities that John and James pass an examination are 3/4 and 3/5 respectively. Find the probability of both failing the examination.
(a) 1/10 (b) 3/10 (c) 9/20 (d) 11/20 -
A point X is on the bearing 342° from a point Y. What is the bearing of Y from X?
(a) 342° (b) 252° (c) 198° (d) 162° -
There are M boys and 12 girls in a class. What is the probability of selecting a girl at random?
(a) M/12 (b) 12/M (c) 12/(M+12) (d) 12/(M+12) -
If 2X + 5 ≤ 1 and X – 4 < 1, what is the range of values of X?
(a) X ≤ -2 (b) X ≤ -1 (c) X ≥ 3 (d) X ≤ 3
PART B: Theory Questions (Answer question 1 and any other 3 questions)
-
The table below shows the hourly wages of 50 workers in a factory.
82 132 199 248 300 89 145 200 249 324 94 152 206 255 334 96 156 214 263 348 98 158 220 265 369 108 163 221 270 381 114 176 232 270 401 120 178 235 280 440 125 185 206 288 477 128 189 247 294 485 (a) Construct a frequency distribution table using class intervals #0 – #49, #50 – #99, … #450 – #499.
(b) Calculate:
i. Mean
ii. Mean deviation
iii. Variance
iv. Standard deviation -
An airplane flies from A to B on a bearing 350° for 1.25 hours at 600 km/hr, then from B to C on a bearing 130° for 1.5 hours at 400 km/hr. Calculate:
(a) Distance from C to A
(b) Bearing of C from A -
Solve 4y – 7 ≤ 3y and 3y ≤ 5y + 8. Express the solution in the form a ≤ y ≤ b.
-
Find the inverse and determinant of the matrix:
[3124]\begin{bmatrix} 3 & 1 \\ 2 & 4 \end{bmatrix}[3214]
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