Educational purpose

1. MATHEMATICS IN
THE MODERN
WORLD (GE 4)

2. Test Items


3. 2. Use a difference table to predict
the next term in the sequence.
2, 7, 24, 59, 118, 207
Test Items

4. 3. Assume the pattern shown by the square
tile in the following figures. What is the nth
term formula for the number of tiles in the nth
figure of the sequence?
Test Items

5. 4. Apply Polya’s problem solving
strategy: The product of the ages,
in years, of three teenagers is 4590.
None of the teens are the same
age. What are the ages of the
teenagers?
Test Items

6. 5. Find the mean, median, mode,
range, population variance, and
population standard deviation for
the following: 12, 17, 14, 12, 8, 19,
21
Test Items

7. 6. The following table gives the frequency
distribution of the number of orders received
each day during the past 50 days at the office
of a mail-order company. Calculate the mean,
median, mode, range, variance and standard
deviation of the grouped data.
Test Items
Number of order f
10 – 12
13 – 15
16 – 18
19 – 21
4
12
20
14
n =50

8. 7. A consumer group tested a sample
of 100 light bulbs. It found that the
mean life expectancy of the bulbs
was 842 h, with a standard deviation
of 90, one particular light bulb from
the DuraBright Company had a z-
score of 1.2. What was the life span
Test Items

9. Test Items
8. Find the area under the standard
normal distribution curve between z=
1.03 and z = -0. 37 (-0.37<z<1.03)
(use z value table)

10. Test Items
9. A soda machine dispenses soda
into 12-ounce cups. Test show that
the actual amount of soda
dispensed is normally distributed
with a mean of 11.5 oz. and a
standard deviation of 0.2 oz. If a
cup is filled at random, what is the