A shop sells raincoats and umbrellas. The scatter graph shows the monthly sales for 12 months.
200
a) Write down the type of
correlation shown by
the graph
150
XX
X
X
Sales of
raincoats (E)
X
Х
100
х
Х
x
b) The manager expects the
sales of umbrellas next
month to be £70
Draw a line of Lust fit and
use it to estimate the sale
of raincoats next month.
£
X
50
X
X
(3)
0
20
80
100
40
60
Sales of umbrellas (E)
Total marks: 4

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

In tossing one coin 10 times, what are your chances for tossing a head? a tail? 2. in tossing one coin 100 times, what are your chances for tossing a head? a tail? 3. in tossing one coin 200 times, what are your chances for tossing a head? a tail? deviation = ((absolute value of the difference between expected heads and observed heads) + (absolute value of the difference between expected tails and observed tails)) divided by total number of tosses. this value should always be positive. 4. what is the deviation for 10 tosses? 5. what is the deviation for the 100 tosses? 6. what is the deviation for 200 tosses? 7. how does increasing the total number of coin tosses from 10 to 100 affect the deviation? 8. how does increasing the total number of tosses from 100 to 200 affect the deviation? 9. what two important probability principles were established in this exercise? 10. the percent of occurrence is the obtained results divided by the total tosses and multiplied by 100%. toss the coins 100 times and record your results. calculate the percent occurrence for each combination. percent head-head occurrence: percent tail-tail occurrence: percent head-tail occurrence:

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?