Answer:
Does the dot mean multiply? If so, I think the answer is 7^6
Answer: 0.42
Step-by-step explanation:
Given: Mean :
Standard deviation :
Sample size :
The formula to calculate z score is given by :-
For X=960
The p-value =
Hence, the probability that a single randomly selected value is at least 960 dollars = 0.42
50 cm in meters is 0.5 m
Area covered by a tile = 0.5 * 0.5 = 0.25 m^2
Total area for floor = 5 * 4 = 20 m^2
Tiles required = 20/0.25 = 80 tiles
If 10 tiles cost £7.50 then 1 tile = <span>£7.50/10
then 80 tiles = 7.50/10 * 80 = </span><span>£60.00</span>
Number 11 would be y= 9x- 6