The answer will be for every x, y will be 1.25
Answer: 100
5
Step-by-step explanation:
a) The mean of a normal distribution is also the median. Half the population will have values above the mean. Half of 200 is 100, so ...
... 100 students will have grades above 70%.
b) 84% is 14% above the mean. Each 7% is 1 standard deviation, so 14% is 2 standard deviations above the mean. The empirical rule tells you 95% of the population is within 2 standard deviations of the mean, so about 5% of students (10 students) got grades higher than 84% or lower than 56%. The normal distribution is symmetrical, so we expect about 5 students in each range.
... about 5 students will have grades above 84%.
The remaining area is 20% of the previous area.
Hope this Helps!
Answer:
Step-by-step explanation:
GIVEN: kayden paddled a canoe to an island. the island is 
miles from the shore. his trip to the island took two hours while paddling against the current. he paddles 
mph with no current.
TO FIND: what was the speed of the current.
SOLUTION:
distance of island from the shore 
miles
total time taken by Kayden 
hours
speed of Kayden in still water 
Let the speed of current be 
Speed of Kayden against current 
As,
Hence speed of current is
