The answer is b the median decreased and the median increased
For one toss: 1/2
you toss it 3 times
1/2 •1/2•1/2
1/8= probability of all heads
80 units
Step-by-step explanation:
Step 1 :
Given,
The function representing the height is y = 4x^2-32x+80
where the x represents the time after they jumped and y represents their height above ground.
We need to find the platform's height.
Step 2 :
Since x represents the time after they jumped, x = 0 when they have not started jumping and the corresponding y will give the height before they start jumping which would be the height of the platform
Step 3:
When x = 0 we have
y = 0-0+80 = 80
So the height of the given platform is 80 units.
Answer:
Step-by-step explanation:
Given that sample size n = 88, for eight grade students
scores on a national mathematics assessment test has a mean score of 278. This test result prompts a state school administrator to declare that
x bar >270

(One tailed test at 15% sign level)
Since sigma, population sd is known and sample size is large we use z test
Std error = 
Mean difference 278-270=8
Z statistic = 
p value = 0.024
Since p <alpha, the administrator's declaration is correct.
Answer:

Step-by-step explanation:
Read the problem carefully and figure out where it says plus and where it says per. Per implies multiplication. Plus is addition.
220+0.15x
To solve, plug in 355 for the answer and back solve for x.
