Answer: 8
Step-by-step explanation:
The formula to find the t-test statistic for differences between in two population mean:-
,where = sample mean difference
SE= Sample error
Given : SE= 4 points
t-statistic = 2.00
Substitute theses values in the above formula , we get
Hence, the sample mean difference is
It’s just blank I’m sorry :( I can’t see the photo
Step-by-step explanation:
Given that,
Mass of Ella is 56 kg and mass of Tyrone is 68 kg.
Position of Ella is 1.5 m on the ramp.
Potential energy of an object is given by :
P = mgh
It is directly proportional to the position of an object.
If Tyrone stands at the top of ramp at more height than Ella, it will have more potential energy. Hence, the correct option is (d) "If Tyrone stands at the top of a 2 m high ramp, his potential energy will be greater than Ella's."
1 1/4 is the same as 5/4
Now we must get equal denominators
5/4 = 10/8
Now, we can subtract to find difference
10/8 - 3/8 = 7/8
7/8 of an inch longer