Answer:
Step-by-step explanation:
Given that the difference of sample means of two populations is 108.7, and the standard deviation of the difference in sample means is 32.
H0: difference inmeans =0
Ha: difference inmeans not equal to 0
(Two tailed test)
Test statistic = mean difference/std deviation
For 68% confidence level, }z}<1
Here z =3.40 >1
Hence reject null hypothesis
The difference between the means cannot be 0 and there is statistical evidence at 68% level to reject null hypothesis
D=5
to make the $75 for the $125
To convert the decimal 0.928 to a fraction, just follow these steps:
Step 1: Write down the number as a fraction of one:
0.928 = 0.928
1
Step 2: Multiply both top and bottom by 10 for every number after the decimal point:
As we have 3 numbers after the decimal point, we multiply both numerator and denominator by 1000. So,
0.928
1
= (0.928 × 1000)
(1 × 1000)
= 928
1000
.
Step 3: Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(928,1000) = 8. So,
(928÷8)
(1000÷8)
= 116
125
when reduced to the simplest form.
Answer:
a = 2 [m/s²]
Step-by-step explanation:
Here we need to think back to our good old friend Newton and his second law:
F = m·a
The first thing we are given is that when m = 22 [kg], a = 3 [m/s²]. With this, we can calculate F:
F = 22 · 3 = 66 [N]
Now that we have the force acting upon the two objects, we can calculate the second object's acceleration using this force:
F = m·a
⇒ a = F / m (divide both sides by m)
⇒ a = 66 / 33 = 2 [m/s²]
<span>2
— = 0.66667
3 hello
</span>