PLEASE HELP! I REALLY NEED IT
2 answers:
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Complete Question
The complete question is shown on the first uploaded image
Answer:
a
Yes the researcher can conclude that the supplement has a significant effect on cognitive skill
b
c
The result of this hypothesis test shows that there is sufficient evidence to that the supplement had significant effect.The measure of effect size is large due to the large value of Cohen's d (0.5778 > 0.30 )
Step-by-step explanation:
From the question we are told that
The sample size is n=16
The sample mean is
The standard deviation is
The population mean is
The level of significance is
The null hypothesis is
The alternative hypothesis is
Generally the test statistics is mathematically represented as
=>
=>
Generally the p-value is mathematically represented as
From the z-table
=>
=>
From the obtained values we see that
Decision Rule
Reject the null hypothesis
Conclusion
There is sufficient evidence to conclude that the supplement has a significant effect on the cognitive skill of elderly adults
Generally the Cohen's d for this study is mathematically represented as
=>
=>
Option C is correct. the functions that would not be a possible function for f (x) and g(x) are f(x) = and g(x) = x
Given the composite function
We are to look for two functions f(x) and g(x) that will not give the same function
Using trial and error,
If f(x) = and g(x) = x
Determine the f(g(x)) for this function
f(g(x)) = f(x)
This is gotten by simply replacing x with x in f(x). This will return back the function f(x) making this the right choice.
f(g(x)) =
Since,
, hence the functions that would not be a possible function for f (x) and g(x) are f(x) =
and g(x) = x
Learn more here: brainly.com/question/3256461
Answer:
Step-by-step explanation:
Let the variable be taken as 'r'.
Then, by raising it to the 7th power, we'll get the result as
Now, by doubling the result....