Answer:
a and b
Step-by-step explanation:
............. ...... ..
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

=> 
=> 
Slope intercept form is
y = mx + b
where m is the slope and b is the y intercept.
Here we have
y = 9x - 2
so a slope of 9 and y intercept of -2
Answer: third choice
Answer:
X = 103
Step-by-step explanation:
if a circle is 360
half would be 180
the angle is 77
so 180 - 77 = 103
Picture won’t open for me... if you reply to this with the questions I can definitely help you.