7 students because 18 + 1 + 7 = 26
33 - 26 = 7
Answer: Conclusion validity is the degree to which conclusions we reach about relationships in our data are reasonable.
Step-by-step explanation:
Answer:
Type I
No error
Type II
Type II
Step-by-step explanation:
Type I error: A type I error occurs when the null hypothesis is rejected when it is actually true
Type II error: A type II error occurs when the one fails to reject the null hypothesis when it is actually not true.
Type I Type II
Reject H₀ when true Accept H₀ when not true
a. A type I error has been made since we rejected the null hypothesis when it was actually true. Proportion was actually 28%.
b. Neither error has been made because there is no evidence of an alternative hypothesis been made.
c. A type II error has been made because she failed to reject the null when it was actually not true i e the mean is different and higher than the null hypothesis.
d. A type II error was made since we fail to reject the null hypothesis when the value observed was actually higher than 25%.
4 students went abroad. 32 divided by 8 is 4. If you take 1 group of the 8 that is 4 students going abroad
X + y = 4
x - y = -6
--------------add
2x = -2
x = -2/2
x = -1
x + y = 4
-1 + y = 4
y = 4 + 1
y = 5
solution is : (-1,5)