I think the answer is (-2-\sqrt(10))/(3)
i know that looks wierd...sorry...i hope this helps
The answer is five 5 hope it helps you out :)
Answer:
1: k = 7
2: x= - 3
Step-by-step explanation:
sorry i don't know if u need an explanation
hope it helped tho
Solution :
This is the two tailed test.
The null hypothesis and the alternate hypothesis is as :
Null hypothesis is 
Alternate hypothesis is 

Therefore, the critical value of z is :

Now the test statics is :



The test statics is 0.878
We see that it is a right tailed test.


= 0.3800
Thus , P-value > α
So we fail to reject the null hypothesis.