Answer:
C. 
Step-by-step explanation:
1. 
2. 
3. Equation solutions:
Answer:
C.
Step-by-step explanation:
Hypothesis testing procedure:
Hypothesis:
The null hypothesis will be the variances of sales of two musical stores are equal and the alternative hypothesis will be the variances of sales of two musical stores are not equal
Level of significance: alpha=0.05
Test statistic: F=variance A/variance B=(30)^2/(20)^2=900/400=2.25
P-value: p=0.107
As the alternative hypothesis mentioned that the variances are not equal this leads to two tailed test. so the p-value is calculated using excel function 2*F.DIST.RT(2.25,24,15).
Conclusion:
The p-value seems to exceed the alpha=0.05 and this depicts that the null hypothesis should not be rejected.
Answer:
2x + 2
Step-by-step explanation:
6x + 2 - 4x
(6x - 4x) + 2
2x + 2
Best of Luck!
Answer:
7000
Step-by-step explanation:
The right answer is the first circle
