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:
The answer is <u>5625</u>
Step-by-step explanation:
Lets break up the problem
So you have two things: 5^4 and 3^2
Solve seperately
Gives you 625 and 9
Then multiply both together
625*9 = <u>5625</u>
Hes using trigonomtery of a right angled triangle.
tan 72 = x / 12.25 where x = height of the wall
x = 12.25 * tan 72 = 37.7 feet
Answer:
3<x<7
Step-by-step explanation:
if a < u < b then a<u and u<b
3<2x-3 and 2x-3<11
3<2x-3 x>3
2x-3<11
x<7
x>3 and x<7
