Answer:
18
Step-by-step explanation:
6+6+3+3=18
Please Brainliest!!!
In getting the scale factor, use the formula:
Scale factor = big / small
Scale factor = 8 / 2
Scale factor = 4 units
Answer:
Your answer would be C!
Step-by-step explanation:
Have a good day :D.
We are given the data on the number of candies handed by neighborhood A and neighborhood B.
Let us first find the mean and variance of each neighborhood.
Mean:


Variance:


A. Null hypothesis:
The null hypothesis is that there is no difference in the mean number of candies handed out by neighborhoods A and B.

Research hypothesis:
The research hypothesis is that the mean number of candies handed out by neighborhood A is more than neighborhood B.

Test statistic (t):
The test statistic of a two-sample t-test is given by

Where sp is the pooled standard deviation given by


So, the test statistic is -1.74
Critical t:
Degree of freedom = N1 + N2 - 2 = 6+6-2 = 10
Level of significance = 0.05
The right-tailed critical value for α = 0.05 and df = 10 is found to be 1.81
Critical t = 1.81
We will reject the null hypothesis because the calculated t-value is less than the critical value.
Interpretation:
This means that we do not have enough evidence to conclude that neighborhood A gives out more candies than neighborhood B.
Answer:
x = 9.6
Step-by-step explanation:
Since point C is on line segment RB.
Therefore,
RC + CB = RB
2x + 9 + 3x - 12 = 45
5x - 3 = 45
5x = 45 + 3
5x = 48
x = 48/5
x = 9.6