Estimate the sum of 604 and 235 by rounding both values to the nearest hundred. What is the best estimate of the sum?
2 answers:
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For this case we have that the cost of candies is given by:
If we have to:
c: Represents the cost of candy
p: Represents the number of pounds of candy
So, we can raise the following equation:
Answer:
The equation is:
Option C
Answer:
Step-by-step explanation:
From the given information:
The null hypothesis and the alternative hypothesis can be computed as:
(i.e. there is no difference between the SAT score for students in both locations)
(i.e. there is a difference between the SAT score for students in both locations)
The test statistics using the students' t-test for the two-samples; we have:
t = 2.06
degree of freedom = ( ) -2
degree of freedom = (45+38) -2
degree of freedom = 81
Using the level of significance of 0.05
Since the test is two-tailed at the degree of freedom 81 and t = 2.06
The p-value = 0.0426
Decision rule: To reject if the p-value is less than the significance level
Conclusion: We reject the , thus, there is no sufficient evidence to conclude that there is a significant difference between the SAT math score for students in Pennsylvania and Ohio.