I think it is 55 because 85-30 = 55
Hope this helps! :D
It a because negative times a negative is a positive
Answer:
z < 2
Step-by-step explanation:
1.4z + 2.2 > 2.6z - 0.2
add 0.2 to both sides
1.4z + 2.4 > 2.6z
subtract 1.4z from both sides
2.4 > 1.2z
divide by 1.2
2 > z
Answer:
The data provide strong evidence that young men weigh more on average than old men in the U.S
Step-by-step explanation:
Given :
The null hypothesis ; H0 : μ1 = μ2
The alternative hypothesis ; H1 : μ1 > μ2
T score = 5.3 ; Pvalue = < 0.0001
The decision region :
If Pvalue < α ; We reject the Null
If Pvalue > α ; We fail to reject the Null
When the α - level isn't stated, we usually assume a α - level of 5%
However, even at lower alpha level of 1% = 0.01 ;
The Pvalue < α
Hence, we can conclude that there is significant evidence that there is difference in the mean weight of young men and old men in the U.S
