10$ because i worked it out and valedictorian in my math class so listen to me yeah
Answer:
a) 3.0779
b)2.3264
Step-by-step explanation:
Please see attachment .
Answer:
0.9
Step-by-step explanation:
because if you multiply 0.9 by 5 it equals 4.5, why?
well 0.9 isn't a full number it's not even 1!
If you multiply
5 × 1 = 5
so if you multiply what's smaller than 1 by 5
5 × 0.9 = 4.5
Hope this helps!
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Answer:
Yes the conclusion in the question is a reasonable conclusion
Step-by-step explanation:
From the question we are told that
The sample size is
The sample mean for USA is 
The sample mean for Mexico is 
The sample standard deviation for USA is 
The sample standard deviation for Mexico is 
The null hypothesis is 
The alternative hypothesis is 
Generally the test statistics is mathematically represented as

=> 
=> 
From the z table the area under the normal curve to the left corresponding to -10 is

Generally from the value obtained we see that
The p-value is <
hence
The decision rule is
Reject the null hypothesis
The conclusion is
The is sufficient evidence to conclude that adults in the United States get less sleep on work nights than adults in Mexico
Hence the conclusion in the question is a reasonable conclusion
Answer: 
Step-by-step explanation:
