Answer:
390 inches long
Step-by-step explanation:
The string = x
x = 390 inches
The question is on the picture
2 answers:
The best thing to do for this problem is to split the entire gasp into separate parts. It's easiest to draw the separate shapes out. I'll provide a picture for you, showing what I mean.
If you follow along with the image provided it should explain everything!
It's always nice to do things visually, it really helps to have more accuracy! Trust me! I'm not a mental math kind of girl.
(Your volume will be 406.)
Volume of entire shape= 406 cm^3
Now this should be the answer!
Hope this helps. If you have any questions let me know! :)
If you follow along with the image provided it should explain everything!
It's always nice to do things visually, it really helps to have more accuracy! Trust me! I'm not a mental math kind of girl.
(Your volume will be 406.)
Volume of entire shape= 406 cm^3
Now this should be the answer!
Hope this helps. If you have any questions let me know! :)
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Answer: No , at 0.05 level of significance , we have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.
Step-by-step explanation:
Let denotes the average hours of sleep per night.
As per given , we have
, since is left-tailed and population standard deviation is unknown, so the test is a left-tailed t -test.
Also , it is given that ,
Sample size : n= 22
Sample mean :
Sample standard deviation : s= 1.93
Test statistic :
i.e.
For significance level and degree of freedom 21 (df=n-1),
Critical t-value for left-tailed test=
Decision : Since the test statistic value (0.58) > critical value 1.7207, it means we are failed to reject the null hypothesis .
[Note : When , then we accept the null hypothesis.]
Conclusion: We have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.