Answer:
43
Step-by-step explanation:
You would take 5% as a decimal (0.05) and multiply 860 by the decimal.
90kg
It is just a simple proportional problem. If you subtract 10%, then you subtrat 10 kg.
I can do a factor expression
5(2x+7)
Is that what you want or is there something else
Answer: 2.508
Step-by-step explanation:
As per give , we have
Sample size : n= 23
Degree of freedom : df= n-1=22
significance level :
Since , the sample size is small (n<30) and population standard deviation is unknown.
So , we use t-test.
For confidence interval , we find two-tailed test value.
Critical t-value :
[using students's t-critical value table]
Hence, the critical value that should be used in constructing the confidence interval = 2.508
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