Answer:
And the 95% confidence interval would be between (69.027;80.793)
Step-by-step explanation:
Information given
represent the sample mean
population mean (variable of interest)
represent the population standard deviation
n=33 represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
(1)
The degrees of freedom are given by:
The Confidence level is 0.99 or 99%, the significance would be and , the critical value for this case would be
And replacing we got:
And the 95% confidence interval would be between (69.027;80.793)
Yes, the products are equal because of commutativity. To find the product, use distributive law. Just simplify the below:
-2x^3(x^3-3x-4) + x(x^3-3x-4) - 5(<span>x^3-3x-4).</span>
Answer: 1460.06
Explanation: google
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The answers are as follows, I hope:
Yes
No
Yes
Yes