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2 years ago

May someone please help me with this question? With Step-by-step

Mathematics

2 answers:

Basile [38]2 years ago

8 0

Answer:

32.92

Step-by-step explanation:

well you just do base times height

the height is 3.5

the area of the base is 3 * pi which is 9.42 if you round pi to 3.14

so 3.5*9.42= 32.92

Ainat [17]2 years ago

5 0

Answer: 98.91 ft^3

Step by step solution: See Photo

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Construct the confidence interval for the population mean mu. c = 0.90, x = 16.9, s = 9.0, and n = 45. A 90% confidence inte

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Answer:

The 90% confidence interval for population mean is $14.7 < \mu < 19.1$

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From the question we are told that

The sample mean is $\= x = 16.9$

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The standard deviation

Now given that the confidence level is 0.90 the level of significance is mathematically evaluated as

$\alpha = 1-0.90$

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Next we obtain the critical value of $\frac{\alpha }{2}$ from the standardized normal distribution table. The values is $Z_{\frac{\alpha }{2} } = 1.645$

The reason we are obtaining critical values for $\frac{\alpha }{2}$ instead of that of $\alpha$ is because $\alpha$ represents the area under the normal curve where the confidence level 1 - $\alpha$ (90%) did not cover which include both the left and right tail while $\frac{\alpha }{2}$ is just considering the area of one tail which is what we required calculate the margin of error