A certain reported that in a survey of 2006 American adults,

a) Calculate a confidence interval at the

(_______, _______)

b) What sample size would be required for the width of a

tabita57i
2021-09-22
Answered

A certain reported that in a survey of 2006 American adults,

a) Calculate a confidence interval at the

(_______, _______)

b) What sample size would be required for the width of a

You can still ask an expert for help

escumantsu

Answered 2021-09-23
Author has **98** answers

a) Given data,

Z-value at

Margin of error

The

Step 2

b)

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Construct the

What does the result suggest about the mean wake time of 101.0 min before the treatment? Does the drug appear to be effective?

The confidence interval ▼ does not include| includes the mean wake time of 101.0 min before the treatment, so the means before and after the treatment ▼ could be the same |are different. This result suggests that the drug treatment ▼ does not have | has a significant effect.

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b) What can we assert with

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The average zinc concentration recovered from a sample of measurements taken in 36 different locations in a river is found to be 2.6 grams per liter. Find the 95% confidence intervals for the mean zinc concentration in the river. Assume that the population standard deviation is 0.3 gram per liter.

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Use the Intermediate Value Theorem to show that there is a root of the given equation in the specified interval. ${x}^{4}+x-3=0,$ (1,2)

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Consider the following.

from

(a) Approximate the area under the curve over the specified interval by using the indicated number of subintervals (or rectangles) and evaluating the function at the right-hand endpoints of the subintervals.

(b) Approximate the area under the curve by evaluating the function at the left-hand endpoints of the subintervals.