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Chapter 8: Q.3.1 (page 511)

Define the parameter of interest.

Short Answer

Expert verified

Parameter of interest is the variable on which whole focal point of the scientist lies. Here, rate of healing wounds is being estimated by the biologists. In this way, one might say that the mean healing rate of wounds is the parameter of interest.

Step by step solution

01

Given information

Given in the question that, Biologists studying the healing of skin wounds measured the rate at which new cells closed a cut made in the skin of an anesthetized newt. Here are data from a random sample of 18newts, measured in micrometers (millionths of a meter) per hour:

292734402228143526351230231811222333

We need to define the parameter of interest.

02

Explanation

The given dataset is

29
27
34
40
22
28
14
35
26
35
12
30
23
18
11
22
23
33

Parameter of interest is the variable on which whole focal point of the scientist lies. Here, rate of healing wounds is being estimated by the biologists. In this way, one might say that the mean healing rate of wounds is the parameter of interest.

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Most popular questions from this chapter

A quality control inspector will measure the salt content (in milligrams) in a random sample of bags of potato chips from an hour of production. which of the following would result in the smallest margin of error in estimating the mean salt content M?

(a) 90% confidence; n=25.

(b) 90% confidence; n=50.

(c) 95% confidence; n=25.

(d) 95%confidence; n=50.

(e) n=100 at any confidence level.

A TV poll A television news program conducts a call-in poll about a proposed city ban on handgun ownership. Of the 2372 calls, 1921 oppose the ban. The station, following recommended practice, makes a confidence statement: "81%of the Channel 13 Pulse Poll sample opposed the ban. We can be 95% confident that the true proportion of citizens opposing a handgun ban is within1.6% of the sample result."

(a) Is the station's quoted 1.6% margin of error correct? Explain.

(b) Is the station's conclusion justifed? Explain.

Conditions Martin says that the relative importance of the three conditions for performing inference is, in order from most to least important, Independent, Normal, and Random. Write a brief note to Martin explaining why he is incorrect.

Teens" online profiles Describe a possible source of error that is not included in the margin of error for the 95% confidence interval in Exercise 36

The weights (in pounds) of three adult males are 160,215and195. The standard error of the mean of these three weights is

(a) 190

(b) 27.84

(c) 22.73

(d) 16.07

(e)13.13
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