Reference no: EM131476020
Assignment
1. Explain the meaning of a point estimate and an interval estimate.
a. The value of a sample statistic used to estimate a population parameter is called an interval estimate. A point estimate is an interval that is constructed around the interval estimate, and it is stated that this interval is likely to contain the corresponding population parameter.
b. A point estimate is a population parameter used in calculations while an interval estimate is an interval that is constructed around the point estimate, and it is stated that this interval is likely to contain the corresponding population parameter.
c. The value of a sample statistic used to estimate the standard deviation is an interval estimate, and a point estimate is the value of a sample statistic used to estimate the mean.
d. The value of a sample statistic used to estimate a population parameter is called a point estimate. In interval estimation, an interval is constructed around the point estimate, and it is stated that this interval is likely to contain the corresponding population parameter.
e. The value of a sample statistic used to estimate the mean is an interval estimate, and a point estimate is the value of a sample statistic used to estimate the standard deviation.
2. For a data set obtained from a sample of size n = 144 with it is known that σ = 5.6.
(a) What is the point estimate of µ?
(b) Find z score corresponding to a 95% confidence level, zα/2. Recall that (1 - α)100% = 95%.
(c) Construct a 95% confidence interval for µ.
(d) What is the margin of error in part (c)?
Question 4:
Consider versus
A random sample of 35 observations taken from this population produced a sample mean of 40.29. The population is normally distributed with
Calculate the p-value. Round your answer to four decimal places.
|
Price-conscious and prestige-conscious customers
: How are value-conscious, price-conscious and prestige-conscious customers likely to react to the price of a wind turbine?
|
|
Write a function cubic lnterp two-d
: Write a function Cubiclnterp2D. Determine i and j as in Linear Interp2D. Let cr(x) be the cubic interpolant of f at (Xi-I, v-). (Xi, v-). (XHI, v-).
|
|
Labour markets in professional sports
: In reference to labour markets in professional sports, discuss how players are paid.
|
|
Decided to build an ethanol plant
: Piercing the Corporate Veil Local farmers in Manchester, Iowa, decided to build an ethanol plant.
|
|
Find z score corresponding to a confidence level
: Find z score corresponding to a 95% confidence level, za/2. Recall that (1 - a)100% = 95%. Construct a 95% confidence interval for µ.
|
|
Canadian treatment of foreign corporate incomes
: Which of the conditions fits the Canadian treatment of foreign corporate incomes best? equal?
|
|
Define the principles of graphic design
: You have been asked to provide an expert review of the Kakadu National Park (Jabiru, Northern Territory, Australia) web site.
|
|
Prepare tables that show how firms estimated value changes
: You are a financial analyst at a leading company. Prepare tables that show how firm's estimated value changes as you vary the key inputs over relevant ranges.
|
|
What population does your hypothetical program serve
: What is the clinical area of concern (depression, anxiety, PTSD, eating disorders, self-esteem, et cetera) that your program is designed to address?
|