Exam 28: Using Statistics for Decision Making

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Use the following to answer the question below. The time series graph below shows monthly sales figures for a specialty gift item sold on the Home Shopping Network (HSN). -The dominant time series component in these data is

(Multiple Choice)

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Question 21

Use the following to answer the question(s) below. Sunny Side Condominiums recently purchased land outside of Toronto and is trying to decide the size complex it should build (large or small). The following payoff table (in thousands of dollars) considers three possible levels of demand. -Using the maximax approach, Sunny Side should

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Question 22

The standard deviations (in thousands of dollars) for building a small and large complex are 535 and 976, respectively. Based on the resulting coefficients of variation (CV), which of the following statements would be true?

(Multiple Choice)

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Question 23

Use the following to answer the question(s) below. The monthly returns on a social choice portfolio comprised of "green" companies are shown below for the last six months of 2015. Month Monthly Return July 2.2 % August 2.5 September 1.8 October 1.4 November 1.1 December 1.9 -Use a single exponential smoothing (SES) model with α = 0.8 to forecast for January 2016. Assume that the forecast for December 2015 was 1.18%.

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Question 24

Use the following to answer the question(s) below. As a result of the financial crisis in the fall of 2008, when the government intervened to help the economy, an investor was considering various strategies for her money and the estimated profits would depend on how successful the intervention would be in helping the economy. The estimated annual return for two different investment strategies are shown in the following table. -If there is a 30% chance that the economy will decline, 50% that there will be no change and 20% chance that it will rebound, the expected value associated with the best investment strategy is

(Multiple Choice)

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Question 25

Use the following to answer the question(s) below. As a result of the financial crisis in the fall of 2008, when the government intervened to help the economy, an investor was considering various strategies for her money and the estimated profits would depend on how successful the intervention would be in helping the economy. The estimated annual return for two different investment strategies are shown in the following table. -Using the maximax approach, the investor should

(Multiple Choice)

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Question 26

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Use the following to answer the question below. The time series graph below shows monthly sales figures for a specialty gift item sold on the Home Shopping Network (HSN). -The dominant time series component in these data is

The standard deviations (in thousands of dollars) for building a small and large complex are 535 and 976, respectively. Based on the resulting coefficients of variation (CV), which of the following statements would be true?

Data

Surveys and Sampling

Displaying and Describing Categorical Data

Displaying and Describing Quantitative Data

Scatterplots, Association, and Correlation

Introduction to Linear Regression

Randomness and Probability

Random Variables and Probability Distributions

Sampling Distributions

Confidence Intervals for Proportions

Testing Hypotheses About Proportions

Confidence Intervals and Hypothesis Tests for Means

Comparing Two Means

Design of Experiments and Analysis of Variance Anova

Inference for Counts: Chi-Square Tests

Nonparametric Methods

Inference for Regression

Understanding Regression Residuals

Multiple Regression

Building Multiple Regression Models

Time Series Analysis

Decision Making and Risk

Quality Control

Exploring and Collecting Data

Understanding Probability Distributions and Statistical Inference

Exploring Relationships Among Variables

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