﻿ Econometrics作业代写 NPS代写 - 经济作业, 金融经济统计代写

# Econometrics作业代写 NPS代写

2021-10-24 11:43 星期日 所属： 经济作业 浏览：43

## Homework Assignment 1 (Due: Monday, September 28)

Econometrics作业代写 The manager collects data on NPS, personality types, and certificates for 120 sales reps. Refer to the NPSdata to answer

• ### A human resources manager at a software development firm would like to analyze the net promoter score (NPS) of sales reps at the company.  Econometrics作业代写

The NPS is a key indicator of customer satisfaction and loyalty, measuring how likely a customer would recommend a product or company to others on a scale of 0 (unlikely) to 10 (very likely). The manager believes that NPS is linked with the sales rep’s personality type (Analyst, Diplomat, Explorer, and Sentinel) and the number of professional certifications (Certificates) he/she has earned. The manager collects data on NPS, personality types, and certificates for 120 sales reps. Refer to the NPSdata to answer the following questions.   Econometrics作业代写

• Estimate a linear regression model using NPS as the dependent variable.  The explanatory variables include the number of certificates along with the appropriate dummy variables for personality type. (1 point)
• ### Construct and interpret the 95% confidence and prediction intervals for a diplomat and an analyst with three certificates. (1 points)  Econometrics作业代写

Diplomat:

Analyst:

• As expected, the prediction intervals are wider because they also account for the variability caused by the random error term.
• Test if NPS differs between diplomats and analysts at the 5% significance level. (2 points)

; p-value = 1.48e-06;  reject the null; NPS differs between diplomats and analysts at the 5% significance level. Econometrics作业代写

• Test if NPS differs between diplomats and explorers at the 5% significance level. (2 points)

; p-value = 0.156; do not reject the null; cannot conclude that NPS differs between diplomats and explorers at the 5% significance level.

• At the 5% significance level, is the Apple stock not as risky as the market?(3 points)

p-value = 0.9655  (2*pt(0.0436, 33, lower.tail = FALSE))

Do not reject the null

We cannot conclude at the 5% significance level that Apple stock not as risky as the market.  Econometrics作业代写

• At the 5% significance level, are there abnormal returns?  (1 point)

; p-value = 0.4126

Do not reject the null

We cannot conclude at the 5% significance level that there are abnormal returns.