Phone Technolgy

Executive Summary

Phones have become a necessary part of life. Phones have come a long way from the place they were only a few decades ago. Now, just about every family owns a cell phone. In some cases, we no longer have landline phones but just cell phones. Families stay connected with cell phone packages. But, is the cell phone a better choice over the landline? This research effort was undertaken by the Pew Research Center, in conjunction with the Associated Press and AOL, to assess the challenge posed by cell phones to random digit dial surveys. The project entailed a survey of 1,503 U.S. adults, with 752 interviewed in a conventional landline sample and 751 interviewed on their cell phones, using a sample drawn from a nationally representative cell telephone number database. The interviews were conducted March 8-28, 2006 and averaged about 11 minutes in length. Among those interviewed on their cell phones, 200 (27%) said that their cell phone was their only phone. The alternate hypothesis stated the population users that owned a cell phone and land line was greater than 27%. The null hypothesis stated that the population users that owned just a cell phone were less than 27%. A 95% confidence level was chosen. The results of the survey indicated that we should reject the null hypothesis and accept the alternative. With a 90% confidence level, we can be certain that more than 27% of the population currently own a cell phone and have a landline phone.

Introduction

Using a cell phone as your primary phone line is becoming increasingly common. I think as long as you can get adequate reception in your home and don't make many international calls, it can be done. One of the many benefits is that it can be a major cost saver as oppose to paying two phone bills.

The purpose of this paper is to analyze the data given and determine if this is a trend headed towards owning just a cell phone rather than the traditional land line and cell phone. According to the U.S. Consumer Expenditure Survey, the percentage of households paying a cell phone bill but not a landline bill rose from0.4% in 2000 to 7.8% in the first quarter of2005. The National Health Interview Survey estimated that, in the second half of 2005, 7.8%of adults lived in households with only a cell phone. And in the 2004 exit poll by the National Election Pool, 7.1% of voters said they relied solely on cell phones. The null hypothesis and the alternative were as follows:

Ho : p≥ .27

H1 : p<.27

The alternate hypothesis stated the population of users owned a cell phone and land line was greater than 27%. The null hypothesis stated that the population of users owned just a cell phone was less than 27%.

Analysis and Method

This research effort was undertaken