Determine the hypothesised value, Basic Statistics

Assignment Help:

Read Confidence Intervals and P-values in Section C of your Lecture Workbook or on Cecil under Assignment Resources. Consider a study to determine ways the response rate in surveys can be improved. Two types of approaches are under consideration - telephoning prior to mailing out or not telephoning prior to mailing out the survey questionnaire. Telephoning people would create additional expenses. Therefore the question is, does telephoning people prior to mailing out the survey questionnaire have a beneficial effect on the response rate? In addition, market research companies consider that a difference in response rate of less than 8% would be of no consequence, whereas a difference of 8% or more could result in considerable benefits. Some possible outcomes of the study are:

2147_What is the hypothesised value.png

Notes: 1. PTel - PNoTel = the difference between the true proportion of people who would respond to the survey having received a telephone call (PTel ) and the true proportion of people who would respond to the survey having not received a telephone call (PNoTe).

2. The hypotheses associated with the quoted P-values are:

H0 : PTel - PNoTel = 0 vs H1 : PTel - PNoTel ≠ 0

(a) (i) What is the hypothesised value?

(b) Which case(s) demonstrates, at the 5% level, that the difference in the sample proportions between the response rates for the two survey approaches, , is statistically significant?

(c) For which case(s) are we able to claim that the underlying difference between the response rates for the two survey approaches:

(i) is clearly big enough to have practical significance?

(ii) is too small to have practical significance?


Related Discussions:- Determine the hypothesised value

Probability, what is an exclusive probability

what is an exclusive probability

Generate a hypothesis test , An instructor wants to determine which of his ...

An instructor wants to determine which of his students are A students and which are B students (this is a graduate course, so clearly all the students are either A or B stu

Managerial, Manchester Custom Fabricating Company uses a job order system. ...

Manchester Custom Fabricating Company uses a job order system. At the beginning of May, Manchester had two jobs in process, Job #22 (DM = $600 and DL = $780), and Job #23 (DM = $75

Long term credit decision, Long Term Credit Decision In no more than o...

Long Term Credit Decision In no more than one typed page, provide a statement of your decision to lend or not lend to this company based on your interpretation of the company'

Accounting standards in united states, United States: There are currently ...

United States: There are currently more than 10000 companies that are registered with the SEC (Securities Exchange Commission). Of these, around 1000 are non US companies. The non

Increasing the magnetic field inside a coil, Someone tries to increase the ...

Someone tries to increase the magnetic field inside a coil by adding more turns to the coil. Where should he add more turns: to the end of the coil (i.e., to make it longer) or to

Management accounting, Q. CRSL has a large auditorium which can cater for ...

Q. CRSL has a large auditorium which can cater for 300 people and is ideal for formal balls and functions. The auditorium can also be reconfigured to cater for 100 people. The Sea

#title.research.methods and statistics, identify a research report publishe...

identify a research report published by reputable agencies and evaluate the following ;the problem that was addressed

Probability tree., Modern hotels and certain establishments make use of an ...

Modern hotels and certain establishments make use of an electronic door lock system. To open a door an electronic card is inserted into a slot. A green light indicates that the doo

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd