Question: When shall we call you? In Exercise IV.11, we learned of a study that dialed telephone numbers at random during two periods of the day.

When shall we call you? In Exercise IV.11, we learned of a study that dialed telephone numbers at random during two periods of the day. Of 2304 numbers called on weekday mornings, 1313 answered. Of 2454 calls on weekday evenings, 1840 were answered.

(a) Make a two-way table of time of day versus answered or not. What percentage of calls were answered in each time period? (Hint: See pages 522–523.)

(b) It should be obvious that there is a highly significant relationship between time of day and answering. Why? (Hint: See pages 522–523.)

(c) Nonetheless, carry out the chi-square test. What do you conclude?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Business Statistics Questions!

Module 6 Instructions Follow the instructions for Problem Set 1 and Problem Set 2 . Use SPSS to complete steps 1, 2, and 3, then use your SPSS Output and Graphs to complete step 4. Paste the required...

CHAPTER 14 The Massive Waterborne Outbreak ofCryptosporidium Infections, Milwaukee, Wisconsin, 1993 Jeffrey P. Davis, MD Wisconsin, 1993 INTRODUCTION: APRIL 5, 1993 On Monday morning, April 5, Dr....

[Constitution for the United States of America] [1] We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common...

\fThis is an electronic version of the print textbook. Due to electronic rights restrictions, some third party content may be suppressed. Editorial review has deemed that any suppressed content does...

Question 4: Expected Value Assume No Punitive Award Review of Expected Value: Weighted Average of a Set of Values Where the Weights are the Probabilities of Values Sum of Probabilities is...

Case study: Remedy Physiotherapy. I need help in drafting a marketing plan Names of people and businesses are disguised. Some aspects of the local area and the physiotherapy industry are simplified...

I could not link the case since they are protected so I copied the entire case study in pictures. I have included the links just in case...

If You Need Love, Get a Puppy: A Case Study on Professional Skepticism and Auditor Independence The Case Life is good , thought Will Stallard as he got into his truck that October morning. He could...

Discuss the four principles that are used to measure and record business transactions.

Explain how a paralegal can assist an attorney with preparing for an oral argument.

4 out of 1 4 Revien Later When conducting an annual credi review, which components of the financial stabement review ave typically looked at ? Select all that apply. Internal management indysis...

The house key lengths of 15 statistics students are measured and rounded to the nearest centimeter, and all 15 values are the same, so the standard deviation is 0 cm. Decide whether the statement...

Numerous studies have shown that a high fat diet can have a negative effect on a child's health. A new study suggests that a high fat diet early in life might also have a significant effect on memory...

Exercise 4.29 introduces a historical scenario in which a British woman, Muriel Bristol-Roach, claimed to be able to tell whether milk had been poured into a cup before or after the tea. An...

Exercise 4.71 discusses a study comparing average brain size between three groups of subjects. In this exercise, we test for evidence that average brain size is larger in football players who have...

Prepare a prospectus to the Civic Committee on approaches / actions they could take to raise the projected $ 5 0 Million through an art exhibit show

Rogot Instruments makes fine violins and cellos. It has $1.8 million in debt outstanding, equity valued at $2.6 million, and pays corporate income tax at rate 37%. Its cost of equity is14% and its...

A). Critically analyse the types of leases and discuss the various steps required in the calculation of leases give appropriate examples. 5 pages