Alison wants to find out how much time people spend reading books. She is going to use a questionnaire.

1 answer:

5 0

Well, for her questionnaire she could use and create questions or queries that are obviously related to her hypothesis or study. These could be done in a likert type of scale. 
1. I read most often.
 a. Strongly Agree b. Agree c. Disagree d. Strongly Disagree 

2. When I read my books its takes me 24 hours a day 
a. Strongly Agree b. Agree c. Disagree d. Strongly Disagree 

3. When I start reading I can’t stop 
a. Strongly Agree b. Agree c. Disagree d. Strongly Disagree

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A hair salon completed a survey of 367 customers about satisfaction with service(Dissatisfied, Neutral, Satisfied, or Very Satis

mamaluj [8]

The results of the survey are shown in the table.

It's required to calculate the following probabilities:

a) A customer is neutral

The row labeled as 'Neutral' has a total of 79 customers out of 367 in total.

The required probability is:

$p=\frac{79}{367}$

b) A customer is a walk-in

The first column labeled as 'Walk-in' has a total of 106 customers out of 367. The required probability is

$p=\frac{106}{367}$

c) A customer is dissatisfied and a walk-in.

We have to cross the row Dissatisfied with the column Walk-in. The number of customers that have both categories is 22 out of 367.

The required probability is:

$p=\frac{22}{367}$

d) A customer is very satisfied given he saw a TV ad.

This is a conditional probability, where the total is 111 because is the given condition. The customers that have both characteristics are 33, thus the required probability is: