In: Statistics and Probability
QUESTION 4
A group of potential customers were asked whether they preferred Coca-Cola products or Pepsi products. There gender was also noted on the form. The results are presented in the following table
| 
 Preference for Coke or Pepsi  | 
|||
| 
 Coke  | 
 Pepsi  | 
||
| 
 Gender  | 
Female | 
 121  | 
 92  | 
| Male | 
 134  | 
 85  | 
|
What is P(Female) (Round your answer to three decimal places)?
QUESTION 5
Using the table from the previous problem, what is the probability of preferring Pepsi given the respondent is a male? (Round your answer to three decimal places)
QUESTION 6
For a normally distributed population with a mean of 40 and a standard deviation of 5 find P(38 < X < 41). Give your answer rounded to 3 decimal places.
QUESTION 7
A random sample of 100 employees at a company shows that 62 are female. Form a 90% confidence interval for the proportion of all employees who are female. The interval is 0.62 what margin of error? Round your answer to 3 decimal places.