PLEASE SHOW WORK AND HOW YOU GOT TO THE ANSWER! Thank you! 71. A gasoline distri

Question

PLEASE SHOW WORK AND HOW YOU GOT TO THE ANSWER! Thank you!

71. A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased. The following is a contingency table from a random sample of 300 individuals Personal e of Gasoline Income Less than $50,000 $50,000 or More Regular 90 60 Premium 10 60 Extra Premium 20 60 The null hypothesis is a) "income" is independent of "type of gasoline" b) "income" influences "type of gasoline" c) "income" is not independent of "type of gasoline" d) "income" is related to "type of gasoline" e) "regular" is independent of "premium"

Explanation / Answer

Here we have two contingency variables: "Income" and "Type of Gasoline" so we have to test whether these two variables are independent or not. Hence,

The null hypothesis will be:

"Income" is independent of "Type of gasoline".

Option A is correct.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.