Answer:
a. A two-sample z-test for a difference in sample proportions
Step-by-step explanation:
We are told that there are two supermarkets in the research named X and Y.
That a random number of shoppers were selected in each supermarket.
Thus means we have two different sample proportion.. Since a different number of people were randomly selected from each supermarket and a different number of people purchased the product.
Thus, we will have 2 sample proportions one for supermarket X and the other for supermarket Y.
In addition, the position of the product was different in both supermarkets.
Thus, we can say that this is a 2 sample Z-test for difference in their sample proportion.
Answer:
(D) 0.20
Step-by-step explanation:
There are 5 questions in the quiz.
Each question has 4 options to pick from
The student guesses at random for each (and every) question.
Find the probability that the student has only 1 correct answer.
- Focusing less on the "4" options and more on the "5" questions in the quiz, the probability that the student has only 1 correct answer out of 5 is
1/5 = 0.20
average salary is equal to 37,500
maximum salary is 4500 +37,500 = 42,000
mnimum salary is 37,500 - 4500 = 33,000
the equation is |x − 37500| ≤ 4500 meaning the salaries range from $33,000 to $42,000
Answer:
there isnt enough info
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
