Answered

Westonci.ca offers fast, accurate answers to your questions. Join our community and get the insights you need now. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

Eira works for a consumer advocacy firm. She would like to determine whether there is a difference in the battery life of two different brands of batteries, each of which sells thousands of batteries per year. She obtains separate random samples of 121212 batteries from one brand and 202020 batteries from the other, then tests the amount of time each battery lasts. There are outliers in her data. Eira plans to use this information to perform a ttt test to determine whether there is a difference in the average battery life of the two brands. Which conditions for performing this type of test did Eira's samples meet

Sagot :

Answer:

- Random condition

- Independence condition

Step-by-step explanation:

We are told that she selects random samples of 12 batteries from one brand and random samples of 20 batteries from another brand before testing each of them.

In carrying t-test, the sample is required to be random, independent, not have outliers, exhibit normality e.t.c

Now, it is clearly stated that she selected them randomly, thus random condition is met.

Also, another condition we can deduce from her test is that the samples are independent as they don't depend on one another since they are of 2 different brands.

Thus, she meets 2 conditions which are Random condition & independence condition

maxwellS23646

Answer:

Random sample, individual (A and D)

Step-by-step explanation:

I did the Khan Acadmy

Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.