A customer is comparing the costs of two cell phone plans. In Plan A, he will pay $0.15 per call and there is no monthly fee. In
2 answers:
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Answer:
There is no significant difference between the two averages at 5% level
Step-by-step explanation:
Given that a a college student is interested in testing whether business majors or liberal arts majors are better at trivia.
The student gives a trivia quiz to a random sample of 30 business school majors and finds the sample’s average test score is 86. He gives the same quiz to 30 randomly selected liberal arts majors and finds the sample’s average quiz score is 89
Thus he has done a hypothesis testing for comparison of two means of different subjects. n =30
Since which is better is not claimed we use two tailed test here
We find that p value our alpha
Since p >alpha, we find that there is no significant difference between the averages of these two groups and null hypothesis is accepted
Answer:
She need to walk 31/75 miles to school.
Step-by-step explanation:
It is given that,
Sofia has walk miles to school. She has already walk
of a mile.
We need to find how much farther does she need to walk.
Total distance =
Let she has to walk x distance to school.
Hence, she need to walk 31/75 miles to school.