The sample of 81 students was selected with a mean score of 90, this illustrates an example of a right tailed one sample z test.
<h3>How to illustrate the sample?</h3>
From the information given, the teacher claims that the mean score of students in his class is greater than 82 with a standard deviation of 20. In this case, the right tailed one sample z test is used.
The z value will be:
= (90 - 82)/20/✓81
= 3.6
Since 3.6 > 1.645, the null hypothesis will be rejected as there's enough evidence to support the teacher's claim.
When an online medicine shop claims that the mean delivery time for medicines is less than 120 minutes with a standard deviation of 30 minutes, the left tailed one sample test is used.
The z value will be:
= (100 - 120)/(30/✓49)
= -4.66
The null hypothesis is rejected as there is enough evidence to support the claim of the medicine shop.
Learn more about sampling on:
brainly.com/question/17831271
#SPJ1
Communication-each have different meanings because when you use the proper paper lines it will help you when you are older and now also it will help you in your drawing technique.(This question can help hope you will understand)
Answer: you can watch a video on how to solve this question on you tube
Answer:
#WeirdestQuestionOfAllTime
Explanation:
Answer:
is the masterful story of one extraordinary family at the hilarious height of the sexual revolution
Explanation:
if that is what your meaning
