Question
The mean number of text messages sent per month by customers of a cell phone service provider is 1,350, and the standard deviation is 750.
The mean number of text messages sent per month by customers of a cell phone service provider is 1,350,
and the standard deviation is 750. Find the z-score associated with each of the following numbers of text
messages sent. (Round your answer for part (b) to three decimal places.)
(a) 0
(b) 11,000
(c) 4,500
(d) 300
Answers
What are best answers and total votes?
Guide On Rating System
✅
Best Answers -
Rating provided by student who posted the question
Total Votes -
Sum of votes provided by verified experts based on their
assessment of the answer. For example, total votes of 2
means 2 verified experts have approved the answer.
In most cases Best Answers have also the most Total Votes but when
this is not the case, kindly review the feedbacks from verified experts
and decide which answer to take.
✅
Best Answer
No Votes
Vote
SignIn to Vote
Vote
Vote
Loading...
Koala Tutor
Koala Ai Support
Got a question with my answer?
To find the z-score, we use the formula:
z = (x - μ) / σ
where z is the z-score, x is the number of text messages, μ is the mean, and σ is the standard deviation.
(a) For 0 text messages:
z = (0 - 1350) / 750
z = -1.8
(b) For 11,000 text messages:
z = (11000 - 1350) / 750
z = 13.2
(c) For 4,500 text messages:
z = (4500 - 1350) / 750
z = 4.4
(d) For 300 text messages:
z = (300 - 1350) / 750
z = -1.2
Got a question with my answer?
Message Me
Cheapmath.com is completely free!
Asking question is free.
Getting answers is free.
+99
Asking question is free.
Getting answers is free.
+99
Related Questions
Premium Product Promotions, a market res
The total blood cholesterol level was me
Toss a coin 40 times and record the numb
As we are reminded in Isaiah 45:3 and 48
Identify a research question of interest
Provide one example each of a study wher
Under what conditions should you use the
Under what conditions should you use the
Provide an example in which you should u
Provide two examples, one in which you s