New Year Sale 2026! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

ASQ CQE Exam - Topic 7 Question 83 Discussion

Actual exam question for ASQ's CQE exam
Question #: 83
Topic #: 7
[All CQE Questions]

If a sample size of 16 yields an average of 12 and standard deviation of 3, estimate the 95% confidence interval for the population (assume a normal distribution).

Show Suggested Answer Hide Answer
Suggested Answer: A

by Celeste at Mar 17, 2024, 06:00 AM

Limited Time Offer

25%

Off

Get Premium CQE Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Cheryll
3 months ago
Totally agree, that sounds right!
upvoted 0 times
...
Adrianna
3 months ago
Wait, how do you even calculate that?
upvoted 0 times
...
Marion
3 months ago
I think that's a bit off, isn't it?
upvoted 0 times
...
Malinda
4 months ago
95% CI should be around 9.5 to 14.5.
upvoted 0 times
...
Larae
4 months ago
The sample size is 16, mean is 12, SD is 3.
upvoted 0 times
...
Johnathon
4 months ago
I feel like we did a problem like this in class, and I think the confidence interval is around the mean plus and minus something, but I can't quite remember the details.
upvoted 0 times
...
Denise
4 months ago
The average is 12, and the standard deviation is 3, but I can't recall the exact steps to find the critical value for 95%.
upvoted 0 times
...
Estrella
4 months ago
I think we practiced a similar question where we calculated the margin of error. I hope I can remember how to apply that here.
upvoted 0 times
...
Elena
5 months ago
I remember we used the formula for the confidence interval, but I'm not sure if I should use the t-distribution or z-distribution since the sample size is small.
upvoted 0 times
...
Natalya
5 months ago
Wait, what's the t-value I'm supposed to use? I can't remember if it's the t-statistic or the z-score for a 95% CI with a normal distribution. This is tripping me up a bit.
upvoted 0 times
...
Haley
5 months ago
No problem, I've got this. I'll just plug the values into the formula: 95% CI = sample mean +/- (t-value * standard error). Easy peasy!
upvoted 0 times
...
Eloisa
5 months ago
Hmm, I'm a bit unsure about this one. I know we need to assume a normal distribution, but I'm not sure how to actually calculate the 95% CI from the given information.
upvoted 0 times
...
Cherelle
5 months ago
Okay, this looks like a standard confidence interval question. I'll need to use the sample size, mean, and standard deviation to calculate the 95% CI.
upvoted 0 times
...
Elke
5 months ago
Alright, I think I've got the steps down. First, calculate the standard error using the standard deviation and sample size. Then look up the t-value for 95% confidence with 15 degrees of freedom. Plug it all into the formula and boom, 95% CI.
upvoted 0 times
...
Kina
5 months ago
Hmm, I'm a little unsure between B and D. Managed care does focus on disability management, but I'm not sure if that's considered a "common characteristic" across all these plans. I'll have to think this through carefully.
upvoted 0 times
...
Kristofer
5 months ago
The third option about mitigating risks seems like the most relevant one. DLM is probably about understanding the risks to the data and planning how to protect it throughout its lifecycle.
upvoted 0 times
...
Ming
5 months ago
Okay, I've got this. APW extinguishers use water and air pressure to put out fires. They're not meant for certain types of fires, like electrical or grease. I'm pretty confident I can identify the true statements here.
upvoted 0 times
...
Charlesetta
5 months ago
Ah, I see what they're getting at now. The metric is focused on revenues and market share, so it's probably not going to be used to evaluate something like "Optimization of business process costs" or "Customer-oriented service culture." It's got to be the one about the portfolio of services.
upvoted 0 times
...
Marge
2 years ago
After calculating, we get the confidence interval as [10.35, 13.65].
upvoted 0 times
...
Lino
2 years ago
To estimate the 95% confidence interval, we use Z = 1.96 for 95% confidence level.
upvoted 0 times
...
Lauran
2 years ago
Since the sample size is 16 and standard deviation is 3, we can calculate the standard error.
upvoted 0 times
...
Wynell
2 years ago
The formula for confidence interval is sample mean ± (Z * standard error).
upvoted 0 times
...
Janessa
2 years ago
I agree, let's use the formula for estimating the confidence interval.
upvoted 0 times
...
Britt
2 years ago
I think we need to calculate the confidence interval for this question.
upvoted 0 times
...
Mitsue
2 years ago
Therefore, the 95% confidence interval is 12 ± 1.5975, giving us a range of 10.4025 to 13.5975.
upvoted 0 times
...
Leila
2 years ago
And the margin of error would be 2.13 * 3 / sqrt(16), which is 1.5975.
upvoted 0 times
...
Francoise
2 years ago
So, for a 95% confidence interval, the critical value is 2.13.
upvoted 0 times
...
Stephen
2 years ago
I agree. The margin of error is equal to the critical value times the standard deviation divided by the square root of the sample size.
upvoted 0 times
...
Francoise
2 years ago
I think we need to calculate the margin of error first.
upvoted 0 times
...

Save Cancel