CFA Institute Exam CFA-Level-I Topic 3 Question 14 Discussion

Actual exam question for CFA Institute's CFA-Level-I exam

Question #: 14
Topic #: 3

A sample of size 600 is drawn from a population. The sample mean equals 329. The total width of the 99% confidence interval for the population mean is 893. The estimated population variance equals ________.

A6.7

B4.9

C6.3

D7.3

Show Suggested Answer

Suggested Answer: D

by Cathern at Mar 19, 2025, 06:11 AM

Limited Time Offer

25%

Off

Get Premium CFA-Level-I Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Armando

3 months ago

I wonder if the population is as confused as I am right now. Time to channel my inner math genius!

upvoted 0 times

Florencia

2 months ago

That makes sense, thanks for the clarification!

upvoted 0 times

...

Colton

2 months ago

The estimated population variance is 1789.

upvoted 0 times

...

Rashad

2 months ago

I think we can use the formula for confidence interval to solve this.

upvoted 0 times

...

Francoise

3 months ago

This question is like a riddle wrapped in an enigma. Time to unleash my inner Sherlock Holmes!

upvoted 0 times

Antonio

1 months ago

Yes, that's correct! Great detective work!

upvoted 0 times

...

Aleisha

2 months ago

The estimated population variance is 1789. Can you confirm?

upvoted 0 times

...

Mira

2 months ago

Let's use the formula for confidence interval to solve this mystery.

upvoted 0 times

...

Denae

3 months ago

Wait, what's the formula for population variance again? *frantically flips through notes*

upvoted 0 times

...

Letha

3 months ago

Okay, let's see... Confidence interval, sample size, and sample mean. I got this!

upvoted 0 times

Eva

1 months ago

The estimated population variance is 1786. Makes sense now.

upvoted 0 times

...

Cassie

1 months ago

Sample size is 600, sample mean is 329, confidence interval width is 893. Estimated population variance is 1786.

upvoted 0 times

...

Tresa

2 months ago

So, the estimated population variance is 1786. Got it.

upvoted 0 times

...

Whitney

2 months ago

Sample mean equals 329, total width of 99% confidence interval is 893. Estimated population variance equals 1786.

upvoted 0 times

...

Tamesha

3 months ago

Hmm, this looks like a tricky one. Time to put on my thinking cap and crunch some numbers!

upvoted 0 times

...

Mona

3 months ago

Well, I used the formula for confidence interval width and got 1786, so I'm sticking with that.

upvoted 0 times

...

Xochitl

3 months ago

I disagree, I calculated it to be 4465.

upvoted 0 times

...

Mona

3 months ago

I think the estimated population variance is 1786.

upvoted 0 times

...