Question
Asked Nov 14, 2019
1 views
random
sample
of 100
observations
is taken
from a
normal
population
with
a
standard
deviation
of 10
and
the
sample mean
is 40. What is the
value
of Lower
Confidence
Limit
at 95%
CI.
check_circle

Expert Answer

Step 1

It is given that the population standard deviation is 10 and the sample mean is 40. The level of confidence is 0.95.

Step 2

The 95% confidence interval is obtained as follows:

...
CI ta
10
= 40 ± 0.05
v100
10
: Using standard normal table
10
= 40 +1.96 x-
(38.04.41.96)
help_outline

Image Transcriptionclose

CI ta 10 = 40 ± 0.05 v100 10 : Using standard normal table 10 = 40 +1.96 x- (38.04.41.96)

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you bel...

A: Step-by-step procedure to obtain the value of z using MINITAB:Choose Graph > Probability Distribu...

question_answer

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognit...

A: Obtain the critical value at 95% confidence level:It is given that the confidence level is 0.95 and ...

question_answer

Q: Please show me how to do this equation

A: Solution: We are given that a machine has 9 identical components which functions independently.The p...

question_answer

Q: Warranty records show that the probability that a new car needs a warranty repair in the first 90 da...

A: From the given key points,Probability for warranty repair (probability of “success”, P) =0.05Number ...

question_answer

Q: Use the p-value method and fill in the blanks to address the claim: A poll of 1085 adult Americans r...

A: Given:Number of adult Americans = n = 1085

question_answer

Q: A CBS News poll involved a nationwide random sample of 651 adults, asked those adults about their pa...

A:  (a)The value of P(affiliated with neither party) is,

question_answer

Q: According to the analysis of Federal Reserve statistics and other government data, American househol...

A: Given information:Variance is unknown. So, we should be use t-distribution.Sample size (n) = 500Samp...

question_answer

Q: Statistics Question

A: Given:Confidence level = 96%                            = 0.96

question_answer

Q: Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past se...

A: It is given that women athletes have a long term graduation rate is 67% and the level of significanc...