Question
In: Statistics and Probability
1. True or False: Confidence intervals can only be calculated for means. True False SAVE 2....
1. True or False: Confidence intervals can only be calculated
for means.
True
False
SAVE
2. Suppose a sample of 200 barrow-wights (wraith-like
creatures that feed on the life force of the living) yields a
sample mean of 6.2 living beings consumed per day. Assuming a
standard error of 1.7, what would the upper bound of a 95%
confidence interval be?
SAVE
3. Using the same ridiculous survey data from the previous
question, what would the lower bound of a 95% confidence interval
be?
SAVE
4. Finally, if you were to calculate a 99% confidence interval
for the true mean number of living beings consumed by barrow-wights
per day, would the width of the interval (i.e., the distance
between the upper and lower bound) end up being greater or less
than the width of the interval you calculated in Questions 3 and
4?
Solutions
Expert Solution
(1)
Correct option:
False
(2)
= 6.2
= 0.05
From Table, critical values of Z = 
1.96
SE = 1.7
Upper bound = + Z SE
= 6.2 + (1.96 X 1.7)
= 6.2 + 3.332
= 9.532
So,
Answer is:
9.532
(3)
(2)
= 6.2
= 0.05
From Table, critical values of Z = 1.96
SE = 1.7
Lower bound = - Z SE
= 6.2 - (1.96 X 1.7)
= 6.2 - 3.332
= 2.868
So,
Answer is:
2.868
(4)
greater
EXPLANATION:
If you were to calculate a 99% confidence interval for the true mean number of living beings consumed by barrow - wights per day, the width of the interval (i.e., the distance between the upper and lower bound) end up being greater than the width of the interval you calculate in Question 3 and 4.
orchestra answered 2 years agoRelated Solutions
1. True or False: Confidence intervals can only be calculated for means
1.
True or False: Confidence intervals can only be calculated for
means
True or False 1. A 95% confidence interval of {-.5, 3.5} means that, on 95% of...
True or False
1. A 95% confidence interval of {-.5, 3.5} means that, on 95% of
repeated experiments, the sample mean will be between -.5 and
3.5.
2. The probability of making a type-I error depends, in part, on
power.
3. In general,
4. According to the central limit theorem, the sample mean, , is
always normally distributed, even when population distribution of
x is not normal
Open your Unit 5 assignment and identify the means and confidence intervals you calculated for male-at-rest...
Open your Unit 5 assignment and identify the means and
confidence intervals you calculated for male-at-rest and
female-at-rest.
Use the 95% confidence intervals to determine if the resting
male heart is the same as the resting female heart.
Write the null hypothesis being tested and whether you reject
the null hypothesis based on the comparison of confidence
intervals.
Heart rate before and after exercise
M=0 F=1 Resting After Exercise
0 85.9 87.5
0 67.7 79.4
0 ...
Why are sample and population confidence intervals calculated differently?
Why are sample and population confidence intervals calculated
differently?
Confidence Intervals – Means & Proportions 1. You would like to estimate the starting salaries...
Confidence Intervals – Means & Proportions
1. You would like to estimate the starting salaries
of recently graduated business majors (B.S. in any business
degree). You randomly select 60 recently graduated business majors
and get a sample mean of $43,800 and the population standard
deviation is known to be $8,198
A. Construct a 90% confidence interval to estimate
the average starting salary of a recently graduated business major
(Round to the nearest penny and state the answer as...
1. Variables can only be numbers. True or False 2. American Airlines reduced its round trip...
1. Variables can only be numbers.
True or False
2. American Airlines reduced its round trip fare from Boston to
New York by $45. The sale price was $139. What was the original
price?
Original price:
3. Joy Lindman, who works for GE, receives an annual salary of
$85,000. Today she was informed by her boss that she will be
receiving a $3,000 raise. What percent of her old salary is the
$3,000 raise? (Round to nearest hundredth percent.)
Raise...
1) Only 1% of the filtrate leaves the body as urine. True or False 2) Perineal...
1) Only 1% of the filtrate leaves the body as urine. True or
False
2) Perineal structures in the female reproductive system include
the [a] and the [b]
3) The ---------- is the main processor of drugs in the
body.
answer all three questions please. just the right answers only.
thanks
Question 1 Accuracy means presenting data that is based on theory. True False Question 2 A...
Question 1
Accuracy means presenting data that is based on theory.
True
False
Question 2
A celebrity spokesperson is never a good idea.
True
False
Question 3
A creative brief should help identify what’s in it for
me prior to message development.
True
False
Question 4
A call to action is a necessary component of a health
communication message.
True
False
Question 5
Fidelity monitoring is a part of the design phase of
evaluation.
True
False
1. TRUE OR FALSE Increasing global market competitiveness can spread chronic diseases. 2. TRUE OR FALSE...
1. TRUE OR FALSE Increasing global market competitiveness can
spread chronic diseases.
2. TRUE OR FALSE Globally, infectious diseases are expected to
rise while chronic diseases are expected to decrease in the
future.
3. Chronic diseases, such as heart diseases, strokes, cancers
result in the following conditions except;
A. reduced quality of life
B. burdened caregivers
C. reduced health care cost
D. shorter life span
4. TRUE OR FALSE: The top risk factor for mortality, globally in
2017 was poor...
next to each statement it is true or false The 1.-An enzyme can only function once,...
next to each statement it is true or false
The 1.-An enzyme can only function once, because it is changed
by the chemical reaction. [ Select ]
2.- An enzyme's function depends on its three-dimensional shape.
[ Select ]
3.- Each enzyme can work with a broad range of substrates. [
Select ]
4. An enzyme inhibitor can prevent a substrate from binding to
the active site. [ Select ]
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- 1) Alternative compiled code sequence using instructions in classes A, B, C. What is the average...
- An asset is purchased on January 1 for $48,700. It is expected to have a useful...
- Do we have any online or offline tool to convert c and cpp programs into MIPS...
- -what is the pH of HCl 0,1M and NaCl 0,1M mixed together solution? -What is the...
- function X=extractDWT(x_train,startS,endS,wStep,wRange) % x_train = input signal % startS = from second % endS = end...
- Do you agree that Social Loafing is similar to Theory X. Give an example to support...
- Computing Cost of Goods Sold and Ending Inventory. Bartov Corporation reports the following beginning inventory and...
ADVERTISEMENT