Question
In: Statistics and Probability
Questions 28-29: You have collected data on heights, in inches, from 41 males and 52 females....
Questions 28-29: You have collected data on heights, in inches, from 41 males and 52 females. The sample standard deviations for males and females are, respectively, 6.1 and 4.9.
28. Find the appropriate test statistic to test equality of
variances between the genders.: *
(A) 0.2541
(B) 1.2449
(C) 1.5498
(D) 7.5939
29. On what distribution would you obtain the p-value?: *
(A) The F distribution with degrees of freedom 41 and 52.
(B) The T distribution with degrees of freedom 91.
(C) The T distribution with degrees of freedom 40.
(D) The chi-square distribution with degrees of freedom 1.
(E) The F distribution with degrees of freedom 40 and 51.
30. You conduct a two-tailed hypothesis test, which turns out to
be significant at α = 0.03. A corresponding confidence interval for
the same test would have what confidence?: *
(A) 3%
(B) 95%
(C) 97%
(D) 97.5%
Solutions
orchestra answered 1 year agoRelated Solutions
For this assignment, use data from W1 Assignment. Compute a t-test comparing males' and females' heights....
For this assignment,
use data from W1 Assignment.
Compute a
t-test comparing males' and females' heights. You must
determine which type of t-test to compute.
Move your output into
a Microsoft Word document and write a one-paragraph, APA-formatted
interpretation of the results.
Participant
ID Age Sex Height
Year in college
1 18 f 60
freshman
2 17 f 61
freshman
3 18 f 62
freshman
4 18 f 63
freshman
5 23 f 66
freshman
6 25 m 65
freshman ...
For Questions 1-4 , use the table below. It is data for the heights (inches) for...
For Questions 1-4 , use the table below. It is
data for the heights (inches) for Ms. Smith’s 4th grade
class.
Student
Height (inches)
Student
Height (inches)
1
47
11
53
2
47
12
54
3
47
13
55
4
49
14
56
5
50
15
59
6
51
16
59
7
51
17
60
8
52
18
60
9
52
19
60
10
52
20
91
The median height of the students is
42.32
52.50
54.45
58.35
The standard...
A statistics class collected data about male and female heights. The sample of 143 females had...
A statistics class collected data about male and female heights.
The sample of 143 females had a mean height of 64 inches with a
standard deviation of 2.84 inches. Assuming that the standard
deviation of all such female heights is 2.60 inches, use a 0.05
significance level to test the claim that women’s heights have a
mean different from 63.8 inches.
We are testing the claim about a (mean, proportion, standard
deviation): ______________________
Which test will you use (proportion, z-test,...
Who are better drivers’ males or females? Here are some relevant statistics from the data in...
Who are better drivers’ males or females?
Here are some relevant statistics from the data in 2015:
Drivers
Total Involved Drivers
Drivers in Fatal Collisions
Drivers in Serious Injury Collisions
Drivers in Minor Injury Collisions
Drivers in Property Damage Only Collisions
Drivers in Unknown Injury Collisions
Males
114,297
541
1,751
35,374
75,742
889
Females
81,924
226
790
27,901
52,425
582
Total
196,221
767
2,541
63,275
128,167
1,471
a) Exploratory Data Analysis
Presence of data analysis and graphs
Discussion of results...
You have collected data for 104 countries to address the difficult questions of the determinants for...
You have collected data for 104 countries to address the
difficult questions of the determinants for differences in the
standard of living among the countries of the world. Your model has
the relative personal income (RelPersInc) determined by
the saving rate (SK) and population growth rate
(n). To test the predictions of this growth model, you run
the following regression:
= 0.339 – 12.894 × n + 1.397 × SK,
R2=0.621
(0.068) (3.177) (0.229)
Numbers in parentheses are the...
On average, do males start smoking at an earlier grade than females? Data from 94 12th...
On average, do males start smoking at an earlier grade than
females? Data from 94 12th grade boys that smoke and 108 12th grade
females that smoke found that the mean grade of first use of
cigarettes was 9.87 for boys (standard deviation of 1.75), and
10.17 for girls (standard deviation of 1.69).
a) Is this sufficient evidence at alpha =.05 that the mean grade
for first-time cigarette use is lower for boys than for girls? (10
points)
b) Calculate...
Given: Assume you have collected data from 150 subjects, and that the distribution of the data...
Given: Assume you have collected data from 150 subjects, and
that the distribution of the data is a "normal" distribution. The
mean of the scores is 37, with a standard deviation of 4.5. Using
the given information, calculate the 68% confidence interval. A
confidence interval represents a range of values, the lowest value
is references as the "lower bound", the highest value is referenced
as the "upper bound". Determine the lower and upper bounds for the
68% confidence interval. Round...
Use the heights from the SCC data to answer the following questions. Men are to use...
Use the heights from the SCC data to answer the following
questions. Men are to use the male data, and women are to use the
female data (only answer the questions for ONE set of data, not
both). 2. State the following for the SCC sample female/male
heights. a. Sample size (n) b. Sample mean (?̅) c. Sample standard
deviation (s) 3. Use the sample to make a point estimate of the
mean height of the entire female/male SCC student...
Use the heights from the SCC data to answer the following questions. Men are to use...
Use the heights from the SCC data to answer the following
questions. Men are to use the male data, and women are to use the
female data (only answer the questions for ONE set of data, not
both).
2. State the following for the SCC sample male heights.
a. Sample size (n)
b. Sample mean (?̅)
c. Sample standard deviation (s
male Student # Gender Height Shoe Age Hand
1 M 67 10 19 R
2 M 74 12 17...
Let's say you have collected data from a large sample of participants on some variable that...
Let's say you have collected data from a large sample of
participants on some variable that you think is normally
distributed. In this case use IQ scores. Describe the variable and
state whether the scale of measurement is nominal, ordinal,
interval, or ratio, and why you came to that conclusion. What does
it mean to say the variable is normally distributed? What is
probability value and explain how a probability value of .05 in
your example is related to the...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- In 1941, President Roosevelt spoke about the “four freedoms.” For many in the country, however, these...
- Your friend is looking for investors in a risky business venture. To convince you to participate,...
- Suppose you observe the following situation: State of Economy Probability of State Return if State Occurs...
- Merger Analysis TransWorld Communications Inc., a large telecommunications company, is evaluating the possible acquisition of Georgia...
- Journal Entries and Trial Balance Elite Realty acts as an agent in buying, selling, renting, and...
- In racket Assume that the elements of a list are indexed starting with 1. Write a...
- Describe System Development Life Cycle (SDLC) and how it is used.
ADVERTISEMENT