Question
In: Statistics and Probability
: Dr. Smith was interested in examining if a new language training program would produce a...
: Dr. Smith was interested in examining if a new language training program would produce a change in the reading scores for the individuals in the population. In general population of college students, scores on a standardized reading test that are normally distributed with the mean µ = 65 and standard deviation σ = 15. Because it was not feasible to administer the training to everyone in the population, a sample of n = 64 individuals was selected, and the training program was given to this sample. Following the training, the average score for this sample was ?̅ = 69. Can the researcher conclude that the new program would have an effect on reading scores among college students? Round up to two decimal places. Use a two-tailed test and α = .01.
Q1: State your null hypothesis and research hypothesis in complete sentences.
Q2: what are the cut-off points?
Q3: What is the standard error?
Q4: What is the z-score?
Q5: Write your conclusion thoroughly.
Solutions
orchestra answered 1 year agoRelated Solutions
Dr. Smith is examining the development of moral reasoning in children. Seven children (11-years old) are...
Dr. Smith is examining the development
of moral reasoning in children. Seven children (11-years old) are
assessed three times over the year. The children are given moral
reasoning scenarios. Higher scores indicate higher levels of moral
reasoning.
Time 1
Time 2
Time 3
5
6
10
4
7
9
8
8
9
7
9
7
6
5
10
3
5
7
2
2
4
a.
State the null hypothesis.
b.
Identify the appropriate statistical test
c.
Calculate the appropriate test...
Dr. Smith is examining the development of moral reasoning in children. Seven children (11-years old) are...
Dr. Smith is examining the development of moral
reasoning in children. Seven children (11-years old) are assessed
three times over the year. The children are given moral reasoning
scenarios. Higher scores indicate higher levels of moral
reasoning.
Time 1
Time 2
Time 3
5
6
10
4
7
9
8
8
9
7
9
7
6
5
10
3
5
7
2
2
4
a. State the null hypothesis.
b. Identify the appropriate statistical test
c. Calculate the appropriate test...
You are interested in developing a software program targeted at learning a new foreign language. You...
You are interested in developing a software program targeted at
learning a new foreign language. You believe that your new program
will allow for faster language learning in adults. Typically, it
takes people an average of 5 years (σ = 0.76) to learn a second
language. In your sample of 30 adults, this same level of
proficiency is achieved in 2.8 years (S = 0.78). (Assume the
standard α = 0.05.)
Population 1 (1):
Population 2 (1):
Create a graphical...
Dr. Kovaleski is interested in examining whether quantity ofsleep impacts problem solving ability. To test...
Dr. Kovaleski is interested in examining whether quantity of
sleep impacts problem solving ability. To test problem solving
ability, the research team gave participants a puzzle and measured
how long it took participants to solve the puzzle in minutes. A
group of participants were instructed to sleep 5 hours and then
solve the puzzle in the morning. Then the same participants were
instructed to sleep 7 hours and then solve a different puzzle in
the morning. Then, participants were asked...
Dr. Kovaleski is interested in examining whether quantity of sleep impacts problem solving ability. To test...
Dr. Kovaleski is interested in
examining whether quantity of sleep impacts problem solving
ability. To test problem solving ability, the research team gave
participants a puzzle and measured how long it took participants to
solve the puzzle in minutes. A group of participants were
instructed to sleep 5 hours and then solve the puzzle in the
morning. Then the same participants were instructed to sleep 7
hours and then solve a different puzzle in the morning. Then,
participants were asked...
Dr. Kovaleski is interested in examining whether quantity of sleep impacts problem solving ability. To test...
Dr. Kovaleski is interested in examining whether quantity of
sleep impacts problem solving ability. To test problem solving
ability, the research team gave participants a puzzle and measured
how long it took participants to solve the puzzle in minutes. A
group of participants were instructed to sleep 5 hours and then
solve the puzzle in the morning. Then the same participants were
instructed to sleep 7 hours and then solve a different puzzle in
the morning. Then, participants were asked...
You (Dr. Gore) are a researcher examining the effects of a new teaching approach on student...
You (Dr. Gore) are a researcher
examining the effects of a new teaching approach
on student learning of mathematics
concepts. The data below reflect the scores on a math
concept exam. The data represent the
number correct before the teaching approach was
used (Column A) and after the teaching
approach was used (Column B) for the same
subjects. Conduct a dependent samples
t-test on the data and decide whether you can
reject the null hypothesis that the
approach had no...
You (Dr. Gore) are a researcher examining the effects of a new teaching approach on student...
You (Dr. Gore) are a researcher
examining the effects of a new teaching approach
on student learning of mathematics
concepts. The data below reflect the scores on a math
concept exam. The data represent the
number correct before the teaching approach was
used (Column A) and after the teaching
approach was used (Column B) for the same
subjects. Conduct a dependent samples
t-test on the data and decide whether you can
reject the null hypothesis that the
approach had no...
A new patient is seen by Dr. Smith and she completed a detailed history and examination...
A new patient is seen by Dr. Smith and she completed a detailed
history and examination with medical decision making of low
capacity. The correct E/M code is
A researcher is interested in determining whether the new design of the training simulator and a...
A researcher is interested in determining whether the new design
of the training simulator and a new behavior modification program
will affect a student’s learning behavior. Sixty-three (63)
students are randomly selected for inclusion in this research
project. The students are randomly divided into 9 groups of 7. The
group assignments are as follows:
Design A
Design B
Design C
No behavior modification
12
18
21
10
16
22
19
27
33
19
23
35
15
26
27
18
22...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- In java based on the classes provided finish the program per the requirements: ----------------------------------------------Class1 package cardgame;...
- Identify two cultures and analyze the nurturing process within each culture and discuss the impact the...
- Digital security is an increasing concern is the Internet age. In order to protect sensitive information...
- the challenges experienced by companies considering full application of customer retention strategy in the face of...
- Respond to the following in a minimum of 175 words: The flow of a program is...
- Write a version of the binary search algorithm that can be used to search a string...
- Using the following reduction potentials: I2(s) + 2e- <---> 2I-(aq) E0 = 0.535 V I2 (aq)...
ADVERTISEMENT