Question
In: Statistics and Probability
A nursing professor was curious as to whether the students in a very large class she...
A nursing professor was curious as to whether the students in a very large class
she was teaching who turned in their tests first scored differently from the overall
mean on the test. The overall mean score on the test was 75 with a standard
deviation of 10; the scores were approximately normally distributed. The mean
score for the first 20 tests was 78. Did the students turning in their tests first score
significantly
different from the mean?
Solutions
orchestra answered 1 year agoRelated Solutions
A professor was curious as to whether the students in a very large class she was...
A professor was curious as to whether the students in a very
large class she was teaching, who turned in their tests first,
scored differently from the class mean on the test. The μ on the
test was 75 with σ = 10; the scores were approximately normally
distributed. The mean score for the first 20 tests was 78. Did the
students turning in their tests first score significantly different
from the larger mean at the .05 level?
a) Use...
3. A nursing professor was curious as to whether the students in a very large class...
3. A nursing professor was curious as to whether the students in
a very large class she was teaching who turned in their tests first
scored differently from the overall mean on the test. The overall
mean score on the test was 75 with a standard deviation of 10; the
scores were approximately normally distributed. The mean score for
the first 20 tests was 78. Did the students turning in their tests
first score significantly different from the mean? Explain....
In a large class of introductory Statistics students, the professor has each person toss a coin...
In a large class of introductory Statistics students, the
professor has each person toss a coin 29 times and calculate the
proportion of his or her tosses that were heads. Complete parts a
through d below.
The Independence Assumption (is or is not) )_____satisfied
because the sample proportions (are or are not)_____independent of
each other since one sample proportion (can affect or does not
affect)______another sample proportion. TheSuccess/Failure
Condition is not satisfied because np=____ and nq=____which are
both (less than...
COIN TOSSES In a large class of introductory Statistics students, the professor has each student toss...
COIN
TOSSES In a large class of introductory Statistics
students, the professor has each student toss a coin 16 times and
calculate the proportion of his or her tosses that were heads. The
students then report their results, and the professor plots a
histogram of these several proportions.
What shape would you
expect this histogram to be? Why?
Where do you expect
the histogram to be centred?
How much variability
would you expect among these proportions?
Explain why a Normal...
A professor who teaches a large introductory statistics class (197 students) with eight discussion sections would...
A professor who teaches a large introductory statistics class
(197 students) with eight discussion sections would like to test if
student performance differs by discussion section, where each
discussion section has a different teaching assistant. The summary
table below shows the average score for each discussion section as
well as the standard deviation of scores and the number of students
in each section.
Sec 1
Sec 2
Sec 3
Sec 4
Sec 5
Sec 6
Sec 7
Sec 8
ni...
A researcher is curious if age makes a difference in whether or not students make use...
A researcher is curious if age makes a difference in whether or
not students make use of the gym at a university. He takes a random
sample of 30 days and counts the number of upperclassmen (Group 1)
and underclassmen (Group 2) that use the gym each day. The data are
below. The population standard deviation for underclassmen is known
to be 22.57 and the population standard deviation for upperclassmen
is known to be 13.57. Upper Classmen average = 202.4,...
A researcher is curious if age makes a difference in whether or not students make use...
A researcher is curious if age makes a difference in whether or
not students make use of the gym at a university. He takes a random
sample of 30 days and counts the number of upperclassmen (Group 1)
and underclassmen (Group 2) that use the gym each day. The data are
below. The population standard deviation for underclassmen is known
to be 22.57 and the population standard deviation for upperclassmen
is known to be 13.57.
Upper Classmen average = 202.4,...
This is all of the information the professor provided. It is very vague. She just wants...
This is all of the information the professor provided. It is
very vague. She just wants us to list examples of possible
variables then make aup a hypothesis to show that we have an
understanding of the terms.
Experiment 1 - Clorox Vs. Lysol
Questions:
Independent Variable:
Dependent variable:
Name two good control variables:
Positive Control Experiment:
Hypothesis:
Experiment 2 - Turtoring and Test Taking
Questions:
Independent Variable:
Dependent variable:
Name two good control variables:
Negative Control Experiment:
Hypothesis:
Experiment...
Suppose a professor gives an exam to a class of 40 students and the scores are...
Suppose a professor gives an exam to a class of 40
students and the scores are as follows. (Type the
data set in StatCrunch.)
35
44
46
47
47
48
49
51
53
54
55
55
57
57
57
58
59
59
59
59
60
60
60
60
60
62
62
62
64
68
69
70
72
73
73
75
75
77
82
88
Top 10% of scores receive an A
Bottom 10% of scores receive an F
Scores between...
An MPH professor claims that 50 % of the students in his class has a median...
An MPH professor claims that 50 % of the students in his class
has a median weight different from 140 lb. He collects the weight
of a random sample of 22 students. Enter the following data in SPSS
and perform a binomial test using the standard method. Alpha level
= 0.05 (Make sure to save your data before start analyzing the
data). 135 119 106 135 180 108 128 160 143 175 170 205 195 185 182
150 175 190...
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