Question
In: Statistics and Probability
1) The _____ refers to the probability of a _____. A. Level of significance, type I...
1) The _____ refers to the probability of a _____.
A. Level of significance, type I error
B. level of significance, type II error
2) Of the five steps for testing a hypothesis, _____ involves selecting a test statistic, with step 4, a _____ is formulated and with step 5, a _____ is made.
A.step 2, decision, decision
B. step 1, decision, decision
3) The most common alphas are _____, _____ and _____.
A. 0.01, 0.05, 0.10
B. 0.001, 0.002, 0.005
4) What percentage of the normal curve will contain half the total region of rejection in a two-tail test with a 0.05 level of significance?
A. 0.025
B. 0.01
5) The symbols for the mean and the standard deviation are.
A. α, μ
B. μ, σ
Solutions
orchestra answered 1 year agoRelated Solutions
• What is the level of significance? • What are Type I and Type II errors?...
• What is the level of significance? • What are Type I and Type
II errors? • Interpreting and determining p-values • What is the
relationship between sample size and power? • Understand the
difference between a p-value and a confidence interval—strengths
and weaknesses
For the following, Calculate the Probability and Type II errors. Assume an level of significance of...
For the following, Calculate the Probability and Type II
errors. Assume an level of significance of
α= 0.05 .
•Q1: For testing Ha: u < 62, true population standard
deviation= 15, sample size = 64, and we miraculously know that our
true population mean is really 60. What is the type II error?
Power? Also is our Power up to par (at least 0.8).
•Q2: For testing Ha: u >65, true population standard
deviation = 12, sample size = 36,...
(Choose Best Option) 1) The probability of a type I error increases when: a) Significance is...
(Choose Best Option)
1) The probability of a type I error increases when:
a) Significance is lowered b) The number of samples is lowered
c) Using two-tailed t-test rather than a one-tailed t-test d)
Multiple pair-wise comparisons are performed
2) A population has a mean weight of 70 kg with a standard
deviation of 5 kg. The weight of a sample of N = 100 subjects were
taken. The following statement is false:
a) 95% of the people in the...
(Choose Best Option) 1) The probability of a type I error increases when: a) Significance is...
(Choose Best Option)
1) The probability of a type I error increases when:
a) Significance is lowered
b) The number of samples is lowered
c) Using two-tailed t-test rather than a one-tailed
t-test
d) Multiple pair-wise comparisons are performed
2) A population has a mean weight of 70 kg with a standard
deviation of 5 kg. The weight of a sample of N = 100 subjects were
taken.
The following statement is false:
a) 95% of the people in the...
Increasing the significance level of a test increases the probability of a Type II error. aTrue...
Increasing the significance level of a test increases the
probability of a Type II error.
aTrue bFalse c Not sure
The larger the population variance, the higher the power of the
test.
a True b False c Not sure
The larger the sample size, the greater the power of the test
with everything else being equal.
a True b False c Not sure
Explain the relationship between Type I error and Type II error
in a hypothesis test.
The probability of committing a Type I error is: Group of answer choices the level of...
The probability of committing a Type I error is:
Group of answer choices
the level of significance
always less than the probability of a Type II error
1.00 minus the probability of committing a Type II error
equal to the standard error
usually equal to the level of measurement
1. How are Type 1 and Type 2 errors related to significance level ? 2. what...
1. How are Type 1 and Type 2 errors related to
significance level ?
2. what is z-critical value ? how is the z-critical
value used in hypothesis testing?
3. provide an example of how to report the results of
a z-test in correct APA style.
What is the level of significance of a test? the probability σ of rejecting H1 when...
What is the level of significance of a
test?
the probability σ of rejecting H1 when it is
true
the probability α of failing to reject H0
when it is true
the probability α of rejecting H1 when it is
true
the probability α of rejecting H0 when it is
true
the probability α of failing to reject H1
when it is true
What is the P-value?
the probability that the observed test statistic will take on
values less extreme...
1, I know that if the p-value is bigger than the significance level, we can reject...
1, I know that if the p-value is bigger than the significance
level, we can reject the null hypothesis, right?
2, What is the difference between p-value and t value?
1. I am trying to determine the level of measurement of my data type? I am...
1. I am trying to determine the level of measurement of my data
type?
I am looking for advice on Nominal, Ordinal, Interval, and
Ratio
2. Does the data set have any categorical variables?
I am trying to Describe the data set below in very general
terms?
This data consist of 8 variables: Which are
GRE Scores,
TOEFL Scores,
University Rating,
Statement of Purpose,
Letter of Recommendation Strength,
Undergraduate GPA, .
Research Experience, and
Chance of Admit.
Name
Type
Description...
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