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.
B.
Homework Answers
As per HOMEWORKLIB RULES, we are required to answer the first individual question only. please re-post rest of the questions. We are bound by rules. Sorry
Ans 1: The level of significance (
)
is also known as the probability of type 1 error. The type 1 error
is rejecting a null hypothesis when it is true.
Whereas type 2 error is accepting a null hypothesis when it is false.
The correct option is (A)
Add Answer to:
1) The _____ refers to the probability of a _____.
A. Level of significance, type I...
a) A significance level of = 0.01 is used in testing a researcher's claim that μ...
a) A significance level of = 0.01 is used in testing a researcher's claim that μ > 100 and the sample data give a test statistic of z = 2.03. Determine the rejection region for this test, and then state the decision for such a test. b) A significance level of = 0.05 is used in testing a researcher's claim that μ 100 and the sample data give a test statistic of z = -1.85. Determine the rejection region for...
You are __________ to commit a Type I error using the 0.05 level of significance than...
You are __________ to commit a Type I error using the 0.05 level of significance than using the 0.01 level of significance. a. twice as likely b. less likely c. equally likely d. more likely
The target diameter of bolts from a production line is 8mm. Historically the bolt diameters are...
The target diameter of bolts from a production line is 8mm.
Historically the bolt diameters are normally distributed with a
standard deviation of 0.05mm. To monitor this process periodically
an engineer takes a random sample of 4 measurements. Let µ be the
true average bolt diameter.
The rejection region is:
Find the minimum value of c that yields a test
with significance 0.05?
zα
1.282
1.645
1.960
2.326
2.576
3.090
α(tail area)
0.1
0.05
0.025
0.01
0.005
0.001
%ile...
For a two-sided test where the level of significance (probability of a type 1 error) =...
For a two-sided test where the level of significance (probability of a type 1 error) = 0.05, we reject the null hypothesis when . . . .
1. In hypothesis testing, the hypothesis that is assumed to be true for the purpose of...
1. In hypothesis testing, the hypothesis that is assumed to be true for the purpose of testing is called the hypothesis 2. (Circle the correct response) In hypothesis testing, critical values used to make a rejection decision regarding the null hypothesis are determined by the nature of the hypothesis test (two-tail vs. one-tail) and the d. significance level a. sample size b. population parameter c. target value 3. (Circle the correct response) In the process of hypothesis testing, the test...
If the cost of making Type I error is large, do we want the significance level...
If the cost of making Type I error is large, do we want the significance level to be closer to 0.10 or 0.01? Very briefly explain
The target diameter of bolts from a production line is 12mm. Historically the bolt diameters are...
The target diameter of bolts from a production line is 12mm. Historically the bolt diameters are normally distributed with a standard deviation of 0.1mm. To monitor this process periodically an engineer takes a random sample of 5 measurements. Let µ be the true average bolt diameter. The rejection region is: Find the minimum value of c that yields a test with significance 0.01? zα 1.282 1.645 1.960 2.326 2.576 3.090 α(tail area) 0.1 0.05 0.025 0.01 0.005 0.001 %ile 90...
Question 3: Evaluate this model with the global test at the significance level a 0.05. (6...
Question 3: Evaluate this model with the global test at the significance level a 0.05. (6 points) Step 1: State the hypotheses H1: Step 2: Compute the global F-statistic for the model. (Round to the nearest 100) Step 3: Find F-value for the critical value. (Round to the nearest 100) Step 4: State decision rule Step 5: State a conclusion and interpret the conclusion. Table 2 presents the parameter estimates of the regression model. Conduct a test of Question 4:...
If you use a 0.10 level of significance in a (two-tail) hypothesis test, the decision rule...
If you use a 0.10 level of significance in a (two-tail) hypothesis test, the decision rule for rejecting Ha 14.4. If you use the Z test, is shown below. Wor Reject H, if ZSTAT - 1.645 or ZSTAY> +1.645. What is your decision if ZSTAT= +1.96? min Choose the correct answer below. Plai O A. Since ZSTA falls into the rejection region, do not reject Ho. 20 O B. Since ZSTAT falls into the nonrejection region, reject Ho Crunc oC....
please show your work...................... 14. a. Probability of making a Type I error b. Probability of...
please show your work......................
14. a. Probability of making a Type I error b. Probability of making a Type Il error c. Probability of rejecting Ho when you are supposed to d. Probability of not rejecting Ho when you shouldn't. Which of the following probabilities is equal to the significance level a? 15. If we reject the null hypothesis when it is false, then we have committed a. a Type ll error b. a Type l error both a Type...
The target diameter of bolts from a production line is 8mm.
Historically the bolt diameters are normally distributed with a
standard deviation of 0.05mm. To monitor this process periodically
an engineer takes a random sample of 4 measurements. Let µ be the
true average bolt diameter.
The rejection region is:
Find the minimum value of c that yields a test
with significance 0.05?
zα
1.282
1.645
1.960
2.326
2.576
3.090
α(tail area)
0.1
0.05
0.025
0.01
0.005
0.001
%ile...
1. In hypothesis testing, the hypothesis that is assumed to be true for the purpose of testing is called the hypothesis 2. (Circle the correct response) In hypothesis testing, critical values used to make a rejection decision regarding the null hypothesis are determined by the nature of the hypothesis test (two-tail vs. one-tail) and the d. significance level a. sample size b. population parameter c. target value 3. (Circle the correct response) In the process of hypothesis testing, the test...
Question 3: Evaluate this model with the global test at the significance level a 0.05. (6 points) Step 1: State the hypotheses H1: Step 2: Compute the global F-statistic for the model. (Round to the nearest 100) Step 3: Find F-value for the critical value. (Round to the nearest 100) Step 4: State decision rule Step 5: State a conclusion and interpret the conclusion. Table 2 presents the parameter estimates of the regression model. Conduct a test of Question 4:...
If you use a 0.10 level of significance in a (two-tail) hypothesis test, the decision rule for rejecting Ha 14.4. If you use the Z test, is shown below. Wor Reject H, if ZSTAT - 1.645 or ZSTAY> +1.645. What is your decision if ZSTAT= +1.96? min Choose the correct answer below. Plai O A. Since ZSTA falls into the rejection region, do not reject Ho. 20 O B. Since ZSTAT falls into the nonrejection region, reject Ho Crunc oC....
please show your work......................
14. a. Probability of making a Type I error b. Probability of making a Type Il error c. Probability of rejecting Ho when you are supposed to d. Probability of not rejecting Ho when you shouldn't. Which of the following probabilities is equal to the significance level a? 15. If we reject the null hypothesis when it is false, then we have committed a. a Type ll error b. a Type l error both a Type...
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