Homework Answers
Add Answer to:
b. Is it one tailed or two tailed? Why is it one tailed or two tailed?...
In one tailed T-test, if the test statistics is
Question 2In one tailed T-test, if the test statistics is \(\mathrm{t}\) and \(\mathrm{t}_{0}\) is the t-value under null hypothesis, then \(\mathrm{p}\) -value \(=\operatorname{Pr}\left(\mathrm{t}<\mathrm{t}_{0} \mid\right.\) null hypothesis is true) if \(\mathrm{t}_{0}>0\) and p-value \(=\operatorname{Pr}\left(t>t_{0} \mid\right.\) null hypothesis is true) if \(t_{0}<0\).Question 3In a recent twin study from researchers at King's College London, the researchers wanted to first test whether identical twins show statistically significantly different thigh muscular power. To test this, they recruited 20 identical female twins. For this analysis,one-way ANOVA...
1. What are null hypothesis and alternative hypothesis? 2. Inastatisticaltest,wehavethechoiceofatwo-tailedtest,aleft- tailed test, or a right-tailed test. Which hypothesis is the determining factor fo...
1. What are null hypothesis and alternative hypothesis? 2. Inastatisticaltest,wehavethechoiceofatwo-tailedtest,aleft- tailed test, or a right-tailed test. Which hypothesis is the determining factor for choosing the direction of the test? (In other words, how would you decide it) 3. Forthesamesampledataandnullhypothesis,howdoesthe P-value for a two-tailed test compare to that for a one-tailed test? 4. Using P-value method, how would you reject or fail to reject the null hypothesis? (what is the decision criteria?) How does level of significance matter to the hypothesis...
(a) For the same data and null hypothesis, is the P-value of a one-tailed test (right...
(a) For the same data and null hypothesis, is the P-value of a one-tailed test (right or left) larger or smaller than that of a two-tailed test? pick one The P-value for a one-tailed test is smaller because the two-tailed test includes the area in both tails. The P-value for a one-tailed test is larger because the two-tailed test includes the area in only one tail. The P-value for a one-tailed test is larger because the two-tailed test includes the...
To identify the correct Z(critical), it is important to determine whether the hypothesis test is one-tailed...
To identify the correct Z(critical), it is important to determine whether the hypothesis test is one-tailed or two-tailed. The decision between a one- and two-tailed hypothesis is based on the researcher's expectations about the population from which the sample was selected. Many people believe that millennials are having more sex than people during the sexual revolution. You wonder whether the cohort currently in their mid-20s have had more sexual partners than older generations. Assume that the the average number of...
please explain throughly It doesn’t need sample data. That’s how the question was intended to be. Il. A friends someone has. A tailed test friends so was done to test whether the amount of narcis...
please explain throughly
It
doesn’t need sample data. That’s how the question was intended to
be.
Il. A friends someone has. A tailed test friends so was done to test whether the amount of narcissism is a good predictor of number of sample of 10 participants was used. Assume an alpha level of.05 and a two- of 9. What statistical test should you use to evaluate the hypothesis above? 10. What are the null and alternative hypotheses in words? Null...
Question 8 3 pts The a two-tailed hypothesis test Is related to a confidence interval at the same level of alpha. All o...
Question 8 3 pts The a two-tailed hypothesis test Is related to a confidence interval at the same level of alpha. All of the answers are true. Is expressed in a probability framework with a chance of being wrong in our conclusion. Has an alternative hypothesis that uses Not Equal in the expression For this problem you will need a t-table. What is the t-value needed for the critical value for a one-tailed upper hypothesis test with a sample size...
Hypothesis Problems For the following hypothesis tests: a. State the null (Ho) and alternative (Hi) hypotheses b. State the type of test (right-tailed, left-tailed, or two-tailed) c. State the m...
Hypothesis Problems For the following hypothesis tests: a. State the null (Ho) and alternative (Hi) hypotheses b. State the type of test (right-tailed, left-tailed, or two-tailed) c. State the multiplier for an a (level of significance) of .05. The Chamber of Commerce states that only 15% of Boston tourists stay more than 2 days. A new chamber employee feels that the percentage staying more than 2 days is greater than 15%, and plans to sample a set of tourists to...
Before you took this course, you probably heard many stories about Statistics courses. Oftentimes parents of...
Before you took this course, you probably heard many stories about Statistics courses. Oftentimes parents of students have had bad experiences with Statistics courses and pass on their anxieties to their children. To test whether actually taking Statistics decreases students' anxieties about Statistics, a Statistics instructor gave a test to rate student anxiety at the beginning and end of his course. Anxiety levels were measured on a scale of 0-10. Here are the data for 16 randomly chosen students from...
Psy 248: STATISTICS- MARIA MIRANDA Computer Lab Assignment II, SP 2019 Comparing means using t-te...
Psy 248: STATISTICS- MARIA MIRANDA Computer Lab Assignment II, SP 2019 Comparing means using t-tests This assignment will give you practice choosing the appropriate test statistic to use for different research designs that all involve comparing using t-tests. You will need to enter the data, use SPSS to test hypothesis, and write a conclusion for each problem stating weather or not the samples differed significantly. To run all 3 tests, use: ANALYZE, COMPARE MEANS, and then select the type of...
Part A: Inferential Statistics Data Analysis, Plan and Computation Introduction: Variables Selected: Any two variables out...
Part A: Inferential Statistics Data Analysis, Plan and Computation Introduction: Variables Selected: Any two variables out of Income, Age, Food, Meat, Bakery, Fruits. Table 1: Quantitative Variables from the given Dataset spreadsheet Selected for Analysis Variable Name Description Variable 1: Variable 2: Data Analysis: 1. Confidence Interval Analysis: For one quantitative variable, select and run the appropriate method for estimating a parameter, based on a statistic (i.e., confidence interval method) and complete the following Table 2. Table 2: Confidence Interval...
Question 2In one tailed T-test, if the test statistics is \(\mathrm{t}\) and \(\mathrm{t}_{0}\) is the t-value under null hypothesis, then \(\mathrm{p}\) -value \(=\operatorname{Pr}\left(\mathrm{t}<\mathrm{t}_{0} \mid\right.\) null hypothesis is true) if \(\mathrm{t}_{0}>0\) and p-value \(=\operatorname{Pr}\left(t>t_{0} \mid\right.\) null hypothesis is true) if \(t_{0}<0\).Question 3In a recent twin study from researchers at King's College London, the researchers wanted to first test whether identical twins show statistically significantly different thigh muscular power. To test this, they recruited 20 identical female twins. For this analysis,one-way ANOVA...
please explain throughly
It
doesn’t need sample data. That’s how the question was intended to
be.
Il. A friends someone has. A tailed test friends so was done to test whether the amount of narcissism is a good predictor of number of sample of 10 participants was used. Assume an alpha level of.05 and a two- of 9. What statistical test should you use to evaluate the hypothesis above? 10. What are the null and alternative hypotheses in words? Null...
Question 8 3 pts The a two-tailed hypothesis test Is related to a confidence interval at the same level of alpha. All of the answers are true. Is expressed in a probability framework with a chance of being wrong in our conclusion. Has an alternative hypothesis that uses Not Equal in the expression For this problem you will need a t-table. What is the t-value needed for the critical value for a one-tailed upper hypothesis test with a sample size...
Hypothesis Problems For the following hypothesis tests: a. State the null (Ho) and alternative (Hi) hypotheses b. State the type of test (right-tailed, left-tailed, or two-tailed) c. State the multiplier for an a (level of significance) of .05. The Chamber of Commerce states that only 15% of Boston tourists stay more than 2 days. A new chamber employee feels that the percentage staying more than 2 days is greater than 15%, and plans to sample a set of tourists to...
Psy 248: STATISTICS- MARIA MIRANDA Computer Lab Assignment II, SP 2019 Comparing means using t-tests This assignment will give you practice choosing the appropriate test statistic to use for different research designs that all involve comparing using t-tests. You will need to enter the data, use SPSS to test hypothesis, and write a conclusion for each problem stating weather or not the samples differed significantly. To run all 3 tests, use: ANALYZE, COMPARE MEANS, and then select the type of...
Most questions answered within 3 hours.
-
A 1500-kg vehicle travels at a constant speed of 22 m/s around a
circular track that...
asked 9 minutes ago -
Suppose the firm's production function is Q =
K1/3L2/3.
a. If the rental rate of capital...
asked 8 minutes ago -
Can somebody make this program in C or C++ for me please? I have
2 hours...
asked 13 minutes ago -
Write the full electron configuration of the period 2 element
with the following successive IEs (in...
asked 14 minutes ago -
Calculate the value of ea by constructing an appropriate
graph:
Temp
k(M^-1s^-1)
15
0.0521
25
0.101...
asked 20 minutes ago -
What is the World Trade Organization (WTO? When was the WTO
created and how is it...
asked 19 minutes ago -
Question 5
Consider the video demonstration that you just watched. A more
complete explanation of what...
asked 17 minutes ago -
A person pulls on a container on a horizontal frictionless
surface with a force of 110...
asked 33 minutes ago -
Write a function makePoly(x,y,n,l) that receives a coordinate
point (x,y), an integer n representing the desired...
asked 28 minutes ago -
write an essay about How can the use of paper straws
have an impact on the...
asked 29 minutes ago -
A complex number is a number of the form a + bi, where a and b...
asked 32 minutes ago -
30 people are selected randomly from a certain town.
If their mean age is 32.2 and...
asked 42 minutes ago