State which hypothesis test would be appropriate under the following conditions. Our data set’s mean is...
State which hypothesis test would be appropriate under the following conditions.
Our data set’s mean is being compared to a fixed or assumed value.
The data set comes from a population that has a normal distribution and we know the population standard deviation.
Group of answer choices
1--- z-test
2---- Mann-Whitney U Test
3----- 2-sample t-test with unequal variances
4--- t-test
5---- 2-sample t-test with equal variances
I just need to know which of the 5 is the right answer.
Thank you.
Homework Answers
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State which hypothesis
test would be appropriate under the following conditions.
Our data set’s mean is...
only need 2-sample t-test for equal variance filled out 1. Create a table using the provided...
only need 2-sample t-test for equal variance filled
out
1. Create a table using the provided headings for the following tests. The comparison is what is being statistical tested. The other assumptions column should be any additional information needed to distinguish when that test is used as compared to the other tests in the table. (5 pts) Tests to include: 2-sample t-test for equal variance, 2-sample t-test for unequal variance, Mann-Whitney U-test, Z-test, Paired t-test, Wilcoxon Signed Rank Test, 1-Sample...
An alternative hypothesis in a one-sample Z-test could state which of the following: Group of answer...
An alternative hypothesis in a one-sample Z-test could state which of the following: Group of answer choices (A) The mean of sample 1 is greater than the mean of sample 2. (B)The mean of sample 1 is equal to the mean of sample 2. (C)The sample mean is greater than the population mean. (D)The sample mean is equal to the population mean.
To An independent-measures t hypothesis test is appropriate when the value for a is known a....
To An independent-measures t hypothesis test is appropriate when the value for a is known a. b. the mean for a treated group of subjects is compared to a known population mean C. one sample is used to test a hypothesis about one population P there are two separate samples containing different subjects 17. One sample of n 5 scores has a variance of s 10 and a second sample of n= 10 scores has s pooled variance is computed...
5. Which of the following would be an appropriate Alternative Hypothesis? A) The mean of a...
5. Which of the following would be an appropriate Alternative Hypothesis? A) The mean of a population is equal to 60 B) The mean of a sample is equal to 60 C) The mean of a population is not equal to 60 D) The mean of a sample is not equal to 60 E) All of the above 6. Which of the following statements about the level of significance in a hypothesis test is true? A) The larger the level...
In the picture below, I have the output for the same two sets of data. I ran the hypothesis test and the confidence interval. If you had a choice to use one output or the other, which would you choose...
In the picture below, I have the output for the same two sets of data. I ran the hypothesis test and the confidence interval. If you had a choice to use one output or the other, which would you choose and why? Make sure to be specific and include what information you get from each and what information you don't get if you use one over the other. Options Two sample T summary hypothesis test: : Mean of Population 1...
Expedia would like to test the hypothesis that the average roundtrip airfare between Philadelphia and Paris...
Expedia would like to test the hypothesis that the average roundtrip airfare between Philadelphia and Paris is higher for a flight originating in Philadelphia when compared to a flight originating in Paris. The following data summarizes the sample statistics for roundtrip flights originating in both cities. Assume that the population variances are equal. Originating City Philadelphia Paris Sample mean $1,240 $1,060 Sample size 15 19 Sample standard deviation $270 $240 1. If Population 1 is defined as flights originating in...
An analyst wants to test a hypothesis on the means of two populations. She takes samples...
An analyst wants to test a hypothesis on the means of two populations. She takes samples from each population. The variances of the population are not known, but are assumed to be equal. Statistics calculated from these samples are Sample 1 Average 1,053.6 Count 34 Sample 2 Average 1,079 Count 29 The pooled variance is calculated as 365.9 Based on this data calculate the t statistic to use in the hypothesis test. Enter your answer to 2 decimal places.
Expedia would like to test the hypothesis that the average roundtrip airfare between Philadelphia and Paris...
Expedia would like to test the hypothesis that the average roundtrip airfare between Philadelphia and Paris is higher for a flight originating in Philadelphia when compared to a flight originating in Paris. The following data summarizes the sample statistics for roundtrip flights originating in both cities. Assume that the population variances are equal. Originating City Philadelphia Paris $1,240 $1,060 Sample mean Sample size Sample standard 15 19 deviation $270 $240 If Population 1 is defined as flights originating in Philadelphia...
Which of the following are assumptions of the z test when conducting a hypothesis test? Please...
Which of the following are assumptions of the z test when conducting a hypothesis test? Please select all correct answers. Group of answer choices. A.The independent variable is assessed using a scale measure. B.A two-tailed test is being used. C.The participants are randomly selected. D.The distribution of the population must be approximately normal. E.A nonparametric test is being used.
Based on the following description, select the most appropriate statistical analysis to conduct, i.e. which test...
Based on the following description, select the most appropriate statistical analysis to conduct, i.e. which test or procedure should you use to answer the posed scientific question: You wish to determine if the body temperature of your lab rabbits and their weight are related to each other. Paired t-test Mann Whitney U test Chi-squared goodness of fit test Linear Regression Correlation Analysis
only need 2-sample t-test for equal variance filled
out
1. Create a table using the provided headings for the following tests. The comparison is what is being statistical tested. The other assumptions column should be any additional information needed to distinguish when that test is used as compared to the other tests in the table. (5 pts) Tests to include: 2-sample t-test for equal variance, 2-sample t-test for unequal variance, Mann-Whitney U-test, Z-test, Paired t-test, Wilcoxon Signed Rank Test, 1-Sample...
To An independent-measures t hypothesis test is appropriate when the value for a is known a. b. the mean for a treated group of subjects is compared to a known population mean C. one sample is used to test a hypothesis about one population P there are two separate samples containing different subjects 17. One sample of n 5 scores has a variance of s 10 and a second sample of n= 10 scores has s pooled variance is computed...
5. Which of the following would be an appropriate Alternative Hypothesis? A) The mean of a population is equal to 60 B) The mean of a sample is equal to 60 C) The mean of a population is not equal to 60 D) The mean of a sample is not equal to 60 E) All of the above 6. Which of the following statements about the level of significance in a hypothesis test is true? A) The larger the level...
Expedia would like to test the hypothesis that the average roundtrip airfare between Philadelphia and Paris is higher for a flight originating in Philadelphia when compared to a flight originating in Paris. The following data summarizes the sample statistics for roundtrip flights originating in both cities. Assume that the population variances are equal. Originating City Philadelphia Paris $1,240 $1,060 Sample mean Sample size Sample standard 15 19 deviation $270 $240 If Population 1 is defined as flights originating in Philadelphia...
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