Please answer the following questions:1. Which feature of an independent-samples t-test distinguishes it from the other two types of ttests?a. The independent variable is measured on a nominal scale.b. The population standard deviation is known.c. The dependent variable is measured on a ratio scale.O d. The groups are unrelated.2. Which feature is required for a paired-samples t-test?a. The dependent variable is measured on an ordinal scale.b. Two samples from the same or linked participants are collected.c. The data are collected over at least three points in time.d. The population mean for one condition is known.

We have given the two statement one is about t - test, and another one is about paired- same sample…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Consider a sample data set with the summary statistics s = 112, Q = 58, and Qu= 203. a. Calculate lQR. b. Calculate IQR/s. c. Is the value of IQR/s approximately equal to 1.3? What does this imply? a. IQR =
Use the following data set to solve nos. 38 – 40. 8, 8, 9, 12, 13 38. What is the range of the distribution? 39. What is the value of the variance of the data set? 40. What is the standard deviation?
9. Find the sample standard deviations for the following sample data. Round your answer to the nearest hundredth. X: 23 a. 7.97 b. 9.32 c. 10.42 d. 7.13 20 14 35 28
Use MSExcel file for this item. Insert sceenshots of Descriptive Statistics pop-up menu for your solutions. Use confidence level of 90%. A. What is the standard deviation and sample variance? separate answers with a comma (i.e. 3.000,9.000) B. What is the mean, median and mode? C. What is the largest value, smallest value and the sum of values?
10. Find mean deviation and its coefficient using by A.M. and Median. Values 31, 46, 47, 48, 52, 58, 59, 60, 65, 66, 75.
5 - Which of the following will give the value for the third quartile? a. QUARTILE.INC(array, 0.25) b.QUARTILE.INC(array, 0.75) c. PERCENTILE.INC(array, 0.75) d.DECILE.INC(array, 0.30)
Here are the monthly wage scales of 8 workers from XYZ Knit Works. 15 13 18 12 21 13 26 22 a. Determine the mean of the workers' wages. Answer in exact fraction, or rounded to at least 4 decimal places b. Determine the variance of the workers' wages. Answer in exact fraction, or rounded to at least 4 decimal places
a. Develop a hypothesis test that can be used to determine whether the mean annual consumption in Webster City is higher than the national mean. Ho: $21.5 Ha: >21.5 b. What is a point estimate of the difference between mean annual consumption in Webster City and the national mean? (2 decimals) c. At a = 0.01, test for a significant difference by completing the following. Calculate the value of the test statistic (2 decimals). The p-value is Reject the null hypothesis? (4 decimals) Yes v What is your conclusion? Conclude the population mean consumption of milk in Webster City is greater tha
Below are the SPSS results of a related (dependent) samples t-test. Use the SPSS results to answer Questions 5, 6, and 7. Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 Statistics Posttest 57.1250 40 16.73962 2.64677 Statistics Pretest 49.9250 40 15.09014 2.38596 Paired Samples Test Paired Differences t df Sig. (2-tailed) Mean Std. Deviation Std. Error Mean Pair 1 Statistics Posttest - Statistics Pretest 7.200 12.313 ( a ) ( b ) ( c ) .001 Find the mean of the differences ( and standard deviation of the differences (Sd). Replace “a,” “b,” and “c” in the table above with the correct values. Round to the third decimal place. Do you think there is a statistically significant difference between the pretest and posttest at the .05 level of significance?
24 In your work, assume the 5% significance level. Use the following data Wicked Witch.csv to answer the below questions. Take a screenshot of your output and based on that, answer the following questions. a) Import the data into JASP and provide an explanation on the descriptive statistics for the variable Complaint split across regions. 1. Which of the regions has the highest average number of complaints, indicate the average? 2. Which of the regions has the largest standard deviation of complaints, indicate the standard deviation? 3. Based on the descriptive output from JASP, can we expect the average number of complaints across the four regions to be different? Why? b) Write a hypotheses for evaluating whether the average number of complaints caused varies across the four regions. c) Run the ANOVA analysis in JASP (with Complaints as the dependent variables and Region as the Fixed Factors). Provide a capture of the output and answer the following questions:
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