Suppose a sample of n students were given a diagnostic test before studying a particular module and then again after completing the module. We want to find out if, our teaching leads to improvement in students test score. Student Pre-module score Post-module score Difference 1 18 22 4 2 21 25 4 3 16 17 1 4 22 24 2 5 19 16 -3 6 24 29 5 7 17 20 3 8 21 23 2 9 23 19 -4 10 18 20 2 11 14 15 1 12 16 15 -1 13 16 18 2 14 19 26 7 15 18 18 0 16 20 24 4 17 12 18 6 18 22 25 3 19 15 19 4 20 17 16 -1 a) Construct the null and alternative hypothesis. b) Calculate the t value using appropriate formula. c) Perform the paired t-test in statistical analysis software. d) State the conclusion.

Q: Exhibit 12-15 The table below gives social media preferences for random samples of men and women.…

A: Facebook Instagram LinkedIn Total Men 630 310 290 1230 Women 750 430 240 1420 Total 1380 740…

Q: Suppose we collect information on the number of hours that 10 randomly selected students spent…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Use specific statistical tool so check that modules have strong impact on average Student ID 10 12…

A: Let μ1 denote the average of pre-module score and μ2 denote the average of post-module score.…

Q: Here are the winning margins for the men's NCAA basketball championship games from 1979-2019 (for…

A: The question is about frequency distribution Given :   To find : To construct frequency table

Q: The test is used to test hypotheses associated with enumerated, categorized data. This test is used…

A: The objective is to determine the appropriate test, which involves enumerated categorized data.…

Q: It has been observed that social media has been very attractive to the millennials and has been used…

A: Given data of attention time: 20.5 3.4 20.7 12.1 2.9 21.5 5.4 32.0 32.6 35.6 12.9 33.1 14.0…

Q: Over the last Ten months, the following numbers of absences have been reported: 39, 12, 8, 12, 1,…

A: Given problem Given that   Over the last Ten months, the following numbers of absences have been…

Q: It is claimed that the average number of vehicles using a mall’s parking lot each day is 244…

A: Given: μ0=244, α=0.01 It is required to test whether the collected data present sufficient evidence…

Q: Create a study that test factors that affect a students mental health.     Purpose is to identify…

A: Given that, The variable of interest is factors that affect a student's mental health. The null…

Q: A doctor’s office staff has studied the waiting time for patients who arrive at the office with a…

A: Solution-: For given data we show that, (1) the frequency distribution (2) the relative frequency…

Q: You intend to estimate a population proportion with a confidence interval. The data suggests that…

A: The confidence level is 95%. Therefore, α =0.05.

Q: Researchers examined the influence of a television program on children's aggressiveness. The number…

A: Note: Since you have mentioned that “D wasn’t solved”, it is our understanding that you need help…

Q: 1. For this problem, treat the data in the Pre-Module and Post-Module scores as independent samples.…

A: Given: The data in pre-module and Post module scores are independent samples. Sample size of both…

Q: Determine whether the results appear to have statistical significance, and also determine whether…

A: The following information has been provided: The sample size is n=870. The sample proportion is…

Q: Qualifications of male and female head and assistant college athletic coaches were compared in an…

A: Gender    1–3    4–6    7–9   10–12   13+  Row…

Q: Help  Curvey two different groups of at least 10 people each.  It has to be a quantitave type of…

A:

Q: Two students recorded their scores on weekly  MMW performance task that were 20 items. Student A:…

A: Here the give information is Two students recorded their scores on weekly MMW performance task that…

Q: An intelligence test was recently administered to a group of 10 people. Their respective completion…

A: 34, 45, 41, 45, 30, 38, 30, 45, 30, 37Sample of size(n)=10

Q: A company surveyed adult Americans about their consumer debt. The article reported that 48% of…

A:

Q: Suppose we want to know whether or not three different exam prep programs lead to different mean…

A: Let μi denotes the population mean score for the Group i, i=1,2,3. Given that ni=10;i=1,2,3,…

Q: The mean number of sick leave days that an employee of a company takes per year is believed to be…

A: We have given that The data and the data are 8, 6, 8, 11, 12, 4, 15, 3

Q: Define one-sample t-test

A: Single mean test (one sample t-test): Single mean test is used to compare the mean of a variable in…

Q: The null and alternative hypotheses would be:          Select an answer p1 μ1  Select an answer ≠  =…

A: It is claimed that, freshmen psychology majors more likely to change their major before they…

Q: Generate two set of data of at least with ten data points using any scenario of your choice, Using…

A: The data is: Data Set 1 Data Set 2 0.319691 0.721655 0.134176 0.430515 0.900752 0.225351…

Q: ou hypothesize that younger adults are more stressed than all other age groups. You compare stress…

A: The objective of the question is to calculate the degrees of freedom between samples in a one-way…

Q: How to draw a boxplot with the same quartile 2 and quartile 3?

A: Boxplot is a graphical representation that indicates the five-number summary of data. The…

Q: It is important for researchers to account for attrition or loss of participants during follow-up.…

A: It is important for researchers to account for attrition or loss of participants during follow-up.…

Q: Discuss all possible factors that would affect the validity of test scores

A: A test score is the value of the test statistic when the values of the parameter are put.

Q: Please please do this question with 50 first data values Data:  6 1 24 12 23 28 3 16 18 25 13 19…

A: frequency distribution

Q: The data represent the number of days off per year for a sample of individuals selected from ten…

A: Data given  20,26,40,36,23,42,35,24,30,33

Q: A study reported the results of a randomized trial of whole-body hypothermia (cooling) for neonatal…

A: a.   It is given that, 25 of 93 infants of hypothemia group died and 41 of 93 infants in the control…

Q: Explain how you will use Paired Sample t-test in any research with a suitable example.

A: Paired sample t-test The paired sample t-test, sometimes called the dependent sample t-test, maybe a…

Q: Customers waiting at Ellerton Bank have been complaining about the amount of time they must wait in…

A: The given data set is, 21, 14, 14, 14, 19, 16, 16, 11, 16 The number of observations in the data set…

Q: A survey was conducted among the employees of a certain company and they were asked about their…

A: Given data(x),(no. of observation (n)=20) 120, 85, 94, 67, 112, 88, 92, 110, 125, 70, 83, 90, 84,…