Test the independence of the two variables in the table below: Enter the test statistic (to 4 decimal places)   Var2 below\Var1-> Yes No Happy 40 80 Sad 120 200

Q: How to Converting to z Scores is done?

A:

Q: Can you give example when to use mean, median and mode?

A: INTRODUCTION following are measures of central tendencies. 1. Mean  2. Median  3. Mode 1. Mean: let…

Q: The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the…

A: The cumulative frequencies are obtained in the below table:

Q: Test the independence of the two variables in the table below:   Var2 below\Var1-> Yes No Happy…

A: Given that, variable 1 indicates yes or no. And variable 2 takes values 40 and 80 for Happy.  And…

Q: Anna is 3 years old and in the 42nd percentile for height in her age group. What does this mean?…

A: Given: 1)Anna is 3 years old and, 2) In the 42nd percentile for height in her age group. In the…

Q: Explain how can we find the corresponding z-score of an area and a percentile.

A:

Q: which is more meaningful in ranking academic performance quartiles or deciles

A: A data set's quartiles divide the data into four equal parts, each containing one-fourth of the data…

Q: Describe the t test for 2 independent samples.

A: In order to assess whether there is statistical evidence that the related populationmeans are…

Q: A software company is interested in improving customer satisfaction rate from the 65% currently…

A: Given,population proportion(P)=0.65sample size(n)=207no.of customers who were satisfied(x)=145

Q: The median of the data 82, 139, 79, 148, 102, 128, 112, 92 is_ O 102 107.00 O 214.00 O 158.00 O 112

A: Given  The data are 82, 139, 79, 148, 102, 128, 112, 92 N=8

Q: What type of variable is anxiety rating (highly anxious ,moderatelyanxious , or relaxed)

A: Concept: Data in statistics is broadly divided into two categories namely qualitative and…

Q: D. Determine a data set with 7 values that has a mean of 10 and a median of 15 and a mode of 22.…

A:

Q: Example 1: Recent research suggests that a pregnancy within less than two years of a live birth…

A: Given: Sample size n = 15 Significance level α = 0.10 Formula Used: Test-statistic t = d-μdsdn…

Q: Help with F- Statistic and P-Value please!

A: The mean for sample means is, The sum of square for treatments is, The sum of square for error is,…

Q: Which variable is the explanatory variable and which variable is the response variable? ? Explain…

A: Let X be the teen birth rate and Y be the people living in poverty.

Q: Explain about why z Test Is Appropriate.

A: The z test is basically a statistical test for testing whether is there any difference between…

Q: On his 5 tests, Ahmad earned a total of 450 points. What was his mean number of points earned per…

A: The objective of this question is to find the mean number of points Ahmad earned per test. The mean…

Q: How do i find the test statistic and the p-value?

A: The sample sizes are 22 and 22.

Q: Why t Test Not Appropriate?

A: t Test is the statistical parametric test which is used to compare the means of the population. It…

Q: what is the independent and dependent variable in the sentence below?   What is the level of…

A: Variables are any characteristics that can take on different values, such as height, age,…

Q: Random samples of 25 frequent flyers on United Airlines and on Delta Airlines were obtained. The…

A: It is given that 25 frequent flyers data is obtained separately for United Airlines and Delta…

Q: how do I find the test statistics and pvalue using excel or statcrunch? thank u

A: It is given that out of 308 orders, it is found that 37 are inaccurate. The sample proportion is…

Q: A teacher claims that over 14% of maths students are married. In the suevey at the beginning of…

A:

Q: Describe the four cases of the Leading Coefficient Test.

A: Let given polynomial function is fx=anxn+an-1xn-1+an-2xn-2+......+a2x+a1x+a0 The graph of given…

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: Using excel the median is 16.70 but when I calculate it manually it comes to 13.9. Why is excel…

A:

Q: Define most powerful test.

A: Define most powerful test

Q: Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th…

A: It is clearly given in statement that at Department of Motor Vehicles waiting line is Mina wait time…

Q: What is difference between the Differences between Mean and Median?

A: The measures of centre or measures of central tendency are those descriptive measures that give the…

Q: Find the percentile rank of a test score of 76 for the data set 70,73,68,83,78,80,89,88,65   FULL…

A: Given data is70,73,68,83,78,80,89,88,65

Q: The varaibility of a statistic is described by

A: The variability means the spread ness of the data set. The best measure of spread ness is standard…

Q: What is the percentile rank x=15 and what is the score for 75th percentile?

A: If the we have no of scores is 15 then we have formula for percentile rank as:…

Q: How to determine to cut ap value in statistics?

A: P-value: The p-value is a measure of degree of the evidence against the null hypothesis. The…

Q: explain what is measured by the sign of a z -score and what is measured by its numerical

A: here use basic of standard normal random variable z -score

Q: A histological test for cancer has sensitivity, specificity, positive predictivity, and negative…

A: To find, Which of the four indicators would you use to reassure a patient that the positive result…

Q: What is the discrimination coefficient?

A: Discrimination coefficient

Q: What is the 75th Percentile of a data set when the Inter Quartile Range (IQR) is 12.5 and the first…

A:

Q: Describe how to Convert to Transform Standard Scores?

A:

Q: Problem 4 (counts as two problems): Let X1, X2, ... , X,be a collection of independent discrete…

A: Note: Hey, since multiple subparts are posted, we will answer first three subparts according to our…

Q: 1. The degrees of freedom are: Select ] 2. The mean square for groups (MSG) is: [Select] 3. The mean…

A: It is given that Sample size n = 45 Number of groups, k = 3 SSG = 192247.3, SSE = 117737.3