Test whether the median results of an examination between three sections in PLM are the same using 5% level of significance.

Q: Does the sample median tend to target the population variance

A: If the original distribution is normal, the sample mean will also be normal, with variance , where n…

Q: Using the correct statistical method, decide which Group has the highest MEAN ? Does it significant…

A: Procedure to perform ANOVA using Excel: Enter the data in an excel sheet. Go to Data > Data…

Q: Do dominant and subordinate individuals differ in the means of giggle spectral CV?

A: For Group : Dominant Individual Standard Deviation, s: 0.05410 Count, N: 9 Sum, Σx: 2.755…

Q: n a certain school district, it was observed that 27% of the students in the element schools were…

A:

Q: What are the significance and relationship among the mean, variance, and standard deviation of the…

A: If the population mean is μ and the population standard deviation is σ then there are 3 formulae for…

Q: In a certain school district, it was observed that 35% of the students in the element schools were…

A: Solution

Q: Use the same scale to construct boxplots for the ages of the best actors and best actresses from the…

A: I solve this problem using technology,

Q: Test the claim that the proportion of people who own cats is larger than 20% at the 0.05…

A: Claim : Proportion of people who own cats is larger than 20% = 0.2 Sample size is n = 300 Sample…

Q: Identify three ways in which the total number of observations of bivariate data can be obtained from…

A: The data from two variable of a population are called bivariate data. The distribution of the…

Q: The sample statistic that is unbiased estimator is:

A: Note:Hey there! Thank you for the question. However, you have not posted a complete question.…

Q: In a certain school district, it was observed that 29% of the students in the element schools were…

A:

Q: If a researcher  decides  to use the .10 level of significance rather than using the conventional.…

A: Relationship between Type I error, Type II error and level of significance:   For small…

Q: In a certain school district, it was observed that 30% of the students in the element schools were…

A: From the provided information, It was observed that 30% of the students in the element schools were…

Q: (a) Classic ANOVA vs GLIM in comparing population means. 1-2pages

A: Mathematically, they may have similar results. But their conceptual usage differs. In case of ANOVA,…

Q: What is the observed significance level for this test?

A: here given , n= 50  sample mean  =  19.4  sample standard deviation  =  3.1

Q: What are the steps for finding the relative frequency of sample means above or below a specified…

A: The sampling distribution of sample means is approximately a normal distribution because of the…

Q: In a certain school district, it was observed that 24% of the students in the element schools were…

A: We have to find given population proportion..

Q: A music expert from a CD player company believes that 40% of music lovers prefer romantic music.…

A:

Q: Which statistical test should she conduct?

A: We need to identify suitable statistical test for given situation

Q: What is a pooled sample test?

A: The two populations’ variables are normally distributed and the population standard deviation are…

Q: State two differences between a cluster sample and a stratified random sample

A: Stratified Sampling: Stratified sampling is a sampling method, in which the population is divided…

Q: α is the observed level of significance whereas the p-value is the preset level of significance.…

A: We have given that, α is the observed level of significance whereas the P- value is the preset level…

Q: 10. What is the computed test statistic?

A: It is given that Sample size n = 100 Sample mean M = 144 Population SD = 20 Population mean = 150

Q: Provide an original example of how one could use a one-sample t-test to evaluate the effectiveness…

A: example of how one could use a one sample t test to evaluate the effectiveness

Q: what is the sample variance and standard deviation of 21​,16​,3​,9​,11

A: The formula for sample variance and standard deviation is given by:

Q: In a certain school district, it was observed that 25% of the students in the element schools were…

A: Since you have posted question with multiple subparts, we will solved first three subparts for you.…

Q: In a certain school district, it was observed that 32% of the students in the element schools were…

A: Given data number of success , x= 106 sample size, n =278

Q: Compute for Quartile Deviation, Variance, and Coefficient of Variation 12, 24, 25, 25, 19, 19, 24,…

A:

Q: Explain why there is more than one method for measuring central tendency?. Why not use a singly…

A: Different methods are needed because variables can have different levels of measurement and a…

Q: In independent sample tests, what is the best way to ensure equivalence between samples?…

A: The objective is to indentify the best method from the given options, that would ensure equivalence…

Q: Transforming raw scores into z scores allows researchers to

A: By converting a raw score to a z- score, we are expressing that score on a z-score scale, which…

Q: 1. Sohar University randomly sampled ten students and analyzed grade point average (GPA) and number…

A: i). Here dependent variable (y) is GPA and independent variable (x) is off-campus worked Hours. ii).…

Q: Explain why is it important to use ANOVA instead of several t tests to evaluate differences between…

A: Using several t -test, increase the type I error. In anova type I error is less as compare to t-test…

Q: The police lieutenant in charge of the traffic division has reviewed the number of traffic ctations…

A:

Q: State the two-way ANOVA identity for degrees of freedom and interpret its meaning with regard to…

A:

Q: In a certain school district, it was observed that 24% of the students in the element schools were…

A: We have given that  Sample size n = 249 Favourable cases X = 78 Sample proportion p^ = X/n

Q: 17.Describe how you will be able to compute for observed significance level or p-value of a given…

A: The objective is to find the significance value or p-value of a given data set.

Q: Does having a non-significant P-value means that the means of the sample will be the same? explain

A: The hypotheses for the means is constructed as: H0: The means of the sample will be the same. H1:…

Q: Measures of central tendency alone are insufficient to completely describe a sample because:

A: Hint: Central value for two samples can be same.

Q: Suppose an instructor would like to know if there is difference in the performance of her two…

A: Let us consider two population with mean and and standard deviation and respectively. If sample…

Q: How does an observed sample mean qualify as a rare outcome?

A:

Q: Explain the four steps involved in significance testing?

A: Hypothesis testing can be conducted in two ways: Critical value approach. P-value approach. The…

Q: Describe how you will be able to compute for observed significance level or p-value of a given data…

A: Please find the explanation below. Thank you

Q: In a certain school district, it was observed that 24% of the students in the element schools were…

A: Given  X=78, n=249

Q: A study is to perform a one-way ANOVA where the researcher considered a single independent variable…

A: a. In this case, there is a single independent variable with 5 categories.

Q: Consider a sample with data values of 53, 55, 70, 58, 64, 57, 53, 69, 57, 68, and 53. Computethe…

A: Given data : 53, 55, 70, 58, 64, 57, 53, 69, 57, 68, 53

Q: Identify the two factors that determine the persuasiveness of evidence.How are these two factors…

A: Let P denote persuasiveness. Let E denote evidence. Let AP denote audit procedures. Let n denote…

Q: Would median and quartiles be the right answer?

A: Measures of center :  A measure of central tendency is a summary statistic that represents the…