Assume that you have a large set of data that ranges from a low score of 209 to a high score of 283. Then answer the following questions about that data. 15. What would be the best width of class interval for that data?

Q: How do I calculate to get this std dev answer?

A: Given Information: Proportion p=0.40 Sample size n=50 Based on the concept of Central limit theorem,…

Q: A very good professional baseball player gets a hit about 35% of the time over an entire season.…

A: Solution:- The commentator is wrong because the law of averages does not apply in this situation.…

Q: Does the mean or median better represent the data? Explain your reasoning.

A: Given data:   30 15 40 40 40 30 50 40 100 30 30 30 30 150 30 30…

Q: Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1084 adults, 86% said that…

A:

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: Chi Square tests are used to analyze qualitative data such as opinions, observations or surveys and…

A: Chi-Square Tests: Definitions and Examples Chi-Square Goodness of Fit Test Definition: The…

Q: Lists down some differences and similarities of INTERVAL and RATIO DATA.

A: Ratio scale and interval scale definition.

Q: SAT Math Suppose that scores on the SAT Math test are approximately normal with a mean of 500 and a…

A:

Q: It looks daunting, but really, much of the chapter is taken up by optional exercises and questions.…

A: Statistics is the branch of Applied Mathematics in which we do collection, analysis, interpretation…

Q: You like to eat tuna sandwiches. Recently you have noticed that there does not seem to be as much…

A:

Q: It is a R question. Using your personal random sample of 1,000 observations, find: the average age…

A: #Generating 1000 random sample(considered as age)random<- sample(1:100, 1000, replace =…

Q: A sample of psychology students in MSU-IIT was part of a study that examined their happiness level…

A:

Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: The sample mean of a dataset is 3.8 from 13 observations, calculate the sum of observations.

A: From the provided information, Mean of dataset (x̅) = 3.8 Number of observations (n) = 13

Q: This is statistics concepts and controversies please help just trying to learn ?

A: Note: Hey there! Thank you for the question. As you have posted several sub-parts of a question,…

Q: What is statistics, how do you think statistics can be helpful in ours lives. Think of an area of…

A: Statistics is a science which deals with the collection, classification, presentation, comparison…

Q: What is statistics and why do you need to use statistics in your research? How important are they?

A: Statistics: Statistics is the branch of mathematics that deals with the collection of data,…

Q: Explain the difference between quantitative and qualitative measures. Provide an example of each.

A: Introduction Statistics is a field that involves collection, arrangement and analysis of the data to…

Q: Researchers conducted a study to understand the effect of gender on statistics anxiety. They believe…

A: Given, we have two samples males and females.

Q: could you please tell me why explain in simple terms why the power of a test matters to the users of…

A: Why power test is matters in statistics?  Having  enough statistical  power is necessary  to draw…

Q: Please explain how you got the 9.36 z-score test statistic?

A: Z for difference of proportion is given by,  Z= p1-p2/(S.E.)  SE is standard error which is…

Q: step 4 can you calculate the p value without using excel?  need to be able to do on a test without…

A: From given data  n=19 so, degree of freedom is df=n-1=19-1=18

Q: What are application of statistics and math?

A: Statistics help in providing data as well as tools to analyze the data. Some powerful techniques are…

Q: The data is available at Weather in Hamilton in January 2020 (Ontario) - Detailed Weather Forecast…

A: Let us consider the central tendency measures as mean, median and mode: Let us denote X as the…

Q: The statement of fact below comes from a statistical measurement. For the statement, briefly discuss…

A: It is given that we measured the population of the country as it is 30900000 in 1855. Population of…

Q: Your neighbor teaches math at your local elementary school. This week, her students are being…

A: Most commonly used measure of central tendencies are mean, median and mode. These measures of centre…

Q: Give 3 examples of the uses of statistics and how these examples affects your life. (Limit your…

A: Statistics is a branch of applied mathematics and is a collection of numerical statements of facts.…

Q: How do i calculate finding the percentage between two z scores?

A: To find the probability between two z-scores: z-score represents the number of standard deviations…

Q: How do you test for reliability

A: Reliability: Reliability is the consistency of the measures used in a testing process. In other…

Q: Name two limitations of this test.

A: Chi Square Test The Chi-square test is a non-parametric type that does not have distribution and is…

Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

A: Given:  Sample size = 8, sample mean = 10, level of significance = 0.05.

Q: doctor is studying the effects that the amount of junk food has on blood pressure.  As each patient…

A: Here  Observational study means Simply data is collected without interfering the objects..m While In…

Q: What are the Ordinal Measures?

A: Ordinal  scale is the 2nd level of measurement that reports the ranking and ordering of the data…

Q: one percent of grades are greater than what z-score?

A:

Q: Grade 6 and Grade 8 students were asked how long it takes them to get to school in the morning. The…

A: The measure of the centre is calculated using the observations such as mean, median and mode. The…

Q: Describe of two examples of data sets for each of the four levels of measurement. Justify your…

A:

Q: Can you please finish question 5,6,7and 8 I would like to compare with my results please explain…

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

Q: lease dont do handwritten and please explain every concept, i will definitely like or else skip…

A: Consider the given dataset: Tornado Length (In…

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: Obtain the sample size. The formula of sample size is, Obtain the area of probability in the right…

Q: Hey I was wondering how can I find the estimate value of a point that is on a scatter plot chart?

A: Here we want to know the solution.

Q: Please solve step 2,3,4 …thank you!

A: Given Information: The hypothesized value for the 2013 average annual number of Melanoma, mortality…

Q: Explain about the Mean Difference Score.

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.