You wish to test the following claim (Ha) at a significance level of a = 0.001. Ho: p=0.35 Ha:p> 0.35 You obtain a sample of size n = 567 in which there are 222 successful observations. What is the critical value for this test? (Round to three decimal places.) Critical value = 3.090 0 What is the test statistic for this sample? (Round to three decimal places.) Test statistic =

Q: Give an example of a study that would collect univariate and quantitative data.

A: Give an example of a study that would collect univariate and quantitative data.

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other ungs, the mean…

A: Here, the claim is the mean mileage (µ) is less than 2850 miles. So, the alternative hypothesis will…

Q: what would be the z-score?

A: here given p = population proportion of Americans have experienced times when they haven't been able…

Q: How can I create a histogram when the only data I have is the percentage of 16 year olds who used…

A: To construct the histogram, the first thing is to determine the number of class intervals. There is…

Q: single term that best describes statistics and why?

A: A statistic is the measure of an attribute computed from a sample. The statistics calculated from…

Q: The test statistic is wrong

A: We have given that  s12  = 1315,  n1= 15 s22  = 1523,  n1= 19

Q: IQ scores for subjects with medium lead levels in their blood and another sample of subjects with…

A: Mann-Whitney U test: The Mann-Whitney U test is non-parametric statistical method that is used for…

Q: Explain in your own words what it means that a sample must be representative of the population.…

A: To explain about sample and population and to choose the best fit for the study on students of the…

Q: What is the drawback of summarizing the data using the median

A: Median: Median is the middle value of the set of numbers. The set of numbers should be arranged in…

Q: what is statistics- future scenarios in terms of doing project management?

A: Statistics analysis-future scenario helpful in estimation of expecting compeletion time of the…

Q: The New York Jets lost their first 8 games of the 2020 NFL season. In those games, they scored the…

A: The data set :-X :- 17, 13, 7, 28, 10, 0, 10, 9

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: Give 2 examples of Measures of central tendency to ungrouped data and how to solve it

A: Measures of Central Tendency The central tendency of the dataset can be found out using three…

Q: ?

A: Statistic is similar to mathematics but it can be applied in practical situations. Example, if there…

Q: What information can you get from a histogram that you can't get from just knowing the mean or…

A:

Q: what are the real-life implications of statistics in businesses? give 3 examples

A: The statistics used in all the departments of business activity like sales, purchase, production,…

Q: What does a researcher attempt to do when constructing an "analysis story" to go with the results of…

A: Research: Research is the thoughtful reflection of a study concerning a particular interest or…

Q: Why inferential statistic is important for physical activity educators ? Please provide two examples…

A: 1] Inferential statistics is used to make the generalization about the population based on the…

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: Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke…

A: Given ,  Aspirin alone :  Sample size = n1 = 200  Number of strokes = x1= 60 Sample proportion = p^1…

Q: I’ll be using one of the statistical tests that we discussed this semester to determine whether…

A: Here we want test whether student's score on the pre course and post course knowledge assignment is…

Q: What is the goal of statistics?

A: The main purpose of statistics is to understand the data deeply.

Q: Why are t statistics more variable than z -scores?

A: t-statistics uses sample variance instead of population variance.   t statistics has both s and x̅.

Q: Explain the difference between “bias”, “error”, and “precision”. Be sure your definition explains…

A: Given information: Bias, error, and Precision

Q: A major company would like to assess the relationship between self confidence and sales levels in…

A: In this case, we will use correlation coefficient.

Q: Find the test statistic for the problem?

A: It is given that Sample size n = 450 Number of patients had a successful knee surgery operation, X =…

Q: When do we use a t-statistic instead of a z-statistic to help infer a mean?

A: Hypothesis tests are used to test population claims. It has two population statements, where one is…

Q: Find an estimator for b when a = 0 using the method of moments.

A: It is given that X1, X2, .......,Xn follows Uniform(a, b)

Q: Can you explain how you find the p-value of the test statistic

A: The test statistic is -2.25 and the degrees of freedom is 80.

Q: What is the discrimination coefficient?

A: Discrimination coefficient

Q: In spss, what test can you do to compare the score of variables?

A: As per the question we have to compare the score of variables if we have 2 independent samples, we…

Q: why is it  important for students to know something about statistics as applied to psychology?

A: Yes it is important for students to know something about statistics as applied to psychology…

Q: If Ted scores in the first quartile on his math test, that means he scored better than most students…

A:

Q: (a) What are the null hypothesis H, and the alternative hypothesis H, that should be used for the…

A: The type I error is defined as the rejecting the null hypothesis when actually it is true. The type…

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

Q: What are the Four Steps to use when working with the t-test ?

A: The Four Steps to use when working with the t-test with p-value approach is given below: Step 1:…

Q: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…

A: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…

Q: Provide an example of a study, including the variables, level of measurement, and hypotheses, for…

A: Inferential statistics is about testing a claim about a population using suitable test statistic.