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Hypothesis Testing

Establishing a Hypothesis

Establishing a Hypothesis Open the SPSS data file "chicago.sav" and identify the following data information: 1. Use the data view to identify the units of analysis in this data set. 2. Use the variable view to identify a) the number of variables in this dataset, b) the meaning of variables "pliceex" and murderer". 3. Use the

Six Sigma Tools for Testing Statistical Significance in Sleep

Sam Sleep researcher hypothesizes that people who are allowed to sleep for only four hours will score significantly lower than people who are allowed to sleep for eight hours on a management ability test. He brings sixteen participants into his sleep lab and randomly assigns them to one of two groups. In one group he has partici

Problems involving the Hypothesis Testing of Means

1. From a population of cans of coffee marked "12 ounces," a sample of 50 cans was selected and the contents of each can were weighed. The sample revealed a mean of 11.8 ounces with a SAMPLE standard deviation of 0.5 ounces. a. Formulate the hypotheses to test alternative hypothesis that the mean of the population is less than

Wilcoxson Rank Sum Test

Please help with a wilcoxon some help in the following. The group is for 65 teachers doing a pretest post and at 12 months knowledge quiz on diversity in the class room...I need the following test (wilcoxon with p value set at 0.05 and any explanation you can offer on any significant findings. I know there are differences

Statistical Analysis Hypothesis Help

The following data compares the statistics scores from 2 groups of students who were randomly sampled at the beginning of the study, and then randomly assigned to treatment conditions. One group of students was sleep-deprived and one group of students got a normal night's sleep. Sleep Normal Deprived Sleep 45 79 55 52 67 84

Hypothesis testing problems in SPSS

Statistical aptitude scores are known to be normally distributed, with mean = 50. A researcher has designed a new program intended to improve studentsââ?¬â?¢ statistical aptitude, and has enrolled a sample of 30 students in it. The researcher then collects studentsââ?¬â?¢ statistical aptitude scores at the end of the p

Statistics: Large school district recent curriculum experiments

See attached Excel data file. Scenario Assume that you are working on a team that has been commissioned by a large school district to collect and analyze data related to a recent curriculum experiment designed to improve student scores on statewide-standardized tests. The schools in this district are predominantly large, u

Statistics: Large school district analysis of recent curriculum experiments

See attached data file. Scenario Assume that you are working on a team that has been commissioned by a large school district to collect and analyze data related to a recent curriculum experiment designed to improve student scores on statewide-standardized tests. The schools in this district are predominantly large, urban s

Hypothesis Testing Problems for Research Industry

1.) Research in the gaming industry showed that 14 percent of all slot machines in the United States stop working each year. Short s Game Arcade has 75 slot machines and only 5 failed last year. Use the five-step hypothesis-testing procedure at the .05 significance level to test whether this data contradicts the research report.

Null Hypothesis Testing

Can you please help me with the following questions? I have to write a paper in APA format and this is part of the paper is what I'm stuck on. Thank you in advance. 1.) Explain the purpose of null hypothesis testing and provide examples of hypothesis that may be tested with the data set. (attached is the data). 2.) Exp

True or False Questions & Hypothesis Testing

See the attached files. 1. True or false, and explain: (a) The p-value of a test equals its observed significance level. (b) The alternative hypothesis is another way of explaining the results; it says the difference is due to chance. 2. Five hundred draws are made at random with replacement from a box of numbered ti

Applied Statistics for Health care

It was a good start addressing the introduction to hypothesis testing process. However, it is missing an important part which is the approach of measuring the difference in behaviors between the 2 generations, What is your approach? Also, what about the other components of hypothesis testing such as confidence level?

Hypothesis Testing: Sensory Discrimination

** Please see the attached file for the complete problem description ** Please help complete the enclosed data analysis Sensory Discrimination Please help me to numerically, summarize the results and analyze the data. The data is Alice's results of whether she knows the difference between Coca Cola from Pepsi. She claims

These are Statistics 1 problems on the topics-Introduction to the t Statistic and The t Test for two independent Samples from Chapters' 10 & 11 of Statistics for the Behavioral Sciences text Book 8th edition. By Gravetter & Wallnau

Problem Set 1: Chapter 10: problems 2, 14, 22, 24; Chapter 11, problems 2, 4, 12, 20 Chapter 10 2. Describe what is measured by the estimated standard error in the bottom of the independent measures t test. 14. Do you view a chocolate bar as delicious or as fattening...? Males Females n = 6 n = 9 M = 31 M = 45

Applied Statistics for Health Care

Can anyone give me 2 or more examples of a comparison between the old times and the present day? For example: Why do people care about their weight in the present day than in the olden days? Can you formulate a hypothesis similar to this statement that can be tested, and how would it be tested?

Null & Alternative Hypotheses Explained

I am trying to write a hypothesis to explain my results (findings). The challenge was to see if there was a relationship between the sex of the emploee and the geographic location in terms of the number of suggestions. I do not know how to write the null hypothesis and the alternate hypothesis.

Applied Statistics for Health Care

Researchers routinely choose a-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower a-level (e.g. 0.01)? What are some situations in which you might accept a higher level (e.g. 0.1)? Why? Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and

Hypothesis Testing Problems for University Sexism

Use the Student_Data.xls file which consists of 200 MBA students at Whatsamattu U. The file includes variables regarding students' age, gender, major, GPA, Bachelors GPA, course load, English speaking status, family, weekly hours spent studying. Each of the three assigned problems should be formatted as a one page memo. Answers

Hypothesis, Level of Significance and Critical Value

A PC manufacturer claims that no more than 5% of their machines are defective. In a random sample of 100 machines, it is found that 8 are defective, does the sample data provide sufficient evidence to conclude that the defective is more than 5%. Use the hypothesis testing procedure and alpha = .10. Be sure to address points a -

PB 7.9 Rank of birth and age at oncet (Biostatistics)

The corresponding notes are on chapter 7 (Page 216) :,_Fisher_L.D.,_Heagerty_P.J._Biostatistics._A_methodology_for_the_health_sciences_(2004)(2nd_ed.)(en)(871s).pdf Following is the problem to solve: PB 7.9 McKeown et al. [1952] investigate evidence that the environment i

Question about Applied Statistics Health Care

1) Kindly explain to me the importance of random sampling. What problems/limitations could prevent a truly random sampling and how can they be prevented 2) How large would a population have to be for a sample to be appropriate (i.e., rather than measuring the whole population)

A fictional statistical representation of school lunch programs

I need help with a fictional statistic example of schools with low, med, and high participation in free school lunches. The question would be: Does the level of participation of free lunch programs in schools make a difference in the children's actual participation? This example will need to include a description of the 5-ste

Distribution of IQ Scores

IQ scores have u = 100 and o = 15. The distribution is normal. A new drug is touted as having the effect of raising IQ by 10 points and we recruit a sample of n = 36 people to test it on. Using a=.05, how much power will we have? Please show work. What is the probability of randomly selecting a red haired person from th

Case Study Data Analysis

I am trying to understand how to analyze the attached spreadsheet so I can explain to class mates. there are four tabs that I need help on

Need help understanding info given for a statistics word question

http://media.pearsoncmg.com/ph/esm/esm_mcclave_sbe10e_09/applets/meanht.html For this exercise, use n = 100 and the normal distribution with mean 50 and standard deviation 10. Each time you click on ââ?¬Å"Simulate,ââ?¬Â? the applet runs 100 hypothesis tests with the conditions you have set and reports the number of t