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    Descriptive Statistics

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    Chi-Square Analysis: Sex vs. Year of College

    Can you help with this sample question...Please end the solution in a doc file so I can open it..also could you send the minitab solution as well it helps me to follow...Thanks Conduct a chi-square analysis to determine whether sex and the year in college are related. Report your results in APA format and write one to two sen

    Logistic Multiple Regression Analysis Using SPSS

    Thank you for your hard work on this - here is a note from a friend who is working on the same issue - he is referring to the SPSS input: The correct analysis was to run a hierarchical logistic regression entering perceive, safety and gender in the first block and previous, selfcon and sexexp in a second. I used forced entry

    Statistics: Probability with a Roulette Wheel and Population Data

    Question: A roulette wheel has 38 slots, numbered 0, 00, and 1 to 36. The slots 0 and 00 are colored green, 18 of the others are red, and 18 are black. The dealer spins the wheel and at the same time rolls a small ball along the wheel in the opposite direction. The wheel is carefully balanced so that the ball is equally likely

    Graduating with Debt

    University %w/debt amount$ College %w/debt amount% Pace 72 32,980 Wartbug 83 28,758 Iowa State 69 32,130 Morehouse 94 27,000 Mass. 55 11,227 Wellesley

    Methods and Random Variables

    Consider the experiment of tossing a coin twice. 1. List the experimental outcomes. 2. Define a random variable threat that represents the number of heads occurring on the two tosses. 3. Show what value the random variable would assume for each of the experimental outcomes. 4. Is the random variable discreet or continuous?

    Stats: Normal Distributions, Sample Means, and Null Hypotheses

    1. To test Ho: μ=20 versus H1: μ<20, random sample size n=12 is obtained from a population that is known to be normally distributed with σ=2. a. If the sample mean is determined to be 18.3, compute P-value. b. If the researcher decides to test this hypothesis at the a=0.05 level of significance, will the researcher rejec

    Higher Levels of Stress and Lower Levels of Confidence

    Can you help with this sample question and send the solution in a doc file so I can open it.... For this assignment, use the data This week, you will explore the hypothesis that higher levels of stress are associated with lower levels of confidence. Compute the correlation between the stress score and confidence scores

    Correlation: Age and Height Scenario

    Can you help me with this sample question, the required data is in the attached Excel document. For this assignment, determine whether there is a correlation between age and height. Move your output into a Microsoft Word document and write a 1- to 2-sentence, APA-formatted interpretation of the results.

    Working with Correlated Variables

    Determine whether the variable hours worked per week by an individual are correlated to the variable of the individual's satisfaction with his or her job. Be sure to use the proper df and show all the steps of the calculations. Also include an explanation of how the critical value was determined. Be sure to interpret the results

    Correlation: Happiness and Wealth

    You are interested in knowing whether wealthier people are happier. You collected data from fifty people about their incomes and their overall happiness levels on a scale of 1 to 10. Upon analyzing the results, you find that the correlation coefficient has a value of −0.25. On the basis of this data, respond to the following:

    The solution gives detailed steps on solving 5 statistical problems using normally distributed data such as finding confidence intervals, finding z-score and finding p-value. All formula and calculations are shown and explained.

    1. In a study designed to test the effectiveness of magnets for treating back pain, 40 patients were given a treatment with magnets and also a sham treatment without magnets. Pain was measured using a scale 0(no pain) to 100 (extreme pain). After given the magnet treatments, the 40 patients had pain scores with a mean of 10.0 an

    Compute the standard error of the sample mean.

    Question: Suppose N = 80000, n = 16000 and s = 50. a. Compute the standard error of the sample mean using the finite population correction factor. b. Repeat part a assuming n= 32000. c. Repeat part a assuming n = 80000. d. Compare parts a, b and c, and describe what happens to the standard error of the sample mean as n i

    Determining the Sampling Distribution

    Question: If you wish to estimate a population mean with a sampling distribution error SE = 0.28 using a 95% confidence interval and you know from prior sampling that sigma^2 is approximately equal to 5.4, how many observations would have to be included in your sample?

    Solve: 99% Confidence Interval

    7. The random sample shown below was selected from a normal distribution. 8, 3, 6, 10, 6, 3 Complete parts a and b. Construct a 99% confidence interval for the population mean. Round to two decimal places as needed. Assume that the sample mean and sample standard deviation remains exactly the same as those you just calc

    Chi-Square Tests and Nonparamatric Tests

    12.7) Some people enjoy the anticipation of an upcoming product or event and prefer to pay in advance and delay the actual consumption/delivery date. In other cases, people do not want a delay. An article in the Journal of Marketing Research reported on an experiment in which 50 individuals were told that they had just purchased

    Critical Values and Confidence Levels

    1. Do one of the following as appropriate. a) Find the critical value z_(a/2), b) find the critical value t_(a/2), c) State that neither the normal nor the t distribution applies. Confidence level 95%; n=20; Æ¡ is unknown; population appears to be normally distributed. 2. Given: The paired sample data of the age and alcohol co

    ANOVA Analysis Table

    Use the table below to answer the series of questions. Elaborate on your answers as to how you arrived at the solution. a) What is the sample size? b) Use the information and determine a Tukey simultaneous 95% confidence interval for italic mu subscript 1 - italic mu subscript 2. The mean and sample sizes for brand 1 an

    Political Affiliations, Critical Values, and Post Hoc Analysis

    Using the data attached, help with the following. Determine whether an individual's satisfaction with the economy differs across the various political affiliations, using the levels of Republican, Democrat, and others (e.g., Independents and Undeclared). Use the proper df and show all the steps of calculations. Explain

    Post Hoc Tests

    Consider the different post hoc tests discussed in the readings and respond to the following: Describe the general rationale behind using post hoc tests (i.e., when they are used and why). One of the advantages of using an ANOVA (compared to using t-tests) is also a disadvantage—using an ANOVA makes it necessary to use

    Using ANOVA in Statistical Analysis

    See the attached file for data. This week, you will explore the hypothesis that recall will vary as a function of stress levels. Conduct an ANOVA comparing participants' recall at Time 1 across all three stress-level conditions (low, medium, and high). Conduct post hoc tests if needed, using the Tukey method. Move y

    Statistics: One-way analysis of variance (ANOVA)

    Use data attached. Compute a one-way analysis of variance (ANOVA) to determine whether there are significant age differences across years in college (freshman, sophomores, juniors, and seniors). Report your results in APA format and write a short interpretation. Move your output into a 1-page Microsoft Word document and w

    Determining the Appropriate Sample Size

    For the binomial sample information summarized below, indicate whether the sample size is large enough to use the large sample approximation to construct a confidence interval for p. n = 50,^/p = 0.80 Is the sample large enough? Yes, or no and why?

    Call Center Data & Home Market Data

    I need quick help. I bought help for each of these problems on this site but have been unable to get help figuring out why there are no calculations in any of the cells, only numbers. The person who posted it was no help and I needed this today (Sunday 7/21). Additionally, there is no explanation for any of the outcomes, as p

    Political Affiliation Bias

    Part I: Determine whether an individual's political affiliation affects his or her overall satisfaction with the economy. For this assignment, use only subjects that declared themselves as Republicans or Democrats and leave out any subjects who declared themselves as Independents or Undecided. Analyze any potential difference

    Assessing Confidence Levels

    Can you help with this sample question? Choose and calculate the appropriate analysis to compare the confidence levels of participants given consistent feedback on car color and those given inconsistent feedback on car color (the variable name is type of information). Choose and calculate the appropriate analysis to compar

    Normal T and Binomial Distributions

    See the attached file. Assume that women's height are normally distributed with a mean given by =63.4 in, and a standard deviation given by =2.7in. If 1 woman is randomly selected, find the probability that her height is less than 64 in. If 46 women are randomly selected find the probability that they have a mean height les