COMPLETE PROBLEM 1: It is pretty common across most schools to find the grades at the MBA level divided between A's and B's. As such, you expect the mean GPA to be around 3.50. Using the sample of 200 MBA students, conduct a one-sample hypothesis test to determine if the mean graduate GPA is different from 3.50. Use a .05 signif
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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
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
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
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
At a college, two professors, Saber and Tooth, are each teaching large sections of introductory statistics with 500 students in each section. They decide to compare the results from their first exam. It would be too cumbersome to compare all 1000 students, so the decide to select a random sample of 50 students from each section.
1. Sandy's Pizza has generally assumed that the mean age of its customers was 30 years of age or younger. A random sample of 50 customers revealed the following: X-bar=30.76 years and s=3.6 years Does the sample data provide sufficient evidence to conclude that the mean age of Sandy's customers is greater than 30 years
Assume that an insurance survey is based on 1000 randomly selected United Kingdom housholds and that 640 of these housholeds spent money to buy life insurance in 1993. a) If p denotes the proportion of all U.K housholds that spent money to buy life insurance in 1993, set up the null and alternative hypotheses needed to attem
In hypothesis testing, the null hypothesis is tested and a decision is made as to whether to reject or not reject the null hypothesis. Then the conclusion must be stated in terms of the problem being studied. Determining the null and alternate hypotheses sometimes presents problems for students. This discussion activity will giv
a recent news report indicates that the mean (Ã?µ) number of years that first-time drug offenders are sentenced is 10.65. The sample of 31 court records from your county indicated a mean number of years = 12.22 with a standard deviation of 3.26. Assume you are working at the .05 level of significance A)State the appropriate n
See attached files. A researcher would like to determine whether humidity can have an effect on eating behavior. It is known that under regular circumstances, laboratory rats eat an average of µ = 10 grams of food each day. The researcher selects a random sample of n=15 rats and places them in a controlled atmosphere room
Your manager has speculated the following: a. the average (mean) annual income was less than $50,000, b. the true population proportion of customers who live in an urban area exceeds 40%, c. the average (mean) number of years lived in the current home is less than 13 years, d. the average (mean) credit balance for suburban c
See the attached file. 1. Recall that "very satisfied" customers give the XYZ-Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ-Box wishes to use the random sample of 65 satisfaction ratings to provide evidence supporting the claim that the mean composite satisfaction rating for the XY
Perform a 5 step hypothesis test on the given data for the following null and alternative hypothesis: Null Hypothesis - TB is greater in the U.S. than foreign countries between 1993-2009 Alternative Hypothesis - TB is less in the U.S. than in foreign countries between 1993-2009. See the attached files.
See the attached file.
Please provide a detailed description of the steps to complete the analysis in SPSS and what buttons to select. Please check the work that has already been done for 2010 and note any changes or improvements you find necessary to improve the model.
1. We ask if the attitudes toward fuel cost of 100 owners are hybrid electric cars (X=76) are different from those on a national survey of owners of non-hybrid cars (µ=65, s=24). Higher scores indicate a more positive attitude. A) Is this a one or two tailed test? B) In words what is the H0 and Ha? C) Perform the z-test.
1. In a population of typical college students, µ=75 on a statistics final exam (σx=6.4). For 25 students who studied statistics using a new technique, X=72.1. Using two tails of the sampling distribution and the .05 criterion: A.) what is the critical value? B.) Is this sample in the region of rejection? How do you know? C.)
We ask whether a private school leads to higher or lower performance on a test of social skills. A sample of 100 students from a private school produces a mean of 71.30 on the test, and the national mean for students from public schools is 75.62 (? x= 28.0). a) Should we use a one-tailed or a two-tailed test? Why? b) What are
The admissions officer of TopNotch University wants to know the relationship between the high school GPAs and college GPAs for the 15 merit scholars in this yearâ??s freshman class. Here are the data: Student High School GPA College GPA 1 3.6
A large furniture store stations salespeople near its entrance to greet customers and offer assistance in shopping. The salespeople, who work on a commission basis, tell the customers their name and hand them a business card. A psychologist thinks that the salespersons' intrusiveness might cause customers to buy less furniture r
1. An LU professor is interested in whether there is a difference between undergraduate students and graduate students in the amount of time spent praying each day. The professor gathers information from random samples of undergraduate and graduate students on the LU campus. The amount of time praying is normally distributed an
Using AIUââ?¬â?¢s survey responses from the AIU data set, complete the following requirements in the form of a report: TEST #1 Perform the following two-tailed hypothesis test, using a .05 significance level: ââ?¬¢ Intrinsic by Gender ââ?¬¢ State the null and an alternate statement for the test ââ?¬¢ Use
See attachment. Please provide assistance in understanding how to work statistics problems. I need step by step details of how work was done in words of interpretation and in EXCEL so that I can understand these types of problems in future problems. When using Excel please indicated formulas used, thank you. I have
** Please see the attached file ** I need assistance in understanding how to work statistics problems. I need help to specify the Null and Alternative Hypothesis (at least 350 words) based on the Population 1 and 2 in Excel spreadsheet that I have attached. I need step by step details (Null and Alternative Hypothesis
Do cultural dimensions correlate with purchase decisions? In this report, you will set out to address this question. Using the SPSS spreadsheet you submitted last week, you will create an empirical journal article, much like the one you critiqued as your Unit 3 Individual Project. THE REPORT: 1.Provide a general research
Interrupting Data Using the survey responses from the data set below, answer the following questions and include the Excel charts. KEY TO SURVEY Demographics Gender
1. A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress with a severe storm class rating. Let us say that we want to set up a statistical test to see if the wave action (i.e., height) is dying down or getting worse. If you wanted to test the hypothesis t
Use the attached files. TEST #1 Perform the following two-tailed hypothesis test, using a .05 significance level: Intrinsic by Gender State the null and an alternate statement for the test Use Microsoft Excel (Data Analysis Tools) to process your data and run the appropriate test. Copy and paste the results of the o