Number of results: 1,107
Please Help! My book and instructor are no help. Please help me understand why I need to make a scatter diagram, when dealing with bivariate data, and how to find SS(x), SS(y), SS(xy), and r. I have all the formulas, but don't understand. Thanks! I dont know that the diagram ...
Tuesday, August 30, 2005 at 9:45pm by Rebecca
Suppose the marginal propensity to consume is 0.75. What does this mean? What do we know about the marginal propensity to save? What do we know about the average propensity to consume? The marginal propensity to consume (MPS) the percent of an additional amount of income that ...
Wednesday, September 20, 2006 at 5:50pm by hadi
Your aunt lends you 175 dollars to buy a guitar she will decrease the amount you owe bye 25 dollars for each day you help her bye doing odd jobs. Write a verbal model that you can use to find the decrease in the amount you owe your aunt depending on the number of days you help...
Sunday, September 24, 2006 at 6:10pm by Elizabeth R.
Suppose that the number of insects captured in a trap on different nights is normally distributed with mean 2950 and standard deviation 550. a) What is the probability of capturing between 2500 and 3500 insects? b) Suppose that we change the location of a trap whenever it ...
Monday, November 6, 2006 at 7:21pm by Lindz
Math -- Statistic types used in public speaking
This is actually in my communications class. I have to decide which is the best statistic type is best to use in my speech. (mean, median or mode) I am struggling to decide which statistic would be used to support the following assertions? Louisiana’s educational system has ...
Saturday, October 6, 2007 at 7:25pm by Regina
A restaurant that bills its house account monthly is concerned that the average monthly bill exceeds $200 per account. A random sample of twelve accounts is selected, resulting in the sample mean of $220 and a sample standard deviation of $12. The researchers have determined ...
Monday, October 20, 2008 at 12:22am by Marilyn
If we have a sample of 12 drawn from a normal population, then we would use as our test statistic A) z0 with 11 degrees of freedom B) t0 with 12 degrees of freedom C) z0 with 12 degrees of freedom D) t0 with 11 degrees of freedom
Saturday, December 5, 2009 at 8:35pm by jason
TABLE 12-6 The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day. He is particularly interested in seeing if there is a difference in this proportion for accounting and economics majors. In a random sample of...
Sunday, October 24, 2010 at 2:15am by NDW
TABLE 12-3 A computer used by a 24-hour banking service is supposed to randomly assign each transaction to one of 5 memory locations. A check at the end of a day's transactions gave the counts shown in the table to each of the 5 memory locations, along with the number of ...
Sunday, October 24, 2010 at 2:24am by WMD
Using this TABLE 12-6 for the following questions: The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day. He is particularly interested in seeing if there is a difference in this proportion for accounting and...
Sunday, October 24, 2010 at 1:00pm by Anonymous
how a t Test can be employed in hypothesis testing by the use of directional vs. nondirectional hypotheses. Discuss types of research where using the t statistic may be an appropriate alternative to using a z-score. Respond to at least two of your fellow students’ postings.
Wednesday, December 15, 2010 at 12:41am by smith
how a t Test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students. Why would this t Test be preferred to using another test statistic?
Wednesday, December 15, 2010 at 12:42am by smith
Statistic Question: I want to first start out by thanking you for your help and I also want to inform you that I do not have a strong Math back ground and is taking an Accelerated program that included this class of which I do not understand a word of so I really need help ...
Thursday, February 3, 2011 at 4:58pm by Tammy
You can probably use a one-sample proportional test for your data. (Test sample proportion = 20/55 or .36) Find the appropriate table for your critical value at .10 level of significance for a one-tailed test. Compare the test statistic you calculate to the critical value from...
Tuesday, August 2, 2011 at 12:40am by MathGuru
I am supposed to find the SD from the SE for the last two main effects. What I have so far is Verbal (M = 36.34, SD =___ ),(M = 44.02, SD = __), score averaged across grades 3 and 5 lower for AC schools (M = 36.25, SD =__ ) than for non AC schools (M = 44.12, SD = __). The ...
Wednesday, September 14, 2011 at 3:55pm by Debi
You can use a one-sample proportional z-test for your data. (Test sample proportion = 39/90 and sample size = 90) Convert fractions to decimals to use in the z-test. Find the critical value in the appropriate table at .05 level of significance for a two-tailed test. Compare ...
Monday, July 9, 2012 at 10:41pm by MathGuru
a restaurant that bills its house account monthly is concerned that the average monthly bill exceeds $200 per account. A random sample of twelve account is selected, resulting in a sample mean of $220 and a standard deviation of $12. Use a= 0.05. what is the critical value for...
Tuesday, December 11, 2012 at 1:28am by HN
1. I took a sample of the grade point averages for students in my class. For 25 students, the standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the sample was: (3 marks) 2. The heights (in inches) of adult males in Bhutan are believed ...
Sunday, August 11, 2013 at 3:00am by CHIMI
In a population of over 15,000 patients, the distribution of systolic blood pressure follows the normal curve. Investigators believe the average systolic blood pressure in the population is 120 mm. The investigators take a simple random sample of 6 patients from this ...
Saturday, August 24, 2013 at 6:49pm by Anonymous
For a two-tailed hypothesis test, the test statistic is z = 1.42. What is the p-value?
Tuesday, October 29, 2013 at 9:17pm by Anonymous