5. A machine is set to fill the small-size packages of M&M candies with 56 candies per bag. A sample revealed three bags of 56, two bags of 57, one bag of 55, and two bags of 58. To test the hypothesis that the mean candies per bag is 56, how many degrees of freedom are there?
6. large department store examined a sample of the 18 credit card sales and recorded the amounts charged for each of three types of credit cards: MasterCard, Visa, and Discover. Six MasterCard sales, seven Visa, and five Discover sales were recorded. The store used an ANOVA to test if the mean sales for each credit card were equal. What are the degrees of freedom for the F statistic?
3 in the numerator, 18 in the denominator
6 in the numerator, 15 in the denominator
2 in the numerator, 15 in the denominator
18 in the numerator, 3 in the denominator
A random sample of 20 items is selected from a population. When computing a confidence interval for the population mean, what number of degrees of freedom should be used to determine the appropriate t-value?
9n experimental study is one that _____.
attempts to reveal why or how one variable produces changes in another
attempts to capture a population’s characteristics by making inferences from a sample’s characteristics and testing resulting hypotheses
discovers answers to the questions who, what, when, where, or how much
involves manipulation of one or more variables to determine the effect on another variable
A random sample of size 15 is selected from a normal population. The population standard deviation is unknown. Assume the null hypothesis indicates a two-tailed test and the researcher decided to use the 0.10 significance level. For what values of t will the null hypothesis not be rejected?
To the left of -1.282 or to the right of 1.282
To the left of -1.645 or to the right of 1.645
To the left of -1.345 or to the right of 1.345
Between -1.761 and 1.761
Bones Brothers & Associates prepare individual tax returns. Over prior years, Bones Brothers has maintained careful records regarding the time to prepare a return. The mean time to prepare a return is 90 minutes and the standard deviation of this distribution is 14 minutes. Suppose 100 returns from this year are selected and analyzed regarding the preparation time. What assumption do you need to make about the shape of the population distribution of all possible tax preparation times to make inferences about the mean time to complete a tax form?
The population distribution is skewed to the right.
The population distribution is skewed to the left.
The population distribution is normal.
The shape of the population distribution does not matter.
If an ANOVA test is conducted and the null hypothesis is rejected, what does this indicate?
The population means are equal.
At least one pair of population means is different.
The p-value is less than a.
All population means are different.
14Which of the following is most appropriately displayed with a frequency table?
How much explanatory value comes from the study’s variables
The home location of the most valuable customers
What percentage of people prefer Hunt’s brand ketchup
The relationship between gender and job performance
15 The monthly salaries of a sample of 100 employees were rounded to the nearest $10. They ranged from a low of $1,040 to a high of $1,720. If we want to condense the data into seven classes, what is the most convenient class interval?
We value our customers and so we ensure that what we do is 100% original..
With us you are guaranteed of quality work done by our qualified experts.Your information and everything that you do with us is kept completely confidential.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
The Product ordered is guaranteed to be original. Orders are checked by the most advanced anti-plagiarism software in the market to assure that the Product is 100% original. The Company has a zero tolerance policy for plagiarism.Read more
The Free Revision policy is a courtesy service that the Company provides to help ensure Customer’s total satisfaction with the completed Order. To receive free revision the Company requires that the Customer provide the request within fourteen (14) days from the first completion date and within a period of thirty (30) days for dissertations.Read more
The Company is committed to protect the privacy of the Customer and it will never resell or share any of Customer’s personal information, including credit card data, with any third party. All the online transactions are processed through the secure and reliable online payment systems.Read more
By placing an order with us, you agree to the service we provide. We will endear to do all that it takes to deliver a comprehensive paper as per your requirements. We also count on your cooperation to ensure that we deliver on this mandate.Read more