Note: this homework is a make-up and cannot hurt your point total.  There is no practice

homework for this one since it comes primarily from questions that you saw in previous homework questions.  There are some questions relating to multiple regression and you may need to consult your book to find those answers but there are no calculations required for questions concerning multiple regression.Q: In multiple regression there is more than one independent variable. True False

1 points   

QUESTION 2

1. In multiple regression there is more than one dependent variable. True False

1 points   

QUESTION 3

1. In multiple regression multicolinearity is a potential problem. True False

1 points   

QUESTION 4

1. In multiple regression the value of R square increases when adding another independent variable. True False

1 points   

QUESTION 5

1. When the confidence coefficient is .75, alpha is 

1 points   

QUESTION 6

1. If there are 34 observations then how many degrees of freedom are there for the t distribution (for a sample mean)?

1 points   

QUESTION 7

1. Given a specified level of significance the absolute value of the critical value will be smaller for a one-tailed test than for a two-tailed test. True False

1 points   

QUESTION 8

1. The p-value is1 minus the power of a test.the exact or observed level of significance.the probability of a Type II error.the same as the critical value.

1 points   

QUESTION 9

1. A Type I error is when we fail to reject the null hypothesis even though it is false. True False

1 points   

QUESTION 10

1. Consider the ANOVA table here.  What is MSTR?  Answer to two decimal places.

1 points   

QUESTION 11

1. Consider the ANOVA table here.  What is the p-value?  Answer to three decimal places.

1 points   

QUESTION 12

1. Below is a table constructed using a subset of data from an ECN221 class.  What is the probability that an observation in this data set is from an accountancy major?  Answer to 3 decimal places.

1 points   

QUESTION 13

1. Below is a table constructed using a subset of data from an ECN221 class.  What is the probability that an observation in this data set is from an “Other: business” major?  Answer to 3 decimal places.

2 points   

QUESTION 14

1. The probability of a getting a new sales contract with any given client is .24.  A sales representative works with 14 clients this week.  What is the expected number of contracts the sales representative will get this week? (Answer to the second decimal place.)

2 points   

QUESTION 15

1. A telemarketer will make 25 calls in one hour.  The probability of making a sale on any given call is .09.  What is the probability that he will make at least one sale during the hour? (Answer to the third decimal place.)

2 points   

QUESTION 16

1. The vice president of the fraud department has 21 employees that report to her.  During a holiday period she must make work assignments to ensure that someone is on call each day.  There are five days that she must cover and she will assign no one to more than one day.  How many different combinations of workers assigned for the holiday week are possible?

2 points   

QUESTION 17

1. Using the Poisson PMF, when the mean is 6, what is P(X=9)? (Answer to the third decimal place).

2 points   

QUESTION 18

1. An Italian restaurant advertises that carryout orders take about 24 minutes.  Assume that the time it takes for an order to be ready follows the exponential distribution with a mean of 24.  What is the probability that an order will be ready within 18 minutes?  Answer to three decimal places if needed.

2 points   

QUESTION 19

1. For the normal distribution the mean and variance arethe same.unrelated.related by the square root function.related by the normal pdf.

2 points   

QUESTION 20

1. Suppose that the auto loans from a bank are normally distributed with a mean of $23,334 and a standard deviation of 3,412.  What is the probability that a randomly selected loan will be for more than $23,334? Answer to three decimal places if necessary.

 

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