Consider the following results for two samples randomly taken from two populations.
Sample A
Sample B
Sample Size20
25
Sample Mean28
22
Sample Standard Deviation5
6
?
a.Determine the degrees of freedom for the t distribution.b.At 95% confidence, what is the margin of error?c.Develop a 95% confidence interval for the difference between the two population means.
What will be an ideal response?
?
| a. | 42 |
| b. | 3.31 |
| c. | 2.69 to 9.31 |
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Phono Inc. has a benefits package that includes paid vacations and sick leave. The human resource manager proposes shifting this time into a bank of paid time off. What would be an advantage of this change?
A. Vacation and sick leave do not make economic sense. B. The company won't have to pay for the time the employees take off. C. Most companies offer this arrangement. D. The company won't have to set a schedule for holidays. E. Employees have more flexibility and privacy for their personal matters.
________ is a statistical procedure that attempts to account for nonresponse by assigning differential weights to the data depending on the response rates
A) Weighting B) Trend analysis C) Subjective estimates D) Imputation
Which of the following can receive and return multiple values?
A. Procedure B. Function C. Database trigger D. Package
Blogs use far more text than websites and typically allow for customer comments
Indicate whether the statement is true or false