A warehouse contains 5 parts made by the Stafford Company and 8 parts made by the Wilson Company. If an employee selects 3 of the parts from the warehouse at random, the probability that all 3 parts are from the Wilson Company is approximately .1958.
Indicate whether the statement is true or false
Q. 2The probability of a Type II error decreases as the true population value gets farther from the hypothesized population value, given that everything else is held constant.
Indicate whether the statement is true or false
Q. 3To calculate beta requires making a what if assumption about the true population parameter, where the what-if value is one that would cause the null hypothesis to be false.
Indicate whether the statement is true or false
Q. 4Explain what is meant by the concept of sampling distribution.
What will be an ideal response?
Q. 5An Internet service provider is interested in testing to see if there is a difference in the mean weekly connect time for users who come into the service through a dial-up line, DSL, or cable Internet.
To test this, the ISP has selected random samples from each category of user and recorded the connect time during a week period. The following data were collected:Dial Up DSL Cable19.2 40.6 39.517.7 40 42.317.2 41.5 4718.9 30.5 45.426.9 46.8 41.122.6 43.231.2 39.9 41.9 49.3Which of the following would be the correct alternative hypotheses for the test to be conducted?A) H0 : 1 = 2 = 3
B) H0 : 1 2 3
C) Not all population means are equal.
D) 1 = 2 = 3 = 4
Q. 6A warehouse contains 5 parts made by the Stafford Company and 8 parts made by the Wilson Company.
If an employee selects 3 of the parts from the warehouse at random, the probability that none of the 3 parts is from the Wilson Company is approximately .03496. Indicate whether the statement is true or false
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