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-1000 tickets for prizes are sold for $2 each. Seven prizes will be awarded - one for $400, one for $200, and five for $50. Steven purchases one of the tickets.
a) Find the expected value
b) Find the fair price of the ticket.
-During the last hour, a telemarketer dialed 20 numbers and reached 4 busy signals, 3 answering machines, and 13 people. Use this information to determine the empirical probability that the next call will be answered in person.
Using the .05 significance level, can we conclude that there is a positive association between the two variables?
What will be measurable data in this case and (assume a survey will be conducted and or data can be obtain). What will be at least two independent variables and one dependent variable. (and assuming they are consistent with the collected data)
You read that statistical test at α=0.01 level has probability 0.14 of making a Type II error when specific alternative is true. Calculate the power of test against this alternative?
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
Which of following statements would be right concerning a twotail test at 0.05 level of significance? We can conclude that average cottage cheese consumption in America is at least 0.705 pound more or less than 2.75 pounds per person per year.
In a sample of 1,000 representing a survey from the entire population, 650 people were from Laketown, and the rest of the people were from River City.
A television station estimates that 50% of college students watch the super bowl. For a sample of 120 students selected at random, what is the mean and variance of the number of students who watch the game?
A medical research project examined the relationship between the subject's weight and recovery time from surgical procedure, as shown in the table below.
At the .01 significance level, is there a difference in the use of the four entrances?
Smith Software Inc. is a computer software firm that has grown in size in recent years. To assist in its planning for future growth, you are to determine the trend of the number of accounts based upon the below.
If statistically significant, do you think the difference is large enough to be important?
What was the probability that a student worked a part time job or made the Dean's list. Interpret the results.
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