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A business school claims that the average income of graduates of this school three years after graduation is $700.
a. If the claim is correct and if incomes are normally distributed with a standard deviation of $60, what is the probability that 36 randomly selected graduates have an average income of less than $675?
b. If a random sample of 36 graduates had an average weekly income of $675, what would you conclude about the validity of the claim?
a television network has eight 60-minute time slots for dramas and has 15 shows to choose from for the fall lineup. How many different lineups are possible?
If we graph this data with Total Cost on the Y axis (Vertical axis) and the Quantity Produced on the X axis (Horizontal axis) what do you think will be the shape of the line
Suppose that Ford's performance scores really are Normally distributed. This year, managers with scores less than 31 received C's and those with scores above 595 received A's. What are the mean and standard deviation of the scores?
Find the mean, median, standard deviation, variance and range.(Use correct notation, you don't have to show work)
A consulting engineer's time is billed at $30 per hour, and her assistant's is billed at $20 per hour. A customer received a bill for $715 for a certain job. If the assistant worked 3 hours less than the engineer, how much time did each bill on th..
Find the resultant (sum) of the complex numbers. Express in rectangular form
Complement of Events, Guessing. How do I setup a Guessing problem?, Six popular brands of cola are to be used in a blind taste study for consumer recognition.
A swimming pool is circular with a 20-ft diameter. The depth is constant along east-west lines and increases linearly from 4 ft at the south end to 9 ft at the north end. Find the volume of water in the pool. (Round the answer to the nearest whole..
one pound of bananas cost 4.09 per pound. what is the unit cost for the bananas?
73 students study all three. Can you determine how many students there are in the math department? The answer is well below 814.
Show the Finite graph and vertices
Adams High School has 171 freshman, 189 sophomores, 212 juniors, and 238 seniors. If two students are selected at random without replacement, what is the probability of selecting a freshman on the first selection and a senior on the second selecti..
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