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1. The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is$ 200.000, find each worker's salary
2. Including a 6.1% sales tax, a diamond ring sold for $ 2,864.70. Find the price of the ring before the tax was added.( round to the nearest cent).
3.Judy has a rectangular garden 10 by 30 feet. She wants to put a grass border around the garden with a uniform width on all sides. If she has enough grass seed to cover 384 square feet, how wide can the grass border be?
4. An auto repair shop charged a customer $424.00 to repair a car. THE BILL LISTED $74 for parts and the remainder for labor. If the cost of labor is $35 per hour , hoe many hours of labor did it take to repair the car?
Agricultural researchers are studying three different ways of planting peanuts to determine whether significantly different levels of production yield will result.
Do the data indicate that the sleeping pill is effective at a 1% level of significance?
A monthly report to the Texas Department of Health, division of Water Hygiene, contained the following water production data in thousands of gallons:
An investment counselor would like to meet with 12 of his clients on Monday, but he has time for only 8 appointments. How many different combinations of the clients could be considered for inclusion into his limited schedule for that day?
You want to determine if your widgets from machine 1 are the same as machine 2. Machine 1 has a sample mean of 50 and a population standard deviation of 5 and a sample size of 25.
State the alternative hypothesis in statistical terms. Define the critical region by drawing the distribution and labeling the z-critical value.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
State a question that can be answered in a "binomial" manner, such as Do you normally read the front page of a newspaper at least 4 times a week?
To evaluate average annual expenses of students on books and class materials sample size 36 is taken.
Provide an example from your work or home life; illustrate the difference between the application of descriptive statistics and inferential statistics.
A large population of overdue bills has balances that follow a normal curve. When we take a sample of 100 of these the average is $500 and the SD is $100.
Do you think this statement has any merit? Why or why not? Explain why the manager may have said it and then further substantiate his argument or compose a rebuttal.
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