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A firm has a current assets of $800,000, current liabilities of $600,000. The firm uses $200,000 of its cash balance to pay off a current liabilities. Calculate the current ratio before and after this transaction
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Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 85 drivers 60 were using their cell phones. a. Compute a 97% confidence interval for p, the true driver cell phone use rate. b. Give a practical interpretation of the...
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A study of n=50 hospital employees found that the number of latex gloves used per week by the sampled workers is summarized by x = 23.1 and s = 12.5. Let represent the mean number of latex gloves used per week by all hospital employees. Consider testing H0: = 27 vs Ha: <27 at a...
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In a study it was found that the average age of cable TV shoppers was 48 years. Suppose you want to test the null hypothesis, H0: =48, using a sample of n=70 cable shoppers a. Find the p-value of a two-tailed test if x=49.1 and s=6.8 b. Find the p-value of a an upper-tailed test if x=49.1 and...
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Suppose the score of architects on a partecular creativity test are normally distributed. What percetage of architects have a Z scores (A) above .10 (B) below 1.10, (C) above .20, (D) below .20 (E) above 1.10, (F) below 1.10 (G) above -.10, (H) below -.10.
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Young Professional Magazine
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A survey of 144 retail stores revealed that the average price of a DVD was $375 with a standard error of $20. Reference: Ref. 9-4 What is the 95% confidence interval to estimate the true cost of the DVD? a. $323.40 to $426.60 b. $328.40 to $421.60 c. $335.00 to...
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Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is = 128.5 and the standard deviation is = .4. a.Construct the x chart for this process if samples of size 6 are to be used. b.In the process in control for...
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How would the results of this survey be used in the workplace? Briefly describe correlational research. Name a variable from this study and one from the workplace that might prove to provide a correlational relationship and explain why you would choose these two? What did you learn about...
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To answer the following questions, please use statistical software like SPSS. Data can be found in attached excel sheet. 2. Super Markets, Inc. is considering expanding into the Scottsdale, Arizona area. You, as director of planning, must present an analysis of the proposed expansion to...
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- 1. A school administrator wonders if students whose first language is not English score differently on the math portion of the sat exam than students whose first language is English. The mean SAT math score of students whose first language is english is 516 on the basis of data obtained from the college board. A simple random sample of 20 students whose first language is not English result in a sample mean SAT math score of 522. SAT math score are normally distributed with a population standard deviation of 114. Why is it necessary for SAT math scores to be normally distributed to test the hypothesis?
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