A physiologist wishes to study the effect of birth control pills on exercise capacity. Five female subjects who have never taken the pill have their maximal oxygen uptake measured during a treadmill session. The five subjects then take the pill for a specified length of time and their uptakes are measured again, as given below
For one consumer product the mean dollar sales per retail outlet last year in a sample of 15 was $3,425 with a standard deviation of $500. For a second product the mean dollar sales per outlet in a sample of 12 stores was $3,250 with a standard deviation of $375. The sales amounts per outlet are approximately normally distribu
For one consumer product the mean dollar sales per retail outlet last year in a sample of 15 was $3,425 with a standard deviation of $500. For a second product the mean dollar sales per outlet in a sample of 12 stores was $3,250 with a standard deviation of $375. The sales amounts per outlet are approximately normally distribu
The Engineering Department at Sims Software, Inc., recently developed two chemical solutions designed to increase the usable life of computer disks. A sample of disks treated with the first solution lasted 86, 78, 66, 83, 84, 81, 84, 109, 65, and 102 hours. Those treated with the second solution lasted 91, 71, 75, 76, 87,
I have posted this two times and paid two times ($50) and still have not received a summary. I need help summarizing the hypotheses of the attached Unit3 file. I am also attaching the Excel database the question references. Here is the question: In Unit 3 you tested 5 different hypotheses using the database from Unit
A supervisor and production specialist for a company wants to be sure that the 16 oz. can of worms it sells contains 16 ounces. The volume of the can doesn't allow for very much overfilling. A random sample of 49 cans of worms shows a sample mean of 15.1 ounces with a standard deviation of 0.2 ounces. Should production be stopp
1. How the use of Excel as a tool for interpreting data, can be used by a manager of an organization. 2. What potential legal and ethical issues could arise if the information gained in a survey is use to create an ideal profile of characteristics that a company looking for when hiring employees.
Problem 1) Identify each of the random variables as continuous or discrete. a) The number of cows in a pasture. b) The number of electrons in a molecule. c) The voltage on a power line. d) The volume of milk given by a cow per milking. e) The distance from Caper Canaveral to a point chosen at random in the Sea of
At the time she was hired as a server, Beth was told, "you can average more than $20 a day in tips." Over the first 35 days she was employed at the restaurant, the mean daily amount of her tips was $24.85, with a standard deviation of $3.24. At the .01 significance level, can Beth conclude that she is earning an average of mor
Please complete the following: 1.What do you do with the employees who experience equal intrinsic and extrinsic job satisfaction. 2. What is the required sample size if you need to estimate the number of workers in the United States who are highly satisfied with their job and you want the estimate to be within 2 percentag
(See attached file for full problem description) Answer questions in green. --- Answer these questions below (a, b, c, d, & e) about the case study: All case studies address the following points: a. define the problem statement b. define any and all assumptions made to address the case study c. analyze the data util
Hypothesis testing and t-tests 1. A researcher randomly assigns subjects with hypertension to one of three drug doses, then measures the heart rate of each group after administering the drug. The purpose of the study is to see what effect the drug has on heart rates. What are the independent variable(s) and dependent variable
Calorie Watchers has low-calorie breakfasts, lunches, and dinners. If you join the club, you receive two packages meals a day. CW claims that you can eat anything you want for the third meal and still lose at least five pounds the first month. Members of the club are weighed before commencing the program and again at the end of
The following hypotheses are given: Ho: Forty percent of the observations are in category A, 40 percent are in B, and 20 percent are in C H1: The observations are not as described in Ho We took a sample of 60, with the following results: Category Fo A 30 B 20 C
(The table is the student's t values generated by Minitab Version 9.2. Do not show sketches) --- Statistics Problems#1 Marketing: Shopping Time - How much customers buy is a direct result of how much time they spend in the store. A study of average shopping time in a large national house ware store gave the following info
The topic I am treating now is based on using qualitative analysis based on grounded theory to investigate the topic "Mature student studying at University". Please could you shed some light on how to go about writing a report on this, especially on Abstract, introduction, Methods result/discussion section .
(See attached file for full problem description) --- 1. Use the below data to compute the sample size required for the Automotive Industry 2. Describe the independent and dependent variables 3. Include final recommendations related to defining and explaining the problem and stating the hypotheses that will be tested ---
Show all work. State H0 and H1 where appropriate. (Use a 95% confidence level unless another level is specified.) Answers must be with reasons Exhibit T1: According to a 1992 survey, a 40% of the American population would support higher taxes to pay for health insurance. A state government is considering offering a health i
A medical board approved the average stay in the hospital for patients that have a particular operation as 6.0 days. However, the insurance company the claims that the average hospital stay for patients has been substantially longer than 6.0 days. To examine this claim a sample of 100 patients who had this operation in the last
This year 80 dealers were selected at random and telephoned regarding the new receiver. It was learned the 38% of the receivers had been sold. Since 38% is less that 40%, management wants to know if this means that immediate production cutbacks are needed or can this difference of 2 percentage points be attributed to sampling er
1. A new process has been implemented and it is stated to have an average cycle time of 120 seconds. A sample of 50 cycles yielded an average cycle time of 115 seconds, with a standard deviation of 2 seconds. A. Set up the null and alternative hypothesis B. Test your hypothesis using a level of significance of 0.05 A new proc
The owner of Maumee Motors wants to study the relationship between the ages of a car and its selling price. Listed on the attached worksheet is a random sample of 12 used cars sold at Maumee Motors during the last year. If we want to estimate selling price based on the age of the car, which variable is the dependent and whi
(See attached file for full problem description) --- Deb is the owner and manager of Deb's Specialty Coffees and Desserts, a small Oregon firm that roasts coffee beans and retails bulk beans to grocery stores, as well as desserts targeted to health conscious consumers. Deb is curious as to whether her new publicity campaign
What is the critical F value for a sample of six observations in the numerator and four in the denominator? Use a two-tailed test and the .10 significance level.
Ho: u = 50 H1: u not = 50 The sample mean is 49, and the sample size is 36. the population standard deviation is 5. Use the .05 significance level. a. Is this a one or two tailed test. b. What is the decision rule? c. What is the value of the test statistic? d. What is your decision regarding Ho? e. What is the p-value
A recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples
A sample of 100 observations from the first population indicated that x1 is 70. A sample of 150 observations from the second population revealed x2 to be 90. Use the .05 significance level to test the hypothesis.
As part of the quality control process, samples of parts are periodically taken for measurement to see if they conform to specifications. In one sample the diameter of a part is measured with the following results: x_m1 = 3.56 mm, σ_1 = 0.06 mm, n_1 = 20 A second sample is taken with the following results: x_m2 = 3
It is suspected that the rejection rate for a plastic-cup-molding machine is dependent on the temperature at which the cups are molded. A series of short tests is conducted to examine this hypothesis with the following results: Temperature Total Production Number Rejected T1 150
The Gibbs Baby Food Company wishes to compare the weight gain of infants using their brand versus their competitor's. A sample of 40 babies using the Gibbs products revealed a mean weight gain of 7.6 pounds in the first three months after birth. The standard deviation of the sample was 2.3 pounds. A sample of 55 babies using