Periodically, Merrill Lynch customers are asked to evaluate company's financial consultants and service.
Please see the file attached. Show all work solve in excel only.
Please see the file attached. Show all work solve in excel only.
You are the Vice President for Human Resources at XYZ Investment Management, Inc. Your employees have recently complained about their long working hours. You collected a sample of 25 weekly time sheets and calculated an average of 41.5 hours with a standard deviation of 2.5 hours. Over lunch, you discuss this problem with you
Consider the Baseline BMI values and the 12-month BMI values in the treatment group in the Excel data set. Investigators are interested in: "Did the intervention have an effect on BMI in the treatment group? Is the average BMI before treatment equal to the average BMI after treatment?" Using the data provided in the Exc
The owner of Maumee Ford-Mercury wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year. Car Age (years) Selling Price ($000) Car Age (years) Selling Price ($000) 1 9 8.1 7 8 7.6 2 7 6.0 8 1
Do you view the major media and/or the presidential political candidates the same as before taking statistics?
Do a complete hypothesis test on the attached problem, including hypothesis, decision rule, calculations of the statistic, decision, interpretation, and p- value. Assume Equal Variances at (alpha) = .025 (using excel) A certain company will purchase the house of any employee who is transferred out of state and will handl
Please see the attached file for full problem description. 1. If standard deviation (sigma) is unknown when completing a hypothesis test about the population mean, then the best estimate for the unknown standard deviation is s. _____ T/F 2. The chi-square distribution is used for inferences about the population mea
I am looking at this problem that suggests that people will follow a 24 hour cycle of sleeping and waking even if they are not exposed to the usual pattern of sunlight. Their cycles at the end of the study were 25, 27, 25, 23, 24, 25, 26, and 25. If we use the 5% level of significance what would we conclude about the theor
Ho:u1-u2 = 0 Ha:u1-u2 does not equal 0 The following results are for two independent samples taken from the two populations. Sample 1 N1 = 80 x1 = 104 o1 = 8.4 Sample 2 N2 = 70 x2 = 106 o2 = 7.6 1. What is the value of the test statistic? 2. What is the p-value 3. With a=.05, what is your co
1. Consider the following hypothesis test: Ho:u1-u2 = 0 Ha:u1-u2 does not equal 0 The following results are for two independent samples taken from the two populations. Sample 1 N1 = 80 x1 = 104 o1 = 8.4 Sample 2 N2 = 70 x2 = 106 o2 = 7.6 1. What is the value of the test statistic? 2. What is the p-valu
Dear OTA, Please help me with the attached problems with steps. Thanks 1) The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute. The quality-assurance department found in a sample of 50 customers at the
1) The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds. 1. What is the value of the population mean? What is the best estimate of this value? 2. Explain why we need to use t
You are the Vice President for Human Resources at XYZ Investment Management, Inc. Your employees have recently complained about their long working hours. You collected a sample of 49 weekly timesheets and calculated an average of 41.5 hours with a standard deviation of 2.5 hours. Using a significance level of 0.01, can you
I need to complete the following - please help me so I can expand on your ideas: Complete and submit a 1000-word report describing the methodology involved in Hypothesis testing. It is required that you include an example of a business situation in which hypothesis testing can utilized.
You conduct a survey of a sample of 25 members of this year's graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this year's students significantly different from the long-run average? At what alpha l
10.2 Find the sample proportions and test statistic for equal proportions. Is the decision close? Find the p-value. a. Dissatisfied workers in two companies: x1 = 40, n1 = 100, x2 = 30, n2 = 100, α = .05, two tailed test. b. Rooms rented at least a week in advance at two hotels: x1 = 24, n1 = 200, x2 = 12, n2 = 50, α
Please do # 2, 3 and 5. 2. In a 2-week study of the productivity of workers, the following data were obtained on the total number of acceptable pieces: 65 36 49 84 79 56 28 43 67 36 43 78 37 40 68 72 55 62 22 82 88 50 60 56 57 46 39 57 73 65 59 48 76 74 70 51 40 75 56 45 35 62 52 63 32 80 64 53 74 34 76 60 48 55 51 54
The following regression results relate to a study of the salaries of public school teachers in Midwestern city. Variable coefficient standard error t-ratio Constant 20,720 6,820 3.04 EXP 805 258 3.12 R -squared = 0.684, n=105, s
The analyze results of two instruments A & B, show the following data: Instrument A : Mean = 14.2, Std Dev = 1.4, N = 250 Instrument B : Mean = 13.0, Std Dev = 0.8, N = 200 Significance Level = .05 Calculate the p value.
Given the following data, how do I calculate the p-value using two sample groups in my hypothesis testing. Please show the steps involved. In a sample of 210 men, 35 prefer sugar free soft drinks. In a sample of 220 women, 42 prefer sugar free soft drinks. Using a significance level of 0.05, test whether women prefer sugar fr
Problem #4 Historically, the Giant's opening home game has been on a Sunday with an average crowd of 60,000. During the last 5 years, they have opened on Saturday with an average crowd of 58,000. Allowing a 2,5% error of type 1, formally test the hypothesis that opening on Saturday has dampened attendees. S =S/vn=1000 Su
A manager of a sporting goods store claims that the average age of customers who buy a certain product is 25. A random sample of 55 customers had an average age of 25.6. At a significance level of 1%, should this claim be rejected? Assume sigma = 1.25.
1. Five cruise missiles have been built by an aerospace company. The probability of a successful firing is, on any test, 0.95. Assuming independent firings, what is the probability that the first failure occurs on the fifth firing? 2. A lot of 25 color television tubes is subjected to an acceptance testing procedure. The p
A researcher is asked to determine the likelihood that a new medication for arthritis works better than a similar medication that's been around for a decade. How would the researcher approach this assignment? State a possible research hypothesis in the space below. Frame it as specifically as possible, in a testable way (so
Prepare answers to the following assignments from Chapter 11 of the Doane & Seward e-text: Use the data from Exercise 11.1 on page 449 then test the hypothesis that the treatment means are equal at the 0.05 significance level and (a) State the null hypothesis and alternate hypothesis, (b) What is the decision rule? (c) Comput
Please see attachment for problems I am struggling with. Thanks in advance for help provided. Multinomial Experiments #11 Randomly selected deaths from car crashes were obtained and the results are included in the table below. Use a 0.05 significance level to test the claim that car crash fatalities occur with equal fr
The manager of a software company wishes to study the number of hours senior executives spend at their computers by type of industry. The manager chooses five executives from three different industries. At the .05 level of significance, what should be concluded that the amount of time spent is different? Senior Executives
Provide examples regarding how to set up a "Null Hypothesis" and the "Alternate Hypothesis." This is based on ideas of the meaning of the tests and how this may be used in an exercise.
How can I set up One - Population" 1. State a relevant and useful "One - Population" hypothesis both in Words and statistical language for each population (minimum of 3) 2. Perform the 5 step hypothesis testing procedure 3. Present your calculations and results 4. Make all possible observations and inte
Part 1: Prepare a paper discussing "Hypothesis Testing" using your ideas of the meaning of the tests and how this may be used in an exercise. Discuss the "Null Hypothesis" and the "Alternate Hypothesis" and describe how to set up a "Null Hypothesis" and an "Alternate Hypothesis. Part 2: Using Baseball data attached,comput