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SeaFair Fashions relies on its sales force of 220 to do initial screening of all new fashions. The company is presently bringing out new line of swimwear and has invited 40 salespeople to its Orlando home office. An issue of the constant concern to SeaFair sales office is the volume of orders generated by each and every salesperson. Last year the entire company average was $417,330 with standard deviation of $45,285. a. What shape do you think the distribution of all possible sample means of 40 will have? Discuss. b. Determine the value of the standard deviation of the distribution of the sample mean of all possible samples of size 40. c. Determine the probability that the sample of 40 will have a sales average less than $400,000. d. How would the answer to part a, b, and c change if the home office brought 60 salespeople to Orlando? Provide the respective answers for this sample size. e. Each year SeaFair invites the sales personnel with sales above the 85th percentile to enjoy a complimentary vacation in Hawaii. Determine the smallest sales level for the sales personnel who were awarded a trip to Hawaii last year. (Assume the distribution of sales was normally distributed last year).
Which of the following formulas would you use to find the probability that a sample mean is larger than some given value? z = (x - µ) ÷ σ µ = ∑x ÷ N
Use these data to test the null hypothesis of no difference in the use of sick days between younger and older adults - What do your results indicate
1. a researcher studying the effects of environment on mood asks participants to sit alone in a waiting room for 15nbsp
Calculate and interpret a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women.
Determine the posterior probabilities, given the following prior and likelihood probabilities.Prior probabilities P(s1) = .25 P(s2) = .40 P(s3) = .35 Likelihood Probabilities
1. provide a clear statement of the research topic and the underlying relationship that you are modeling. identify the
question 1 let x yz denote i.i.d. random variables with exp distribution for lambda gt 0. find px lt y zquestion 2
a. Calculate the range and the standard deviation. (Use either definition for the range) b. Add 2 points to each score and compute the range and the standard deviation again. Describe how adding a constant to each score influences..
For this portion of the activity, you will export output you created while working in SPSS for Chapter 4 into a Word document. Please read the instructions below to ensure you are including the correct material in your document (This chapter ha..
On any given flight, an airline's goal is to fill the plane as much as possible without overbooking. If, on average, 10% of customers cancel their tickets, all independently of each other, what is the probability that a particular flight will be o..
Using the results you got from Question 3 and a level of significance at .05, what are the two-tailed critical values associated with each? Would the null hypothesis be rejected
Consider a sample of 148 small businesses. During a three-year period, 15 of 106 headed by men and 7 of the 42 headed by women failed. Let p1 be the proportion of businesses headed by women that failed. Let p2 be the proportion of businesse..
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