1. The distribution of the grades of the 1st Assignment in the class of Statistics is shown below: [The calculations and the graph for this exercise must be done on Excel. As soon as you get the data on class intervals and frequencies that are shown below, you will create a table on Excel with the necessary detailed column c
#1- Indicate and defend which measures of central tendency and variability you think is most appropriate for these data: 3,5,3,2,8,4,6,7,1,4,3,2 #2- Calculate the semi-interquartile range for these data and indicate which measure of central tendency and variability would provide the best description of these data: 24,16
Can you explain this to me and give me an example of associations among variables?
Please complete the following: A. Identify the population and the sample: A survey of 787 small-business managers found that 72% are optimistic about the future of their company. b. Determine whether the numerical value describes a parameter or a statistic: 19% of a sample of Indiana 9th graders surveyed smoked cigarettes
I have to make value labels of a data set that is from a PDF file. I have to do this in SPSS, except I have no clue how to import the data into SPSS from a PDF file. I tried copy and pasting, but I can't just highlight and copy one column at a time. It makes me highlight the entire document. There's gotta be some easier way
A random sample of 41 basketball players from The Official NBA Basketball Encyclopedia gave the sample standard deviation for player height as s=3.32 inches. How many more players from this encyclopedia should be included in the sample to be 99% sure that the sample mean is within 0.50 inches of the population mean of all player
What is the probability to roll 2 sevens with 2 dice on two consecutive rolls? Note: to roll a 7, you need 2 dice and will roll 2 dice 2 times to get 2 sevens. _________________________________________________________________________________________________________________ Going fishing in a lake with bass weighing an avera
There is interaction between two factors if the effect of one of the factors changes for different categories of the other factor. True False Impossible to determine
PART ONE - 1. Arcs in a project network indicate a. completion times. b. precedence relationships. c. activities. d. the critical path. 2. The critical path a. is any path that goes from the starting node to the completion node. b. is a combination of all paths. c. is the shortest path. d. is the longest p
(See attached file for full problem description) only the first 3 problems: 187. The store policy is that items not sold in one month are reduced 10% in price. Product X costs you $30.00 when you purchase 50. During the first month you sell 20 units of product X at $50.00; the remaining 30 are sold in the second month. What i
You are applying for a job at two companies. Company A offers starting salaries with mean = $37,000 and standard deviation = $11,000. Company B offers starting salaries with mean = $37,000 and standard deviation = $8,000. For which company would you be more likely to get a starting salary of $56000?
Chapter 1, Exercise 2, p 14 What is the level of measurement for these items related to the newspaper business? a. The number of papers sold each Sunday during 2004. b. The departments, such as editorial, advertising, sports, etc. c. A summary of the number of papers sold by county. d. The number of years with the pa
A local newspaper has 10 delivery boys who each deliver the morning newspaper to 50 customers every day. The owner decides to record the percentage of papers delivered on time for a 10-day period and construct a p chart to see whether the percentage is too erratic. Day Percentage of Papers Delivered on Time 1 91.6 2 89.4 3
Blossom's Flowers purchases roses for sale for Valentine's Day. The roses are purchased for $10 a dozen and are sold for $20 a dozen. Any roses not sold on Valentine's Day can be sold for $5 per dozen. The owner will purchase 1 of 3 amounts of roses for Valentine's Day: 100, 200, or 400 dozen roses. The number of alternatives
A tabular presentation that shows the outcome for each decision alternative under the various states of nature is called a : A. payback period matrix B. decision matrix C. decision tree D. payoff table
Please see the attached file for my question on statistics of a set of exam scores.
Demand for a popular athletic shoe is nearly constant at 800 pairs per week for a regional division of a national retailer. The cost per pair is $54. It costs $72 to place an order, and annual holding costs are charged at 22% of the cost per unit. The lead time is two weeks. a. What is the EOQ? b. What is the reorde
Please provide an illustration of the network for this problem. Min 2XAX + 3XAY + 5XAZ+ 9XBX + 12XBY + 10XBZ s.t. XAX + XAY + XAZ < 500 XBX + XBY + XBZ < 400 XAX + XBX = 300 XAY + XBY = 300 XAZ + XBZ = 300 Xij > 0 TOPIC: Transportation problem (1 pt)
Which of the following is most likely a parameter as opposed to a statistic? A. The average score of the first five students completing an assignment B. The proportion of females registered to vote in a country C. The average height of people randomly selected from a database D. The proportion of trucks stopped yesterday t
Your next door neighbor, Scott Jansen, has a 12-year old daughter, and he wants to pay the tuition for her first year of college 6 years from now. The tuition for the first year will be $17,500. Scott has gone through his budget and finds that he can invest $200 per month for the next 6 years. Scott has opened accounts at two mu
In a recent national survey, the mean weekly allowance for a nine-year-old child from his or her parents was reported to be $3.65. A random sample of 45 nine-year-olds in northwestern Ohio revealed the mean allowance to be $3.69 with a standard deviation of .24. At the .05 level of significance, is there a difference in the me
1. Identify the type of measurement scale?nominal, ordinal, interval, or ratio?suggested by each statement: a. John finished the math test in 35 minutes, whereas Jack finished the same test in 25 minutes. b. Jack speaks French, but John does not. c. Jack is taller than John. d. Jack is twice as heavy as John. e. Jo
To find mean, range, standard deviation. See attached files for full problem description.
Coin-operated coffee machines made by BIG Corporation was designed to discharge a mean of eight ounces of coffee per cup. If it dispenses more that that on average, the corporation may lose money, and if it dispenses less, the customers may complain. BIG Corporation would like to estimate the mean amount of coffee, dispensed
I. What level of data? Question: If statisticians were planning a study on the levels of measurement, how would they identify numbers associated with the example below? (a)scores on a teacher-prepared math test __________________________ (b)scores on a commercially prepared standardized reading test_____________ (c)
The annual commissions earned by sales representatives of Machine Products, Inc. a manufacturer of light machinery, follow the normal distribution. The mean yearly amount earned is $40,000 and the standard deviation is $5,000. a. What percent of the sales representatives earn more than $42,000 per year? b. What percent of th
How do I calculate the answer to: 12!
1. The Herfindahl-Hirschman (HH) Index is used to a) measure the degree of market concentration in an industry. b) measure the extent of price leadership. c) measure the degree of nonprice competition. d) None of the above. 2. Which of the following conditions would definitely cause a perfectly competitive company to shut
The mean value of land and building from a sample of farms was $ 2480 with a standard deviation of $ 360. Between what two values do about 99.7% of the data lie? Use the Empirical Rule. (Assume the data set has a bell-shaped distribution.) In what interval would you expect 99.7% of the data to be found? To who would do
For the following set of supply and demand curves, calculate equilibrium price and quantity. QD = 2000 - 2P; QS = 2P a) Q = 1000, P = 250 b) Q = 500, P = 1000 c) Q = 1000, P= 400 Q = 1000, P= 500