These are the only two review questions I would like assistance with. Thank You. 1. A batting average of .400 hasn't been attained for about 70 years. Go to the Baseball data set and compute the 99% CI interval for batting means statistically regarding the difficulty of hitting .400. Baseball Stats attached in Excel. 2.
1. A group of 100 students were surveyed about their interest in a new International Studies program. Interest was measured in terms of high, medium, or low. 30 students responded high interest; 50 students responded medium interest; 40 students responded low interest. What is the relative frequency of students with high intere
1) develop a point estimate of the mean cost per treatment of the drug; develop a point estimate of the standard deviation 2) What is the probablity that a random sample of 75 students will provide a sample mean SAT score within 10 of the population mean? 3) Show the sampling distribution of p 4) find the value of the standard error of the mean 5) Develop a point estimate of the proportion who are bullish on the stock market
1) Assuming the following numbers are dollar amounts per treatment with a specific drug, develop a point estimate of the mean cost per treatment of the drug. Next, develop a point estimate of the standard deviation of the cost per treatment of the drug. 4376 5578 2717 4920 4495 4798 6446 4119 4237 3814 2) T
(23) Assume that the heights of women are normally distributed. A random sample of 20 women have a mean height of 62.5 inches and a standard deviation of 2.3 inches. Use the Chi-Square distribution to construct the 99% confidence interval for the population standard deviation a of women's heights. (24) FedEx Ground would like
1. Assume that blood pressure readings are normally distributed with a mean of 117 and a standard deviation of a = 6.4. If one person is randomly selected, find the probability that their blood pressure will be less than 119. If 64 people are randomly selected, find the probability that their mean blood pressure will be l
Fore more details problems, you can see in attachment file 17. A home theater in a box is the easiest and cheapest way to provide surround sound for a hoem entertainment center. A sample of prices is shown here (Consumer Reports Buying Guide,2004). The prices are for models with a DVD player and for models without a DVD play
Rounding Off 1. State the Round-Off Rule as described in Section 3.3. You will use this rule to decide how many decimal places to round the answers in this project. If you have not noticed by now, rounding off is important; at the very least, it can make the difference between a correct and incorrect answer. 2. What is .02
5. The Dow Jones Travel Index reported what business travelers pay to hotel rooms per night in major U.S cities (The Wall Street Journal, January 16,2004). a. What is the mean hotel room rate? b. What is the median hotel room rate? c. What is the mode? d. What is the first quartile? e. What is the third quartile? Th
This posting provides different problems on operation management including assignment and transportation problems for hardrock concrete company, ashley's auto top carriers and State of Missouri.
10-7 What is the enumeration approach to solving assignment problems? Is it a practical way to solve a 5 row X 5 column problem? A 7X7 problem? Why? 10-13 The hardrock concrete company has plants in three locations and currently working on 3 major construction projects, each located at a different site. The shipping cost per
I need the attached discussion question answered as the solution in my textbook is too hard to understand. Please respond to the following discussion question. You are given the following data. Student Number Age Income/ thousands Hours Studying /Per Week Final Grade Gender 1 46 37 6 70 M 2 53 46 19 92 F 3 34 25 20 95
Really need help with this problem. Please show me how to set it up in the correct steps. a. Ryan is planning to finance her college education by selling programs at the football games for her team. there is a fixed cost of $400 for printing these programs, and the variable cost is $3. there is also a $1,000 fee that is p
For a particular sample of 50 test scores on a psychology exam, the following results were obtained.
For a particular sample of 50 test scores on a psychology exam, the following results were obtained. Mean- 78, Midrange- 72, Third quartile-94, Mode-84, Median-80, standard deviation-11, range-52, first quartile-68 What score was earned by more students than any other score and why ? ( 84 ? because it is the score that occurs
Describe the data scales that are best suited for presentation in a pie chart. Does all data have a mean, median, or mode?
A. Describe the data scales that are best suited for presentation in a pie chart. How effective are the pie charts that often accompany a newspaper article in explaining the statistics being used in the article? Using any data real or fictional, develop a pie chart and interpret the results. b. Does all data have a mean, med
Question: Random process X(t) = A exp(-t), t > 0 where A is a random amplitude with pdf f_A(a) that is uniformly distributed over -1 to + 1. Compute the mean and autocorrelation of random process X(t). Is X(t) a WSS process?
Hello, I need help with "uses of statistical information" in healthcare. I need to figure out what data in important to a healthcare organization, description of data, data definitions and type, and discuss the advantages of accurate interpretation. Word count 400 Cite and reference data (website) Example of data: Uses of
True / False - Variation in the population has little if any effect on the amount of sampling that will be experienced?
Can you help me with some True / False questions on statistics? I think I am reading too much into the question for True / False. *Variation in the population has little if any effect on the amount of sampling that will be experienced? *Parameters are numbers that can be used to describe characteristics of population? *
Please assist with these problems and use two separate Excel for each problem. The same attached file information is used for both problems. 1.Using the water use data set analyze the data using Excel and report in proper statistical form/jargon about the dataset. 2. Using the water use data set analyze the data using Exc
Please address the following question: When is the mean the best measure of central tendency? When is the median the best measure of central tendency?
Statistics students participated in an experiment to test their ability to determine when one minute (or 60 seconds) has passed.
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. Also answer the given questions. Perception of Time: Statistics students participated in an experiment to test their ability to determine when one minute (or 60 seconds) has passed. The results are given below in seconds. Identify at leas
1.A machine costs R500 000 and will depreciate to a scrap value of R15 000 in 10 years. Using reducing method of depreciation, calculate the book value of the machine at the end of the fifth year. Show your workings. 2. A machine that costs R100 000 is expected to last 5 years and then scrapped for R15 000. Its expected ret
The following table gives the marks (out of a total of 50 ) scored by 30 candidates in an examination : 5 5 7 10 10 11 12 15 16 17 19 19 19 20 20 20 20 21 26 26 27 28 30 30 33 36 37 37 40 45 1. Using class intervals equal to 5 marks, construct a less than cumulative frequency distribution of the above data. Let 5 be the
What is the Mean, Median, Mode and Standard Deviation using the following: SAMPLE DATA: 2, 5, 7, 11, 12, 16, 16 1) What is the mean of X of the data above (TO THE NEAREST 1/10)? 2) What is the median of the data above? 3) What is the mode of the data above? 4) What is the standard deviation of the data ab
The table below gives the times during working hours in a factory when a certain machine is not operating as a result of a breakdown: TIME(MINUTES) NO. OF BREAKDOWN 0 - 9 3 10 - 19 10 20 - 29
A distributor of metal detectors has an annual demand of two thousand units for a certain type.The cost to the distributor is $400 per detector, carrying cost is estimated to be 20% of the unit cost and the ordering cost is $25 per order. If the Distributor orders in quantities of 250 or more, he can get a discount of 10% on the
An automatic machine that fills containers appears to be performing erratically. A check of mass of the contents reveals the following: MASS (grams) NO. OF CANS 130 - 139 2 140 - 149 8 150 - 159 20 160 - 169
It is believed that "spreading" fires tend to do more damage to hardwood forests than do "spot" fires
Dear OTA, Please explain with step by step with formulae, please see attachment. Thanks
Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions below. Find range, IQR, SIQR, variance, standard deviation.
Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions below. X f Y f Z f 5 4 5 1 5 0 4 3 4 2 4 0 3 0 3 4 3 1 2 1 2 1 2 4 1 1 1 1 1 1 0 1 0 1 0 4 #1. Compute the range of scores for data sets (a) X, (b) Y and (c) Z. #2. For X data set, compute the interqu
Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions. Find mean, median, mode. What is a skewed distribution? What is a symmetric distribution?
Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions. X f Y f Z f 5 4 5 1 5 0 4 3 4 2 4 0 3 0 3 4 3 1 2 1 2 1 2 4 1 1 1 1 1 1 0 1 0 1 0 4 #1. (a-c) Compute the mean for each set of scores. #2. (a-c) Compute the median for each set of scores. #3. (a
When a pizza restaurant's delivery process is operating effectively, pizzas are delivered in an average of 45 minutes with a standard deviation of 6 minutes. To monitor its delivery process, the restaurant randomly selects five pizzas each night and records their delivery times. a. For the sake of argument, assume that the p
I have created 95% confidence interval estimates of the population mean µ from your data in columns E and F. I have used the fact that I know σ is 6.5, that the sample was from a normal population, and that you all took samples of size 10. Therefore, the interval becomes sample mean ± 1.96*6.5/3.16. (3.16 is the appro