Name__Solutions_______________ Date_________________________ Answer the following questions from the given situation. Suppose a Normal model describes the fuel efficiency of cars currently registered in your state. The mean is 24 mpg‚ with a standard deviation of 6 mpg. -3σ - 2σ -1σ μ 1σ 2σ 3σ 1. Sketch the Normal model (label). 68% 95% 99.7 % 2. What percent of cars get less than 15 mpg? 15 24 z 1.5 P(y<15)=P(z<-1.5)=6.7% 6 12 18 24 30 36 42 6 3. What percent of cars get between 20 and
Premium Normal distribution Standard deviation Median
Exam Name___________________________________ Instructions: Read all the questions carefully and show all your work for full credit. All answers must be supported by correct work to receive full credit. SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Solve the problem. 1) Multiple-choice questions on a test each have 4 possible answers‚ one of which is correct. Assume that you guess the answers to 4 such questions. a. Use the multiplication rule to
Premium Normal distribution Probability theory Standard deviation
2(12%) + 0.35(18%) + 0.3(-10%) + 0.15(10%) = 7.2% The standard deviation is: 2J = 0.2(0.12 – 0.072)2 + 0.35(0.18 – 0.072)2 + 0.3(-0.1 – 0.072)2 + 0.15(0.1 – 0.072)2 = 0.0135 J = = 11.63% 2. Answers: The average return and standard deviation of Large co. stock return is: Sum of Large co. stock = -14.69 – 26.47 + 37.23 + 23.93 – 7.16 + 6.57 = 19.41 Mean = Sum/N = 3.235 Large = = The average return and standard deviation of T-bill return is: Sum of T-bill = 7.29 + 7.99 + 5.87 + 5
Premium Standard deviation Arithmetic mean Probability theory
rely on operators’ individual performance since each of them had their own mindset how to handle the machines from their experience. The knowledge of dealing with machines belonged to operators‚ not the company. The Greenlight project s provides the standard direction‚ which benefits to the company since now the knowledge belongs to the company. Basing your analysis on both quantitative and qualitative tools‚ what evidence is there that quality is getting worse? Finger Height control The control chart
Premium Quality control Standard deviation Arithmetic mean
median and mode; ILO3. compute dispersion measures as the range‚ interquartile range‚ standard deviation and variance; ILO4. define probability of a simple event; correctly use the concepts of conditional‚ independent‚ mutually exclusive events ‚ and apply the multiplication and addition rules to perform probability computations; ILO5. compute binomial and Poisson probabilities‚ the expected value and standard deviation of a binomial and Poisson experiment; ILO6. compute probabilities for a normal distribution
Premium Normal distribution Probability theory Sample size
in this study? Were these appropriate? a. Length of labor for both the control and experimental groups were described with mean and standard deviations. Yes‚ these were appropriate measures of statistics. 3. What other statistics could have been used to describe the length of labor? Provide a rationale for your answer. a. In addition to mean and standard deviations‚ mode could have been used in this study to describe length of labor. It would have given an understanding as to how long the common
Premium Standard deviation Arithmetic mean
Simulation of the Coiling of a polymer strand Tsvetoslav Pavlov Department of Materials‚ Imperial College London‚ United Kingdom 27th Feb 2012 1. Abstract This study will examine the temperature dependence of internal energy‚ heat capacity and R2 value (representative of the end to end distance) using a Langevin Dynamics simulation. It will also consider the dependence of the internal energy‚ heat capacity and R2 value with increasing polymer chain length. Internal energy has been found
Premium Standard deviation Energy
Individual Assignment QRB/501 University of Phoenix - MBA Activity 18:1: Question 1. Toss a coin 10 times and record the proportion of heads so far. Answer. Table for Head Proportion Toss # 1 2 3 4 5 6 7 8 9 10 H or T? H T T H H H T T H T Proportion 1/1 1/2 1/3 2/4 3/5 3/6 3/7 3/8 4/9 5/9 Question 2. Plot the proportion of heads so far‚ for each toss from the previous table. What does the graph show? Answer. Shown below is the graph plotted in Excel worksheet showing the first toss
Premium Statistics Standard deviation Random variable
Statistics: Median‚ Mode and Frequency Distribution Given a list of numbers‚ The median is the “middle value” of a list. It is the smallest number such that at least half the numbers in the list are no greater than it. If the list has an odd number of entries‚ the median is the middle entry in the list after sorting the list into increasing order. If the list has an even number of entries‚ the median is equal to the sum of the two middle (after sorting) numbers
Premium Arithmetic mean Standard deviation Median
Name: Yomary Gil Statistical Concepts: Data Simulation Discrete Probability Distribution Confidence Intervals Calculations for a set of variables Open the class survey results that were entered into the MINITAB worksheet. We want to calculate the mean for the 10 rolls of the die for each student in the class. Label the column next to die10 in the Worksheet with the word mean. Pull up Calc > Row Statistics and select the radio-button corresponding to Mean. For Input variables: enter all
Premium Statistics Normal distribution Random variable