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1. The random variable x has a hypergeometric distribution, and the population contains 12 items. If you wanted to find the number of defects in a random sample of 3 selected items when the population contains 5 defects, identify the N, n, and r. 2. Using the following probability distribution table of the random variable x,
1. Find the grade point average. Assume that the grade point values are 4.0 for an A, 3.0 for a B and so on Course Math Credits (3) Grade A English Credits (4) Grade B Physics Credits (4) Grade B German Credits (4) Grade C 2. A 2 ft vertical post cast a 12 in shdow at the same time a nearby cell phone tower casts a 11
H0: The average price is the same x1=x2 H1: x1 is greater than x2; the average price of Hmart is greater than the average price of Happy Market. Perform the relevant hypothesis test. The excel file contains the relevant data.
Search the internet for examples of how categorical data is used in the workplace.
1. Given the following data set: X Y XY X2 2 6.1 12.2 4 3 7.3 21.9 9 5 10.4 52 25 5 9.4 47 25 6 10.7 64.2 36 7 12.1 84.7 49 28.0 56.0 282.0 148.0 ™ ANOVA TABLE Source Sum of Squares df Mean Square Regression 24.641 1 24.641 Error .06123 4 .0153 Total 25 5
1i. Construct a 95% confidence interval. = 12 S = 3.19 n = 11 α = .05 = 0.96 A. Determine the t Value: 1. Significance level = .05 2. Degrees of Freedom (df) df = n-1 df = 11 - 1 df = 10 3. Determine the t value from the t Table t value = 2.228 B. 95% confidence interval: ±
1.Given the data set Values of X 13,12,9,15,11,16,17,8,12,7,12 A. Calculate the mean. B. Calculate the median. C. Calculate the mode. D. Calculate the range. E. Calculate the variance. F. Calculate the coefficient of variation G. Calculate the coefficient of variation. H. Calculate the standard error of the mean.
The following problem develop the concept of determining the probability distribution of a random variable and its mean and variance. A fair coin is tossed three times. Describe the sample space Ω. Let X be random variable that denotes the number of heads on the first toss. Describe the probability frequency distribution of
Graduating students in Business Management at many universities are required to take a the MFAT exam. Below is a random sample of results from five sections of the exam. Grades 80 90 91 62 77 a. Compute the mean and the standard deviation of the sample. b. Compute the margin of error at 95% confidence. c. Develop a
1) BusinessWeek published information on 283 equity mutual funds (BusinessWeek, January 26, 2004). A sample of 40 of those funds is contained in the data set MutualFund. Use the data set to answer the following questions. a. Develop a point estimate of the proportion of the BusinessWeek equity funds that are load funds.
Please see attached excel spreadsheet for data set on lean body mass and resting metabolic rate for 19 individuals. Then, could you help me with the following three questions: 1. Refer to the excel spreadsheet labeled Data for Exercise 3.4. Place the data on an Excel spreadsheet and use the chart wizard to construct a s
The students of Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score. 552 593 358 352 537 349 357 596 470 482
Chapter Four (Show all your work) 1) The students of Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score. 552 593 358 352 537 349 357 596 470 482
I need some guidance for the following question: A researcher wishes to estimate the mean age of all runners who participate in the annual Vancouver marathon. A random sample of 36 participants indicated a mean age of 31.4 years. It is known that the population standard deviation of ages is sigma=7.2 years. Construct a 97% c
1. According to the Census: http://www.census.gov/compendia/statab/cats/banking_finance_insurance/payment_systems_consum er_credit_mortgage_debt.html The amount of consumer credit outstanding (in billions of dollars) for selected years is as follows: 1998: $1,421 2003: $2,078 2008: $2,563 a. Find the geometric mea
Question: An elementary school principal would like to know how many hours the students spend watching TV each day. A sample of n = 25 children is selected, and a survey is sent to each child's parents. The results indicate an average of M = 3.1 hours per day with a standard deviation of s = 3.0. a. Make a point estimate of t
In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles? Crash1 Crash Damage ($)
Question: An automobile manufacturer wants to estimate the mean gasoline mileage that its customers will obtain with its new compact model. How many sample runs must be performed in order that the estimate be accurate to within 0.25 mpg at 90% confidence? (Assume that alpha = 2.0.)
Compute the geometric mean of the following percent increases: 2, 8, 6, 4, 10, 6, 8, and 4.
Healthcare issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify for Medicaid and have no private health insurance. The ages of 25 uninsured senior citizens were as follows: 60 61 62 63 64 65
See the attached file. 6. 100 employees were randomly selected and the mean time on work per week 41 hours with std deviation of 5 hrs. The 95% confidence interval for the mean time for all employees on work per week was: (a)(40.02,41.98) (b)(40.18,41.82) (c)(1.88,8.12) (d)(2.75,7.25) For questions 7 to 9: Let X be a
Find the mean deviation of these numbers 12, 6, 7, 3, 10.