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the sample size needed to provide a margin of error of 2 or less with a .95 probability when the population standard deviation equals 11 is?
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Ross Simon a jewelry catalog is testing different executions in its catalog design.
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A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Seven employees were included from Area...
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The times for three runners is 66.08, 68.58, and 77. Suppose a random sample of two of these times is selected with replacement. If needed, you may...
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Explain the concept of a sampling distribution. Identify three characteristics of the sampling distribution of the sample mean.
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Looking for assistance with the formula for the below question. I thought it would be /(n)^() with the answer of 36/5 =7. But received an incorrect...
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The US mint is assessing its process capability for minting quarters. In regard to weight, the upper specification is 5.68 grams and the lower...
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the question is quot;The t value for a 95% confidence interval esitmate with 24 degrees of freedom is ? the answer is 2.064 but why? or rather why
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The mean of a population is 77 and the standard deviation is 13. The shape of the population is unknown. Determine the probability of each of the...
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The table below shows the results of a survey in which 141 men and 145 women workers ages 25 to 64 were asked if they at least have one month income...
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A distribution of numbers is approximately bell shaped. If the mean of the numbers is 128 and the standard deviation is 14, a. between what two
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Tompkins Associates reports that the mean clear height for a Class A warehouse in the United States is 22 feet.
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Suppose you are working with a data set that is normally distributed, with a mean of 200 and a standard deviation of 48. Determine the value of x...
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Now assume that Dr. Peterson's variables were measured as:
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The table below shows the results of a survey in which 141 men and 145 women workers ages 25 to 64 were asked if they have at least one month income...
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Seven lamps are located as shown in Figure 1. Each lamp can fail with probability q, independently of all the others. The system is operational if no...
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The Bureau of Labor Statistics American Time Use Survey showed that the amount of time spent using a computer for leisure varied greatly by age....
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A recent study on teenage pregnancy indicates that 5% of the female population will get pregnant sometime in their teenage years.
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weight-loss clinic advertised that last month its patients, on average, lost 7 lbs . Assuming that average refers to the mean , which of the
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Statistics - Please show steps: Three experiments investigating the relation between need for cognitive closure and persuasion were performed.
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A college professor claims that the entering class this year appears to be smarter than entering classes from previous years.
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Please review the presentation, Misleading Graphs and Statistics (Links to an external site.) and post your comments how the presentation affects...
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The average time for students in MUN to commute to the university from their home is claimed to be 20 minutes with standard deviation of 10 minutes.
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I find proportion question quiet confusing, could any one just put me through, what formula to use and when?
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In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five treatments (a total of...
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A computer Company claims that its Laptop has a battery that will last, on average, more than 3.5 hours on a full charge.
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Richard has been given a 12 question quiz in his history class each question has 4 answers of only one is correct. Since Richard has not attended the...
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12. Fix-It Copiers advertises a mean time of 100 minutes for office calls with a standard deviation of 25 minutes. What percentage of calls are
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If sale of bread and sale of jelly then sale of peanut butter is 80 % is an example of: Select one: Decision Rule b. Sales Rule c. Association Rule d....
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A young investment manager tells his client that the probability of making a positive return with his suggested portfolio is 95%. If it is known that...
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1) Use the t -distribution to find a confidence interval for a mean given the relevant sample results. Give the best point estimate for , the margin...
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A department store made a study of personal checks it received for payment of goods.
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I'm currently taking Math 302 statistics with APU/AMU, and I'm not doing so well, does anyone have any good study material for the final exam?
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-Perform certain calculations discussed in the assigned reading in order to derive an answer for each problem.
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A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will...
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In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be surveyed in order to be...
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A production process produces an item. On average 15% of all items produced are defective. Each item is inspected before being shipped and the...
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how can we find fuzzy probability under exponential distribution using matlab
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Do one of the following, as appropriate.
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I would like to use your service to assist me in taking a statistics exam. Can you help me?
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A company's customer support division want to test to see if that wait time for a consumer to talk to a representative is under 10 minutes.
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1. What is logistic regression? 2. Identify types of logistic regression? 3. How to perform logistic regression in SPSS? 4. Discuss the objectives of...
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Consider a regression situation in which y = hardness of molded plastic and x = amount of time elapsed since termination of the molding process....
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the researcher wants to predict the miles/gallons for an automobile that has a manual transmission, displacement is 250 (cubic in). and weight is...
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construct a 98% confidence interval to estimate the population mean with x=62 and 0= 12 for the following sample sizes. n = 33 b. n = 41 c. n = 60 a....
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For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output; this
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I am having trouble with this Create a Microsoft Excel spreadsheet with the two variables from your learning team's dataset.
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A colony of lab mice consisted of several hundred animals. Their average weight was about 30 grams, and the SD was about 5 grams.
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The relation between y = ideal weight (lbs) and x =actual weight, based on data from n = 119 women, resulted in the regression line y = 44 + 0.60 x Q:...
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txt (located on Canvas course website). The Current Population Survey (CPS) is used to supplement census information between census years.
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