Please see the attached file for full problem description. --- (1) The Ferguson Paper Company produces rolls of paper for use in adding machines, desk calculators, and cash registers. The rolls, which are 200 feet long, are produced in widths of 1 ½, 2 ½, and 3 ½ inches. The production process provides 200-foot rolls in
Use formula z=(mean of values in sample - mu subscript mean of values in sample) divided by (lower case sigma divided by sqrt number of values in sample) The claim is mu = 73.4 and sample statistics include n=35, mean of values in sample = 69.5, and s=8.7.
Subject: need a paired difference statistical analysis Details: I am writing a thesis and need a paired difference statistical analysis with a confidence level at 95% with t-value for alpha of 0.25 My hypothesis is that there is a statistically significant differnce between two test scores for the following samples (
1. A study compared the step length in meters of amputees using a solid ankle cushion heel (SACH) prosthesis with those using a Carbon Copy II (CCII) device. For the random sample of 10 using SACH, the mean step length was 0.764 meter, and the standard deviation was 0.0011 meter. For the sample of 10 using CCII, the mean step
Golf course designers are concerned that the old courses are becoming obsolete because new equipment enables golfers to hit the ball so far. One designer believes the new course need to build with the expectation that players will be able to hit the ball more than 250 yards on average. A sample of 29 golfers was tested and their
A company wishes to purchase one of five different machines A,B,C,D, and E. In an experiment to decide whether there is a difference in performance of the machines five experienced operators each work on the machines. The table below shows the number of units produced. Test the hypothesis that there is no difference amo
2. A company wishes to purchase one of five different machines A,B,C,D, and E. In an experiment to decide whether there is a difference in performance of the machines five experienced operators each work on the machines. The table below shows the number of units produced. Test the hypothesis that there is no difference a
A coin tossed 10,000 times. Heads appears 5100 times. Do you think the coin is fair at the 0.05% level of significance? at the 0.01% level of significance?
For OTA 103997 or 103300 only Express null hypothesis H subscript 0 and alternative hypothesis H subscript 1 in symbolic form. Use correct symbol (u(mu),p or,o(sigma)) for indicated parameter. The mean salary of professors is at least $60,000.
The American Association of University Professors conducts salary studies of college professors and publishes its finding in the AAUP Annual Report. College professors are divided into two populations: faculty in public institutions and faculty in private institutions. The summary statistics for the starting salaries of the two
Randomly selected statistics students were given five seconds to estimate the value of a product of numbers with a summary of the results of both groups given below. Does the order of the numbers appear to have an effect on the variances? Use a 0.05 significance level to test the difference between variances of the two samples.
Identify the test and state the hypothesis, then: Katy Fit, aerobics instructor at the Anderson Recreation Center, is analyzing the attendance at her classes. She wonders if the mean number of people who come on Monday morning is the same as on Wednesday morning. Some people may be exhausted from their other weekend activit
Name the test to use and the hypotheses first, then: 1. (18 points) The U.S. Bureau of Prisons publishes data in Statistics Report on the times served by prisoners released from federal institutions for the first time. Independent random samples of released prisoners in the fraud and firearms offense categories yielded the
1. A study was conducted on the annual incomes of corporate trainers in the state of New York in metropolitan areas having a population less than 100,000 and in metropolitan areas having a population over 500,000. Some sample statistics are: (see stats in attached file) Test the hypothesis that the annual income of corp
The effects of variety upon the learning of the mathematical concepts of Boolean set union and intersection were studied. Ss from 5th and 7th grades were selected from four randomly selected schools. They were randomly assigned to four fixed experimental conditions which varied in two ways. Ss in the large variety conditions wer
Subject: Null/alt hypoth; decision rule; value of test stat; Ho and p-value, interpret Details: The manufacturer of the X-15 steel belted radial truck tire claims that the mean mileage the tire can be driven before the treads wear out is 60,000 miles. The standard dev of the mileage is 5,000 miles. The C Truck Company bought 4
Pearl(1968)reports lactation studies with ewes.In one of his experiments nine ewes were divided into groups of three.In group 1 the ewes and lambs were fed freely during the lactation period;in the other groups two different methods of restricting the food intake were used.He records the yields of residual milk in grams for each
A quality inspector is interested in the time spent replacing defective parts in one of the company's products. The average time spent should be at most 20 minutes per day according to company standards. To conduct the test, a random sample of 36 employees is chosen. The average time spent replacing defective parts for the sa
My problem is that I have been doing a group project with no one else participating. So I have formulated my own results, but think that I might be a little off track. So I am trying to seek some help with the problem and see if I am going in the right direction. I have attached a copy of the problem.
Details: 1. What is the between a raw score of 113 and 126 in a normal distribution with a mean of 100 and a standard deviation of 10? Find the area below and under the score of 135. 2. Test null hypothesis that urban and rural residents both have the same attitude toward gun control(data1). Group 1 is a group of the urban r
1.) In a normal distribution with mean 59 and standard deviation 22, how large a sample must be taken so that there will be at least a 90 percent chance that its mean is greater than 53? 2.) In the second week of June 1996, the average number of units produced per week for all models of automobiles manufactured in the U.S. w
We know that the Gamma value=0.298 and the approximate p-value=.000 which is understood p-value<=0.001. So, under a significance level alpha=0.001, we should reject the null hypothesis, ie., there is a significance difference between the groups. See the attached file.
Standards set by the FDA indicate that Americans should not exceed an average daily sodium intake of 3300 milligrams (mg). To find out whether Americans are exceeding this limit a sample of 25 Americans is selected and the mean daily sodium intake is found to be 3120 mg with a standard deviation of 800 mg. Is this sufficient to
Insurance companies partially base automobile insurance rates on the mileage per year of the insured car. The average passenger vehicle in the United States is driven 11.3 thousand miles per year. In a Florida town, the average of 42 residents is found to be 9.8 thousand miles per year with a standard deviation of 5.8 thousand
Insurance companies partially base automobile insurance rates on the mileage per year of the insured car. The average passenger vehicle in the United States is driven 11.3 thousand miles per year. In a Florida town, the average of 42 residents is found to be 9.8 thousand miles per year with a standard deviation of 5.8 thousand
Recall that the SAT math test has a theoretical mean of 500 and a standard deviation of 100: Suppose a sample of 50 mathematically -gifted youngsters scored a mean of 560 on the SAT math test. What would the 90 percent confidence limits be? What would the 99 percent confidence limits be for the same sample?
Studies show that gasoline use for the hybrid cars that are sold in the United States is normally distributed with a mean of 51.7 miles per gallon (mpg) for 2002. A random sample of 49 of the newer hybrid cars is tested in 2004 and found to have an average of 54.2 mph on the highway and a standard deviation of 4.5 mpg. Is thi
Larry Jacava is considering producing a novelty item for golfers that will be sold through pro shops. Larry has decided on a selling price of $3.50 for the item. The item's variable cost of production is $2.00 per unit with a fixed cost of $3,750. Larry has marketed his production to local pro shops and believes the demand for t
A laboratory claims that the mean sodium level... see attached
A manufacturer claims that the mean lifetime of its light bulbs is 51 months. The standard deviation of these lifetimes is 5 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 50 months. Can we conclude....(see attached)