A manufacturer produces 54-pound lifting weights. The lowest actual weight is 40 pounds, and the highest is 74 pounds. Each weight is equally likely so the distribution of weights is uniform. A sample of 49 weights is taken
Q: Find the mean of the sampling distribution of sample means using the given information. Round to one…
A: Mean()=76standard deviation()=14sample size(n)=49
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A: When the two groups of samples are somehow related, then the groups of samples are called dependent…
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A: Given X=300 n=1815
Q: Consider these sample data: x1=12, x2=6, x3=4, x4=14. a. Find n. b.Compute ∑xi.…
A:
Q: Determine and o, from the given parameters of the population and sample size. H=85, o = 18, n= 36
A: Given,μ = 85σ = 18n = 36
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A: Introduction: It is required to identify the sampling technique used.
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Q: Calculate the sample size from the following information: E = 0.5, a= 5, c = 0.95
A: Solution-: Given: σ=5,M.E.=E=0.5,c=0.95 We find sample size, n=?
Q: There are six sisters and a family. Their ages are 7 years, 10 years, 15 years, 15 years, 20 years,…
A: Assume that the random variable x defines the ages of the sisters in the family.
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A: Given statement is : The sample mean is denoted by ?μ and is a point estimate for the population…
Q: 0.845 ľyx2 0.791 Txx2 = 0.371
A: Solution : Given : n=5 k =2 ryx1= 0.845 ryx2 = 0.791 rx1x2=…
Q: Determine u, and o, from the given parameters of the population and sample size. H=71, o = 6, n = 36
A: It is given that, Mean value of certain population, μ = 71 and The standard deviation of a certain…
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A: It is an important part of statistics. It is widely used. Since the question has multiple sub parts…
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A: It is given that the data set from the dotplot is:0, 1, 3, 3, 3, 4, 5, 6, 6, 9
Q: Find the population variance for the following data set: 13,23,26,17,21
A: Given data set: 13,23,26,17,21
Q: A college football coach was interested in whether the college's strength development class…
A: From the provided information, we can assume that a maximum lifting weight of 4 people recorded,…
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Q: In systematic sampling, the population is 550 and the selected sample size is 50. The sampling…
A:
Q: Find the estimated standard error for the sample mean for n = 8 and SS= 5042.
A: Given n=8, SS=5042
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- For the following sample data, find M: 8 , 2, 2, 5, 3.determine whether the samples are independent or dependant. To test the effectiveness of a drug, cholesterol level are measured in 60 men and 60 women after the treatment.The heights, in inches, of the four members of a barbershop quartet of singers are listed below. 72,68,67,73 Find the population variance for this data set. Round to one decimal place if necessary.
- 20 computer screens were randomly selected from a large collection of computer screens in a company’s warehouse. These 20 computer screens are referred to as the: test statistic. parameter. population. sample.Atlanta area animal shelters euthanize more animals per year than most other major city shelters. The following stem-and-leaf display shows the number of homeless cats and dogs that had to be euthanized each year in the Atlanta area for the period 1985-2004. Describe the distribution (shape, center, spread, unusual features). Choose the best answer for the question above: a. The distribution of the number of cats and dogs that were euthanized is unimodal, ranging from 81,100 to 90,100 euthanized. The center of the distribution is at around 85,500. b. The distribution of the number of cats and dogs that were euthanized is skewed to the right, and has several modes, with gaps in between. One mode is clustered between 87,000 and 90,000 euthanized, a second mode at 84,000, and a third mode with a cluster between 81,000 and 82,000. c.The distribution of the number of cats and dogs that were euthanized is bimodal. The upper cluster is between 89,000 and 90,000 euthanized, with a center at…Please show all your work to receive full credits. The following are sample data provided by a moving company on the weights of six shipments, the distances they are moved, and the damage that that was incurred: Weight (1,000 pounds) Distance Damage (1,000 miles) (dollars) X1 X2 y 4.0 1.5 160 3.0 2.2 112 1.6 1.0 69 1.2 2.0 90 3.4 0.8 123 4.8 1.6 186 a) Fit an equation of the form y bo + b1 x1 + b2 x2 b) Use the equation obtained in part (a) to estimate the damage when a shipment weighting 2200 pounds is moved 1100 miles. Hint: Use the given equation to solve for bo, b1 and b2 and then put it back in y= bo + bị x1 + b2 X2 X2
- Consider these sample data: x1=15, x2=9, x3=3, x4=22. a. Find n. b. Compute ∑xi. c.Determine x. a.n=A college football coach was interested in whether the college's strength development class increased his players' maximum lift (in pounds) on the bench press exercise. He asked four of his players to participate in a study. The amount of weight they could each lift was recorded before they took the strength development class. After completing the class, the amount of weight they could each lift was again measured. What is being tested in this situation and what distribution will be used to conduct the test? Group of answer choices a.Two independent means, normal distribution. b.Single population mean, use the t-distribution. c.Single population mean, use the normal distribution. d.Two independent proportions, use the normal distribution. e.Two independent means, use the Student’s-t distribution.Please scroll down to see the entire question. The quality control manager of an automobile parts factory would like to know whether there is a difference between the proportion of defective parts produced on different days of the work week. Random samples of 100 parts produced on each day of the week were selected, with the following results: Result: Mon Tues Wed Thurs Fri # of defective parts: 12 7 7 10 14 # of non-defective parts: 88 93 93 90 86 At 5% level of significance, is there evidence of a significant difference in the proportion of defective parts produced on the various days of the week (A ) Step-1: State the hypotheses ( H0 and H1 ), and identify the claim A. H0: Proportion of defective parts is not the same for the days of the week. H1: Proportion of defective parts is the same for all days of the week B. H0: Proportion of defective parts is dependent on the days of the week H1: Proportionof defective parts is…
- A student wishes to determine the average life-span of a household light bulb. She randomly collects 15 light bulbs. The issue that may arise from her survey is… The bias will be high. The accuracy will be low. The precision will be low. The standard error will be too low.The number of regular season wins for 10 college football teams in a given season are given below: 15 5 13 | 1 2 10 15 4 7 What is the population variance? Simplify your answer. Round to the nearest hundredth as needed.Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 19th, 24th, 65th, and 75th percentiles. If needed, round your answers to two decimal digits. Percentile Value 19% 24% 65% 75%