Please one question at a time.
I have done 4th one.
1. Many companies use a incoming shipments of parts, raw materials, and so on. In the...
CENGAGE MINDTAP Search this course napter 9 Assignment ох eBook Consider the following hypothesis test: HO: 50 OH > 50 A sample of 50 is used and the population standard deviation is 8. Use the critical value approach to state your conclusion for each of the following sample results. Use a = .05. a. With I-52.5, what is the value of the test statistic (to 2 decimals)? Can it be concluded that the population mean is greater than 50? b....
1. The total flow at a wastewater-treatment plant is on average 600 m' /day with a standard deviation of 45 m /day and behaves in accordance with a normal distribution. (a) With what probability would the flow on any given day exceed 680 m /day? (b) We can expect to see 90% of the days exhibit a flow above what value? (c) Suppose we wish to test whether the flow mean has changed based on the average taken over 9...
2side Hypothesis Testing_03 (two independent sam machines are used for filling plastic battle with a new volume of 16.0 ounces. The fill volume can be assumed was with standard deviations d. 0.020 and 0.025 ounces. A member of the quality engineering staff that both machines fill to the same mean net volume, whether or not this volume is 16.0 ounces. random sample of 10 bottles is taken from the output of each machine: Machine 01 16.03 16.01 16.04 15.96 16.05...
1. A manufacturer claims that the mean lifetime of its lithium battery is 1000 hours. A homeowner selects 40 batteries and finds the mean lifetime to be 990 hours with a standard deviation of 80 hours. Test the manufacturer's claim. Use alpha = 0.05. a. Calculate the test statistics. test statistics= (Round your answer to the nearest hundredth) Answer is not 0.79 or 0.80 2. A local juice manufacturer distributes juice in bottles labeled 12 ounces. A government agency thinks that...
1. Use the given degree of confidence and sample data to construct a confidence interval for the point) population proportion p. A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all voters in the state who favor approval. 0 0.438<p0.505 0 0.444 p0.500 0 0.435<p<0.508 O 0.471 p0.472 2. Use the given data to find the minimum sample size required...
It is known that nationally, students attending four-year colleges get an average of 6.75 hours of sleep per night, with a standard deviation of 1.7 hours. You are interested in seeing if students who attend commuter colleges (colleges where students must commute to school because there are no dorms on campus), such as John Jay College of Criminal Justice, differ significantly from this national average. Complete the following steps in order: What are the population mean and population standard deviation?...
Please help to do these questions, Thank you so much! Three different brands of tires were compared for wear characteristics. From each brand of tire, ten tires were randomly selected and subjected to standard wear-testing procedures. The average mileage and the sample standard deviation (both in 1000 miles) obtained for each brand of tire are shown below. The overall mean is 36. 2) Brand C | Brand A | Brand B Average Mileage37 Sample Variance 38 What are the numerical...
for following questions please 1. compute test value 2. find critical value. thanks so much kind sirs! much apprecation!! thanks for help Next Previous up Question 1 of 5 (1 point) View problem in a pop 9.2 Section Exercise 1a,b,c,d,e (critical value, table) Is there a significant difference at a = 0.05 in the mean heights in feet of waterfalls in Europe and the ones in Asia? The data are shown. Source:World Almanac. Use the critical value method with tables....
1. A random sample of people who work regular 9-5 hours and a random sample of people who work shifts were asked how many hours of sleep they get per day on average. An appropriate F-test was performed and it was found that the null hypothesis of the F-test should be rejected. Can we infer that there is a difference in the number of hours people sleep depending on whether they work 9-5 or shifts? Printout # ?? ??0: ??...
WBWK7-Sects7.8and8.1-8.4: Problem 6 Prev Up Next 2 pts) Ten randomly selected people took an lQ test A, and next day they took a very similar IQ test B. Their scores are shown in the table below. Person 12 345 67 8 9 10 Test A 93 104 100 103 90 108 123 82 74 114 Test B 196 108 102 108 87 107 1228172 119 1. Consider (Test A - Test B). Use a 0.01 significance level to test the...