A coating that weighs at least 4.00 mg is needed to impart adequate shelf life to a pharmaceutical tablet. Arandom sampling of 160 tablets revealed that 11 failed to meet this requirement.Confidence Levels for Various Values of zConfidence Level, %Z500.67681.00801.28901.64951.9695.42.00992.5899.799.93.003.29a. Use this information to estimate the relative standard deviation for the measurement.Relative standard deviation =96b. What is the 95% confidence interval for the number of unsatisfactory tablets?95% confidence interval =c. Assuming that the fraction of rejects remains unchanged, how many tablets should be taken toensure a relative standard deviation of 5% in the measurement?Number of tablets =Submit AnswerTry Another Version9 item attempts remainingPreviousNext

The confidence levels for various values of z is given as follows.Confidence Levelz500.67…

Answered: A coating that weighs at least 4.00 mg…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A sample of the length in inches for newborns is given below. Assume that lengths are normally distributed. Find the 99% confidence interval of the mean length. Length 15.2 15.6 20.6 16.3 15.4 17.4 18.1 20.6 18.6 20.7
A sample of 14 small bags of the same brand of candies was selected. Assume that the population distribution of bag weights is normal. The weight of each bag was then recorded. The mean weight was 2 ounces with a standard deviation of 0.12 ounces. The population standard deviation is known to be 0.1 ounce. Which distribution should you use for this problem?Construct a 90% confidence interval for the population average weight of the candies. State the confidence interval.Construct a 98% confidence interval for the population average weight of the candies. State the confidence interval.
A food safety guideline is that the mercury in fish should be below 1 part per million (pprm). Listed below are the armounts of mercury (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 98% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi? 0.55 0.76 0.11 0.96 1.35 0.51 0.95
A study by the International Coffee Organisation found that persons aged 30 – 59 drank an average of 0.57 cups of coffee per day. Assuming that the sample size is 200 with a sample standard deviation of 0.4 cups, construct a 95% confidence interval for the population mean cup of coffee. Interpret your answer.
Question Annual sales (in million taka) by a chain shop are provided below.Year201020112012201320142015201620172018Sales6812181513161210(a) Estimate first order autocorrelation function ?(1) and use this to comment on the properties of the time series.(b) Obtain forecast for the year 2019 from the trend model ?̂?=5.48+4.52?−0.50?2.
Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution. A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals=17.6 milligrams. Construct a 95% confidence interval for the true mean cholesterol content of all such eggs.
A local radio station found that of 600 people surveyed 72 listened regularly to the station. A four month advertising campaign was undertaken to publicize the station. A second survey of 500 people then revealed that 92 people listened regularly to the station. Test to see if the campaigned increased the percentage of regular listeners. Show the formula and test at a Type I error of .01 and also find the p value. Construct a 95% confidence interval for the difference between these after and before percentages (Pafter – Pbefore). Interpret this confidence interval.
As part of a real estate company study, the selling prices of 50 homes in a particularneighborhood were gathered. The sample mean price was x̄=$234,000. Assumethat s is known to be $28,500. Find a 95% confidence interval for the populationmean selling price of all homes in this neighborhood.
Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The ratings were obtained at one university in a state. Construct the confidence interval using 99% confidence level. 4.0 3.0 3.9 5.0 3.0 4.0 3.4 4.8 4.6 3.9 4.0 4.0 3.1 4.1 4.0 What is the confidence interval for the population mean, µ ?
A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the amounts of mercury (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 95% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi? 0.57 0.78 0.10 0.86 1.36 0.52 0.80
A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the amounts of mercury (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 95% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi? 0.52 0.79 0.10 0.86 1.26 0.50 0.92 O What is the confidence interval estimate of the population mean u? | ppm ppm < u< (Round to three decimal places as needed.)
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