this machine if a random sample of 36 drinks had an average content of 2.25 dl. 2. The heights of a random sample of 50 college students showed a mean of 174.5 centimeters. Assume the standard deviation is 6.9 cm. What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5? 3. How large a sample is needed in #1 above is we wish to be 95% confident that our sample mean will be within 0.3 dl
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Kindergarten Graduation. This is a great occasion in the lives of all the children. It is also due recognition for ... What is an example of a graduation speech by a kindergarten child wiki.answers.com › Wiki Answers › Categories Can I have a sample of a kindergarten graduation speech? Umm... no. You should be able to write a kindergarten graduation speech fairly well‚ especially. FORUMOSA • Kindergarten Graduation Speech....Help https://www.forumosa.com/taiwan/viewtopic.php?f=35&t=107380.
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become more familiar with the lab equipment. Repeatability measurements were taken on a bolt to get the total length‚ and also measuring the flow rate of a faucet by measuring the amount of time it took to fill a beaker. To ensure a more accurate sample‚ twenty measurements of each section were obtained. For the batch measurement portion of this lab‚ a multi-meter was used to measure the resistance in a pack of ten resistors. Each member measured the resistors twice to allow for more precise statistical
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that the average pulse rate of adults is 70. For a sample of 64 adults‚ the average pulse rate is 71.8. A significance test is done and the p-value is 0.02. What is the most appropriate conclusion based on α of 0.05? A) Conclude that the population average pulse rate is 70. B) Conclude that the population average pulse rate is 71.8. C) Reject the hypothesis that the population average pulse rate is 70. D) Reject the hypothesis that the sample average pulse rate is 70. Feedback: Since the
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set at 0.05. A random check of 172 unpaid balances revealed the sample mean is $407 and the standard deviation of the sample is $38. Should the credit manager conclude that the population mean is greater than $400? Question 2 A machine is set to fill a specially designed bottle with 9.0 grams of vitamins. It is claimed that the mean is less than 9.0 grams. The hypothesis is to be tested at the 0.01 level. A sample revealed these weights (in
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10.89 1.99 (32.82‚ 39.57) C18 30 40.15 10.30 1.88 (36.96‚ 43.35) C19 30 37.34 9.08 1.66 (34.53‚ 40.16) C20 30 39.46 10.65 1.94 (36.16‚ 42.77) C21 30 34.71 9.21 1.68 (31.85‚ 37.57) d) 1 Sample T-Test for Variable C2 n= 30 df= 29 = 36.91 SE= 1.92 α= 1-CC = 1.0.90 = 0.1 e) Apply binomial theorem for x= 16‚ 17‚18‚19‚20 p=0.9 q=0.1 n=20 16 Interval 17 Interval 18 Interval 19 Interval 20 Interval
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more likely to purchase? o What are the preferred colors? 5. Compute the mean of the following sample values: 16.25‚ 12.91‚ and 14.58. 16.25 + 12.91 + 14.58 = 43.74 43.74 / 3 14.58 21. What is sampling error? Sampling error is the estimated error caused by the observation of a sample instead of the entire population. Could the value of the sampling error be zero? Only when the sample is the entire population the sampling
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random sample of 40 bricks from a day’s output had a mean weight of 4.07lb. (i) Find a 99% confidence interval for the mean weight of all bricks produced on that day. (ii) Estimate the smallest sample size required if the error in estimating the population mean weight of all bricks is to be within 0.03lb with 95% confidence. 2. A house cleaning service claims that they can clean a four bedroom house in less than 2 hours. A sample of n = 16 houses is taken and the sample mean is
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midterm is represented here. 1. Sign on San Diego‚ a service of the San Diego Union Tribune contains many advertisements for used vehicles. A simple random sample of 27 ads for used SUV’s‚ model years 19902004 was taken from the set of 234 ads. A sample ad‚ as well as a table giving the manufacturer‚ model year‚ and asking price for vehicles in the sample is given below. Year 2003 Make/Model Chevrolet Tahoe Price $23‚500 Mileage 43‚935 Seller Private Seller This one is the best one you will ever see
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critical method * X= 60‚ level of significance= 0.05 * Reject null hypothesis GENETICS | | | | Data | Null Hypothesis = | 0.79 | Level of Significance | 0.05 | Population Standard Deviation | 20 | Sample Size | 100 | Sample Mean | 60 | | | Intermediate Calculations | Standard Error of the Mean | 2 | Z Test Statistic | 29.605 | | | Two-Tail Test | | Lower Critical Value | -1.959963985 | Upper Critical Value | 1.959963985 | p-Value |
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