The standard deviation of measurements of a linear dimension of a mechanical part is 0.14 mm. What sample size is required if the standard error of the mean must be no more than 0.04 mm? * 13 10 12 11 O O O
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- Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample of 134 adult males, the pulse rates have a standard deviation of 11.2bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)Automobile Parts: An important manufacturing process produces cylindrical component parts for the automotive industry. It is important that the process produce parts having a mean diameter of 5.0 millimeters. The engineer involved conjectures that the population mean is 5.0 millimeters. An experiment is conducted in which 100 parts produced by the process are selected randomly and the diameter measured on each. It is known that the population standard deviation is σ = 0.1 millimeter. The experiment indicates a sample average diameter of x = 5.027 millimeters. Does this sample information appear to support or refute the engineer's conjecture?Hn. Don't provide handwriting solution
- Claim: The standard deviation of pulse rates of adult males is more than 11 bpm. For a random sample of 170 adult males, the pulse rates have a standard deviation of 12.2 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)Compute the range and sample standard deviation for strength of the concrete (in psi). 3920, 4070, 3500, 3100, 2930, 3870, 4070, 4010 The range is S= psi. psi (Round to one decimal place as needed.)Answer the exercise of the image. (In the other image are the final answers, this to verify the final answer).
- Scores on a standardized exam are normally distributed with a mean of 517 and a standard deviation of 60. The figure below shows the distribution of the scores on a standardized exam. Cal- culate the shaded area under the curve. Express your answer in decimal form accurate to at least two decimal places. Answer: 397 457 The Scores on a Standardized ExanWhich of the following is the correct formula for the margin of error of a population mean where the population standard deviation is not known? A. EBP =z⋅√p'⋅q'n=z⋅p′⋅q′n B. t=¯x−μs√nt=x¯-μsn C. EBM =t⋅s√n=t⋅sn D. EBM =z⋅σ√nClaim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample of 157 adult males, the pulse rates have a standard deviation of 10.9 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)