A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23, 8.19, 8.28, 8.24. A conclusion has to be made at 1% significance that the mean rod diameter is greater than 8.20. What is the value of tcalc? Please report your answer in 3 decimal places.

A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23, 8.19, 8.28, 8.24. A conclusion has to be made at 1% significance that the mean rod diameter is greater than 8.20. What is the value of tcalc? Please report your answer in 3 decimal places.

Name: A machine produces metal rods used in an automobile suspension system.
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Description: A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.2

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 33PPS

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A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23, 8.19, 8.3, 8.24.You have to find a 95% two-sided confidence interval on mean rod diameter. What is the lower value in this 95% confidence interval? Please report your answer in 3 decimal places.
A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diamęter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23 , 8.19, 8.27, 8.24. A conclusion has to be made at 1% significance that the mean rod diameter is greater than 8.20. What is the value of teale? Please report your answer in 3 decimal places.
A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23, 8.19, 8.27, 8.24. A conclusion has to be made at 1% significance that the mean rod diameter is greater than 8.20. What is the value of tcalc? Please report your answer in 3 decimal places.
A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23, 8.19, 8.28, 8.24. How many more samples do you need to collect to estimate the mean to within 0.005 mm with 95% two-sided confidence? Assume degrees of freedom is 14 for the t distribution for calculation of this problem. Please report your answer as a whole number.
A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25 , 8.20 , 8.23, 8.24 , 8.21, 8.26 , 8.26 , 8.20 , 8.25 , 8.23, 8.23, 8.19 , 8.28 , 8.24. Test the hypothesis that population mean of diameter is at least 8.25? Use 5% level of significance. also find 95% C.I for population mean.
A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows: 8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23, 8.19, 8.19, 8.24. You have to find a 95% two-sided confidence interval on mean rod diameter. What is the upper value of the 95% CI of mean rod diameter? Please report your answer to 3 decimal places.
Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected and the diameter is measured. The resulting data (in millimeters) are as follows: No. 1 3 4 5 6 7 8 10 11 12 13 14 15 Dia. 8.20 8.16 8.23 8.25 8.26 8.23 8.20 8.26 8.19 8.23 8.20 8.28 8.24 8.25 8.24 Use the data above to calculate a 95% two-sided confidence interval on the mean rod diameter. Assume the data are normally distributed. (a) Calculate the sample mean and standard deviation. Round the sample mean and the sample standard deviation to 2 and 3 decimal places respectively (e.g. 98.76 and 98.765). i 8.23 S = i 0.031 (b) Calculate the 95% two-sided confidence interval on the true mean rod diameter. Round your answers to 3 decimal places (e.g. 98.765). 8.212 i 8.248 Statistical Tables and Charts
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Geckos are lizards with specialized toe pads that enable them to easily climb all sorts of surfaces. A research team examined the adhesive properties of 7 Tokay geckos. Displayed are the toe-pad areas (in square centimeters, cm²) for this sample. 5.6 4.9 6.0 5.1 5.5 5.1 7.5
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A random sample of shoe lengths of 11 persons were measured and listed below. 11.5 cm, 12.2 cm, 12.2 cm, 12.3 cm, 13.0 cm, 13.2 cm, 13.4 cm, 13.6 cm, 14.0 cm, 14.1 cm, 14.2 cm ion The third quartile is: