1. Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how long they had to use training wheels. It was revealed that they used them an average of 5.5 months with a sample standard deviation of three months. Assume that the underlying population distribution is normal. a) Identify the point estimate: b) Which distribution should you use for this problem? c) Construct a 90% confidence interval for the population mean length of time using training wheels State the confidence interval, calculate the margin of error, and interpret the interval.

1. Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how long they had to use training wheels. It was revealed that they used them an average of 5.5 months with a sample standard deviation of three months. Assume that the underlying population distribution is normal. a) Identify the point estimate: b) Which distribution should you use for this problem? c) Construct a 90% confidence interval for the population mean length of time using training wheels State the confidence interval, calculate the margin of error, and interpret the interval.

Name: PLEASE SHOW WORK AND ALL PARTS TO THE QUESTION.. 1. Suppose that 14 ch
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Description: PLEASE SHOW WORK AND ALL PARTS TO THE QUESTION.. 1. Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how longthey had to use training wheels. It was revealed that they used them an average of 5.5 months

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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Concept explainers

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.

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PLEASE SHOW WORK AND ALL PARTS TO THE QUESTION..

1. Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how long
they had to use training wheels. It was revealed that they used them an average of 5.5 months with a sample
standard deviation of three months. Assume that the underlying population distribution is normal.
a) Identify the point estimate:
b) Which distribution should you use for this problem?
c) Construct a 90% confidence interval for the population mean length of time using training wheels State the
confidence interval, calculate the margin of error, and interpret the interval.
d) Construct a 95% confidence interval for the population mean length of time using training wheels State the
confidence interval, calculate the margin of error, and interpret the interval.
e) Explain why the confidence interval in part d is wider than in part c.
) What would happen if 20 children were surveyed instead of 14, and the confidence level remained the
same? Why?

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