(i) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an integer, fraction, or decimal, Sy = (iii) Enter an exact number as an integer, fraction, or decimal. (iv) Enter an exact number as an integer, fraction, or decimal. n-1 = O Part (b) O Part (c) O Part (d) Which distribution should you use for this problem? (Enter your answer in the form z or tar where df is the degrees of freedom.) Explain your choice. O The standard normal distribution should be used because the sample standard deviation is known. O The Student's t-distribution for 14 degrees of freedom should be used because the sample standard deviation is known. O The Student's t-distribution for 13 degrees of freedom should be used because we do not know the population standard deviation. O The standard normal distribution should be used because the population standard deviation is known. O Part (e) Construct a 99% confidence interval for the population mean length of time using training wheels. (i) State the confidence interval. (Round your answers to two decimal places.) (ii) Sketch the graph. (Round your answers to two decimal places. Enter your al2 to three decimal places.) CL = (iii) Calculate the error bound. (Round your answer to two decimal places.)
(i) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an integer, fraction, or decimal, Sy = (iii) Enter an exact number as an integer, fraction, or decimal. (iv) Enter an exact number as an integer, fraction, or decimal. n-1 = O Part (b) O Part (c) O Part (d) Which distribution should you use for this problem? (Enter your answer in the form z or tar where df is the degrees of freedom.) Explain your choice. O The standard normal distribution should be used because the sample standard deviation is known. O The Student's t-distribution for 14 degrees of freedom should be used because the sample standard deviation is known. O The Student's t-distribution for 13 degrees of freedom should be used because we do not know the population standard deviation. O The standard normal distribution should be used because the population standard deviation is known. O Part (e) Construct a 99% confidence interval for the population mean length of time using training wheels. (i) State the confidence interval. (Round your answers to two decimal places.) (ii) Sketch the graph. (Round your answers to two decimal places. Enter your al2 to three decimal places.) CL = (iii) Calculate the error bound. (Round your answer to two decimal places.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Just Part A,D,and E
Transcribed Image Text: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 eleven months with a sample standard deviation of five months. Assume
that the underlying population distribution is normal.
O Part (a)
(i) Enter an exact number as an integer, fraction, or decimal.
X =
(ii) Enter an exact number as an integer, fraction, or decimal.
Sx =
(ii) Enter an exact number as an integer, fraction, or decimal.
%3D
(iv) Enter an exact number as an integer, fraction, or decimal.
n- 1 =
O Part (b)
O Part (c)
O Part (d)
Which distribution should you use for this problem? (Enter your answer in the form z or tar where df is the degrees of freedom.)
Explain your choice.
O The standard normal distribution should be used because the sample standard deviation is known.
O The Student's t-distribution for 14 degrees of freedom should be used because the sample standard deviation is known.
O The Student's t-distribution for 13 degrees of freedom should be used because we do not know the population standard deviation.
O The standard normal distribution should be used because the population standard deviation is known.
O Part (e)
Construct a 99% confidence interval for the population mean length of time using training wheels.
(i) State the confidence interval. (Round your answers to two decimal places.)
(ii) Sketch
egraph. (Round your answers to two decimal places. Enter your al2 to three decimal places.)
CL =
(iii) Calculate the error bound. (Round your answer to two decimal places.)
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