Assume that the mean length of all cell phone conversations in a certain country is 3.75 minutes and the standard deviation is 4.3 minutes. Complete parts (a) through (c) below. a. Describe the shape of the distribution of the length of cell phone conversations in this population. Do you expect it to be approximately Normally distributed, right-skewed, or left-skewed? Explain your reasoning. The distribution will be ? because the values will be? b. Suppose that, using a phone company's records, we randomly sample 100 phone calls. We calculate the mean length from this sample and record the value. We repeat this thousands of times. What will be the (approximate) mean value of the distribution of these thousands of sample means? nothing minutes (Type an integer or a decimal. Do not round.) c. Refer to part (b). What will be the standard deviation of this distribution of thousands of sample means? nothing minutes (Type an integer or a decimal. Do not round.)
Assume that the mean length of all cell phone conversations in a certain country is 3.75 minutes and the standard deviation is 4.3 minutes. Complete parts (a) through (c) below. a. Describe the shape of the distribution of the length of cell phone conversations in this population. Do you expect it to be approximately Normally distributed, right-skewed, or left-skewed? Explain your reasoning. The distribution will be ? because the values will be? b. Suppose that, using a phone company's records, we randomly sample 100 phone calls. We calculate the mean length from this sample and record the value. We repeat this thousands of times. What will be the (approximate) mean value of the distribution of these thousands of sample means? nothing minutes (Type an integer or a decimal. Do not round.) c. Refer to part (b). What will be the standard deviation of this distribution of thousands of sample means? nothing minutes (Type an integer or a decimal. Do not round.)
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Question
Assume that the mean length of all cell phone conversations in a certain country is
3.75
minutes and the standard deviation is
4.3
minutes. Complete parts (a) through (c) below.a. Describe the shape of the distribution of the length of cell phone conversations in this population. Do you expect it to be approximately Normally distributed , right-skewed, or left-skewed? Explain your reasoning.
The distribution will be
because the values will be?
?
b. Suppose that, using a phone company's records, we randomly sample 100 phone calls. We calculate the mean length from this sample and record the value. We repeat this thousands of times. What will be the (approximate) mean value of the distribution of these thousands of sample means?
nothing
minutes(Type an integer or a decimal. Do not round.)
c. Refer to part (b). What will be the standard deviation of this distribution of thousands of sample means?
nothing
minutes(Type an integer or a decimal. Do not round.)
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