**The National Survey of Family Growth conducted by the Centers for Disease Control gathers information on family life, marriage and divorce, pregnancy, infertility, use of contraception, and men’s and women’s health. One of the variables collected on this survey is the age at first marriage. The histogram below shows the distribution of ages at first marriage of 5,534 randomly sampled women between 2006 and 2010. The average age at first marriage among these women is 23.44 with a standard deviation of 4.72.**![Age at first marriage histogram]The histogram illustrates the distribution of age at first marriage for women sampled in the survey. The number of women is plotted on the vertical axis (ranging from 0 to 800), while the age at first marriage (ranging from 10 to 45) is shown on the horizontal axis. The majority of women got married between the ages of 20 and 30, with the peak frequency around 23-24 years.### Exercisesa) Assume that the standard deviation of this sample is an accurate estimate of the population sample standard deviation and estimate the average age of US women at first marriage using a 90% confidence interval. Give your answers to two decimal points.**90% confidence interval in years: ( _______, ______ )**b) Suppose that Canadian women have the same population standard deviation as American women when it comes to age at first marriage. We would like to obtain a 90% confidence interval for the age at first marriage of Canadian women and we would like the margin of error of the interval to be less than one year. How large a random sample do we require?**Sample size n = _______**

The confidence interval for population mean is computed by , where ME is the margin of error. When…

The National Survey of Family Growth conducted by the Centers for Disease Control gathers information on family life, marriage and divorce, pregnancy, infertility, use of contraception, and menOs and womenOs health. One of the variables collected on this survey is the age at first marriage. The histogram below shows the distribution of ages at first marriage of 5,534 randomly sampled women between 2006 and 2010. The average age at first marriage among these women is 23.44 with a standard deviation of 4.72. 000 800 600 400 200 10 15 20 25 30 35 40 45 Age at first marriage a) Assume that the standard deviation of this sample is an accurate estimate of the population sample standard deviation and estimate the average age of US women at first marriage using a 90% confidence interval. Give your answers to two decimal points. 90% confidence interval in years: ( b) Suppose that Canadian women have the same population standard deviation as American women when it comes to age at first marriage. We would like to obtain a 90% confidence interval for the age at first marriage of Canadian women and we would like the margin of error of the interval to be less than one year. How large a random sample do we require? Sample size n =

The National Survey of Family Growth conducted by the Centers for Disease Control gathers information on family life, marriage and divorce, pregnancy, infertility, use of contraception, and menOs and womenOs health. One of the variables collected on this survey is the age at first marriage. The histogram below shows the distribution of ages at first marriage of 5,534 randomly sampled women between 2006 and 2010. The average age at first marriage among these women is 23.44 with a standard deviation of 4.72. 000 800 600 400 200 10 15 20 25 30 35 40 45 Age at first marriage a) Assume that the standard deviation of this sample is an accurate estimate of the population sample standard deviation and estimate the average age of US women at first marriage using a 90% confidence interval. Give your answers to two decimal points. 90% confidence interval in years: ( b) Suppose that Canadian women have the same population standard deviation as American women when it comes to age at first marriage. We would like to obtain a 90% confidence interval for the age at first marriage of Canadian women and we would like the margin of error of the interval to be less than one year. How large a random sample do we require? Sample size n =

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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