According to the Center for Disease Control and Prevention (CDC), the mean life expectancy in 2015 for non-Hispanic black females was 78.1 years. Assume that the standard deviation was 15 years, as suggested by the Bureau of Economic Research. The distribution of age at death, X, is not normal because it is skewed to the left. Nevertheless, the distribution of the mean, z, in all possible samples of size n is approximately normal if n is large enough, by the central limit theorem. Let i be the mean life expectancy in a sample of 100 non-Hispanic black females. Determine the interval centered at the population mean u such that 95% of sample means i will fall in the interval. Give your answers precise to one decimal. You may need to use software or a table of z-critical values. lower limit уears upper limit уears Murphy, Sherry L, e. al. Deaths: Final Data for 2015, National Vital Satistics Reports, Volume 66, Number 6, November 27, 2017. https://www.cdc.gov/nchs/datalnvsr/nsrb6nvsrt6 06.pdf. Acessed 24 April 2018. Ryan D. Edwards, The Cost of Lincertain Life Span, NBER Working Paper Na. 14093 December, 2011. hitp//www.nber.org/papers/w14093. Accessed 24 April 2018.
According to the Center for Disease Control and Prevention (CDC), the mean life expectancy in 2015 for non-Hispanic black females was 78.1 years. Assume that the standard deviation was 15 years, as suggested by the Bureau of Economic Research. The distribution of age at death, X, is not normal because it is skewed to the left. Nevertheless, the distribution of the mean, z, in all possible samples of size n is approximately normal if n is large enough, by the central limit theorem. Let i be the mean life expectancy in a sample of 100 non-Hispanic black females. Determine the interval centered at the population mean u such that 95% of sample means i will fall in the interval. Give your answers precise to one decimal. You may need to use software or a table of z-critical values. lower limit уears upper limit уears Murphy, Sherry L, e. al. Deaths: Final Data for 2015, National Vital Satistics Reports, Volume 66, Number 6, November 27, 2017. https://www.cdc.gov/nchs/datalnvsr/nsrb6nvsrt6 06.pdf. Acessed 24 April 2018. Ryan D. Edwards, The Cost of Lincertain Life Span, NBER Working Paper Na. 14093 December, 2011. hitp//www.nber.org/papers/w14093. Accessed 24 April 2018.
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Transcribed Image Text:According to the Center for Disease Control and Prevention (CDC), the mean life expectancy in 2015 for non-Hispanic
black females was 78.1 years. Assume that the standard deviation was 15 years, as suggested by the Bureau of
Economic Research.
The distribution of age at death, X, is not normal because it is skewed to the left. Nevertheless, the distribution of the
mean, z, in all possible samples of size n is approximately normal if n is large enough, by the central limit theorem.
Let i be the mean life expectancy in a sample of 100 non-Hispanic black females. Determine the interval centered at the
population mean u such that 95% of sample means i will fall in the interval. Give your answers precise to one decimal.
You may need to use software or a table of z-critical values.
lower limit
уears
upper limit
уears
Murphy, Sherry L, e. al. Deaths: Final Data for 2015, National Vital Satistics Reports, Volume 66, Number 6, November 27, 2017.
https://www.cdc.gov/nchs/datalnvsr/nsrb6nvsrt6 06.pdf. Acessed 24 April 2018.
Ryan D. Edwards, The Cost of Lincertain Life Span, NBER Working Paper Na. 14093 December, 2011. hitp//www.nber.org/papers/w14093. Accessed 24 April
2018.
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