Hypothesis test and one-tailed z-test

Assignment Help Basic Statistics

Reference no: EM13111361

According to the historical data, the life expectancy in France is less than or equal to the life expectancy in Germany. A new study has been made to see whether this has changed. Records of 300 individuals from France who died recently are selected at random. The 300 individuals lived an average of 78.2 years with a standard deviation of 7.4 years. Records of 280 individuals from Germany who died recently are selected at random and independently. The 280 individuals lived an average of 77 years with a standard deviation of 6.5 years. Assume that the population standard deviations of the life expectancy's can be estimated by the sample standard deviations. Since the samples that are used to compute them are quite large. At the .05 level of significance, is there enough evidence to support the claim that the life expectancy in France is greater than the life expectancy in Germany?

Reference no: EM13111361

Questions Cloud

Hypotheses for right-tailed test : State the hypotheses for a right-tailed test. Obtain a test statistic and p-value assuming unequal variances. Why might the sample data not follow a normal, bell-shaped curve? If not, how might this affect your conclusions?

Which describes the secretory phase of the menstrual cycle : Which of the following describes the secretory phase of the menstrual cycle?

Calculate population correlation coefficient : Calculate the following statement- A very large sample size in a regression problem will always produce useful results. 1. It will not produce important results not necessarily useful results. We might be quite definite that the population correlat..

How does red bone marrow produce blood cells : How does red bone marrow produce blood cells that function in the body's immune response?

Hypothesis test and one-tailed z-test : According to the historical data, the life expectancy in France is less than or equal to the life expectancy in Germany. A new study has been made to see whether this has changed.

Determine if the population regression line slope : Evaluate the following statement- A high r2 means a significant regression. 1. Merely if the sample size is large enough. The t statistic must be consulted to determine if the population regression line slope is considerably different from zero

Which of are considered male secondary sex characteristics : Which of the following are considered male secondary sex characteristics?

Formal hypothesis testing : Can the formal hypothesis testing approach be used for nonparametric tests? How are parametric and nonparametric statistics different?

What recourse, if any does partner have against the bank : What recourse, if any does PARTNER have against the bank. Make sure you review the material for multiple payees and the corresponding code sections before you answer. Include references to code sections in your answer. The answer should be half a pag..

User Account

All Pages