Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Life expectancy in Mexico is equal to the life expectancy in Spain. A new study has been made to see whether this has changed. Records of 240 individuals from Mexico who died recently are selected at random. The 240 individuals lived an average of 71.2 years with a standard deviation of 3.2 years. Records of 295 individuals from Spain who died recently are selected at random and independently. The 295 individuals lived an average of 71.8 years with a standard deviation of 3.1 years. Assume that the population standard deviation of the life expectancy can be estimated by the sample standard deviations, since the samples that are used to compute them are quite large. At the 0.01 level of significance, is there enough evidence to support the claim that the life expectancy, μ1, in Mexico is not equal to the life expectancy, μ2, in Spain anymore? A two-tailed test. What are the null hypothesis:H0: The alternative hypothesis:H1:The type of test statistic: Z t Chi square F :The value of the test statistic:The two critical values at the 0.01 level of significance:Can we support the claim that the life expectancy in Mexico is not equal to the life expectancy in Spain?
A recent drug survey showed an increase in use of drugs and alcohol among local high school students as compared to the national percent.
If a random sample of 5 observations from one population results in a standard deviation of 12 and the other random sample of 7 observations results in a standard deviation of 7.
Marketing and Consumer Behavior After analyzing a database of over 2 million telephone calls, Vonage reported that the mean length of all international calls.
Discuss the potential problem s of multicollinearity and heteroskedasticity.
A research repot from an independent-measures study states that there are significant differences between treatments, F(2, 54) =3.58, p
Combining scores again. The first Stat exam had a mean of 80 and a standard deviation of 4 points; the second had a mean of 70 and a standard deviation.
Allen Machines specializes in developing weed-harvesting equipment that is used to clear small lakes of weeds. Allen Machines is contemplating the construction of a machine that would harvest weeds on narrow rivers and waterways.
The results of a district spelling bee for both girls and boys are normally distributed. the 60 girls have a mean score of 71 with a standard deviation of 6, while the 50 boys have a mean score of 66 points with standard deviation of 5 points.
adult consumers at three fast-food hamburger chains at lunchtime in new york city were approached as they entered the
clifford likes dogs. he wondered how much dog owners spend on their dogs in a year. he hypothesized that dog owners
Estimate, with a 95% confidence interval, the difference in the population means, assuming al = a2.
How many more sheep should be included in the sample if we want to say with 98% confidence that the population mean weight of the Jacob sheep is within 2.0 lb of the sample mean?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd