Question

Asked May 29, 2019

26 views

Part A, B, C

Step 1

Here, the population standard deviation is unknown, so the t-distribution is used.

It is provided that n_{1} = n_{2} = 400.

The required assumptions are:

Two population variances are equal and the population data follows normal distribution.

**a.**

The formula to calculate the 95% confidence interval for the difference between the two population means is:

Step 2

The calculations are shown below:

Step 3

Thus, the 95% confidence interval to estimate the ...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: The number of unhealthy days based on the AQI ( Air Quality Index) for a random sample of metropolit...

A: Confidence interval:The (1-α) % confidence interval for population mean µ, when σ is unknown is give...

Q: The government of a large city needs to determine whether the city's residents will support the bui...

A: Solution:Reasons for incorrect options:Opinions of other city residents who do not have children in ...

Q: 2.) Two distinct fair dice are rolled at the same time and the number of dots appearing on both are ...

A: Probability that the sum is 3It is possible only in following combinations:Dice one has 1 dice and d...

Q: In a study of 420,077 cell phone users, 107 subjects developed cancer of the brain or nervous system...

A: Given hypothesis test let p be the proportion of cellphone users develop cancer or brain or nervous ...

Q: Suppose x has a distribution with μ = 60 and σ = 17. (a) If random samples of size n = 16 are select...

A: Note:Hi there! Thank you for posting the question. The Part (b) of your question asks about the “x d...

Q: I want you to come up with one study idea that would use a one sample chi square and one study that ...

A: The one sample Chi-square test is also called as Chi-square goodness of fit, which is used to decide...

Q: Statistics Question

A: Solution:Computation of equation of the regression line:Step-by-step EXCEL procedure to find the equ...

Q: List and describe two of the common types of explanations for statistical relationships (other than ...

A: Common types of explanations for statistical relationships:The common types of explanations for stat...

Q: Do heavier cars really use more gasoline? Suppose a car is chosen at random. Let x be the weight of ...

A: Hello there! There are more than three sub parts in the given quesiton. According to our policies ca...