### Critical value of two-sample test of means

Assignment Help Basic Statistics
##### Reference no: EM1393529

Conduct a two-sample test of means. A study by a bank compared the average savings of customers who were depositors for three years or less with those who had been depositors for more than three years.The results of a sample are < or equal mean balance savings 1,200, population standard deviation 100, and sample size 10. > 3 years mean savings balance 1,250, population standard deviation 150, and sample size 15. To test the two groups of customers have equal savings rates, what is the critical value of using a=0.05?

### Previous Q& A

#### Multiple choice questions - membranes

A transmembrane protein in outer membrane of the nuclear envelope would least likely be found later in which one of the following cellular locations?

#### Residual sum of squares

The regression line yˆ2 = 3 + 2x has been fitted to the data points (4,8), (2,5), and (1,2). The residual sum of squares will be:

#### Leprosariums to prevent the spread of disease

In the past, people infected with Hansen's disease were committed to leprosariums to prevent the spread of the disease. Explain why do you think that once treatments became effective.

An important advantage of specialty advertising is its:A versatility B low specific costs C potentially broad reach D ability to significantly lower the cost of sales calls

#### Educational statistics pretests and posttests

Is there a difference in the number of points students earned on their educational statistics pretests and posttests?

#### Define epistemology and ontology

In your own words, define epistemology and ontology. Why are these concepts important to the study of research? How might the concepts influence your future research?

#### Mean score for the exam

If the lowest score you can earn and still be eligible for employment is an 84, what is the mean score for the exam? Round your answer to the nearest tenth.

#### Compute the solute potential of solution

Compute the solute potential of a 0.1 M NaCl solution at 25 degrees. If the concentration of NaCl inside the plant cell is 0.15 M,

#### Percentage of time-operating limit

If a remote's maximum range is 10 feet, what percentage of the time will users attempts to operate the remote outside of its operating limit?

#### Explain department goals with the overall organization

What does it mean to align your department goals with the overall organization? Give an example of an organizational goal and two sales team goals that support it.

### Similar Q& A

#### Normally and non-normally distributed population

The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..

#### Measures of center for the given data

Determine the mean number of times the machine was used per day.

#### Sample and the mean of the population

If it is determined that there is no difference between the population mean being represented by the sample and the mean of the population at large, then:

#### Questions based on the test for population mean

The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?

#### Probability of drawing two diamonds

What is the probability of drawing two diamonds after discarding 5 and 7.

#### Drawing column chart and pie chart for grade book

Draw a column chart from grade book.  Use column illustrating students' names; select one of the tests to plot.

#### Determining critical value if alpha is given

Determine critical value if alpha = 0.05? If p-value for this test is 0.025, this p-value means?

#### Construct a frequency distribution

Construct a frequency distribution (class, tally and frequency) for the data set using the indicated number of classes. In the table, include the midpoint, relative frequencies and cumulative frequencies.

#### Value of the sample mean

A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data: (38.02, 61.98) and (39.95, 60.05). What is the value of the sample mean?

#### Determining p-value of the test-statistic

Calculate the test statistic. Determine the p-value of the test-statistic.

#### Explaining distribution of sample means for samples

Explain distribution of sample means (shape , Expected value , and standard error ) for samples of n=36 selected from population with a mean of  m =100 and standard deviation of s=12.

#### Estimating the mean-median and mode values

What is the arithmetic mean selling price? 