A study by a bank compared the average savings of customers, Ask an Expert

Statistics

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:

< 3 Years > 3 Years
Mean Savings Balance $1,200 $1,250
Population Standard Deviation $100 $250
Sample Size 100 150

find out the test statistic, z.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M998187

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

How can a graph or chart of data help you understand the

How can a graph or chart of data help you understand the results? What is a frequency table? Describe an example where a frequency table can be used in life.

Letnbspnmnbspv denote the normal random variable with

Let N ( m , v ) denote the normal random variable with mean m and variance v . (a) If X is a Standard Normal variable, what is the distribution of the random variable 4 X - 1? (b) If X ~ N (3,1) and Y ~ ...

A 36-year maturity bond with par value 1000 makes

A 36-year maturity bond with par value $1,000 makes semiannual coupon payments at a coupon rate of 14%. What is the EQUIVALENT annual yield to maturity of the bond if the bond sells for $1,080? A 31-year maturity, 9.5% ...

If a wooden car has 30 independent components that all must

If a wooden car has 30 independent components that all must function for the wooden car to operate successfully during a race, and the probability of successful operation for any single component is 0.999, what is the pr ...

Based on labor statistics17nbspof workers in a particular

Based on labor? statistics,17% of workers in a particular profession are female. Complete parts a through e below based on a random sample of 8 workers in this profession. a. What is the probability that exactly one work ...

Emmons corporation has a 02 probability of a return of 054

Emmons Corporation has a 0.2 probability of a return of 0.54, a 0.3 probability of a rate of return of 0.05, and the remaining probability of a 0.1 rate of return. What is the variance in the expected rate of return of E ...

1 prince georges county public schools wants to access the

1) Prince George's County Public Schools wants to access the effectiveness of its new 1st grade reading program. Ten 1st grade classrooms are randomly selected from across the county. What kind of sampling method is bein ...

Question probability and nonprobability are the two general

Question Probability and nonprobability are the two general categories of sampling. Probability sampling uses random selection, whereas nonprobability sampling does not. For example, if you wanted to study the effects of ...

The probability of someone ordering the daily special is 52

The probability of someone ordering the daily special is 52%. If the restaurant expected 96 people for lunch, how many would you expect to order the daily special?

Need help with calculating these problems a research group

Need help with calculating these problems: A research group conducted an extensive survey of 2957 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gather ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert