Construct a 95 confidence interval for the difference m1-m2, Ask an Expert

Statistics

For a study conducted by the research department of a pharmaceutical company, 205 randomly selected individuals were asked to report the amount of money they spend annually on prescription allergy relief medication. The sample mean was found to be $17.60 with a standard deviation of $5.70. A random sample of 220 individuals was selected independently of the first sample. These individuals reported their annual spending on non-prescription allergy relief medication. The mean of the second sample was found to be 18.40 with a standard deviation of $4.20 . As the sample sizes were quite large, it was assumed that the respective population standard deviations of the spending for prescription and non-prescription allergy relief medication could be estimated as the respective sample standard deviation values given above. Construct a 95% confidence interval for the difference M1-M2 between the mean spending on prescription allergy relief medication (M1) and the mean spending on non-prescription allergy relief medication (M2).

1. What is the lower limit of the 95% confidence interval?
2. What is the upper limit of the 95% confidence interval?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9444302

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

You hold a stock with price 100 that can increase by 10 or

You hold a stock with price $100 that can increase by 10% or decrease by 10% m a year. The interest rate is 5% a) Suppose that you want to ensure that you'll get a minimum of $I00 in a year regardless of the evolution of ...

In a sample of 20 cups of coffee at the local coffee shop

In a sample of 20 cups of coffee at the local coffee shop, the average temperature was 162.5 degrees with a standard deviation of 14.1 degrees. What would be the 95% confidence interval for the temperature of your cup of ...

What statistic was calculated to determine differences

What statistic was calculated to determine differences between the intervention and control groups for the lumbar and femur neck BMDs? Were the groups significantly different for BMDs?

A basket contains 5 bananas and 5 apples each of ten people

A basket contains 5 bananas and 5 apples. Each of ten people picks two fruits at random from the basket without replacement. (a) What is the probability that the first people picks one apple and one banana? (b) What is t ...

Consider the following cash flowsyear cash flow0 -59001

Consider the following cash flows: Year Cash Flow 0 -$5,900 1 2,000 2 2,700 3 1,500 4 900 What is the payback period for the above set of cash flows? In years

Using a telephone survey of 400 randomly selected

Using a telephone survey of 400 randomly selected registered voters, he solicits both their party identification and whether or not they had read the newspaper that day. The results are displayed in the following cross-t ...

Vang corps stock price at the end of last year was 3350 and

Vang Corp.'s stock price at the end of last year was $33.50 and its earnings per share for the year were $2.30. What was its P/E ratio?

Sals market receives a box of jen amp barrys fast fresh

Sal's Market receives a box of Jen & Barry's Fast Fresh Salad BagsTM. Each box contains 16 Caesar salad bags, 20 tossed salad bags, and 12 shredded cabbage bags. Suppose that each type salad bag has an equal chance of be ...

A researcher working at a particular company wants to know

A researcher working at a particular company wants to know if workers' health would improve if they were given extra days 'off. In this company, all workers undergo a standard physical exam twice a year and after each ex ...

A blaster rifle manufacturing facility on naboo has 6500

A blaster rifle manufacturing facility on Naboo has 6,500 employees. The employees were asked whether they preferred a four-day work week (10 hours per day), a five- day work week (8 hours per day), or flexible hours. Yo ...

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