To find mean standard deviation and confidence, Ask an Expert

Statistics

To find mean, standard deviation and confidence interval.

Consider the following data for two independent random samples taken from two normal populations.

Sample 1:	10	7	13	7	9	8
Sample 2:	8	7	8	4	6	9

a. work out the two sample means.

b. find out the two standard deviations

c. what is the point estimate of the difference between the two population means?

d. what is the 90 percent confidence interval estimate of the difference between two population means.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M920732

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A certain process is known to produce non-conforming items

A certain process is known to produce non-conforming items 20% of the time. A char- acteristic of the units produced by this process are currently being monitored for quality. Samples of size 15 are selected, and each it ...

Abbb-rated corporate bond has a yield to maturity of 128

A? BBB-rated corporate bond has a yield to maturity of 12.8 %. A U.S. treasury security has a yield to maturity of 11.4 %. These yields are quoted as APRs with semiannual compounding. Both bonds pay? semi-annual coupons ...

One study based on responses from 1016 randomly selected

One? study, based on responses from 1,016 randomly selected? teenagers, concluded that 44?% of teenagers cite grades as their greatest source of pressure. Use a 0.05 significance level to test the claim that fewer than h ...

If the return on stock a in year 1 was 11 in year 2 was

If the return on stock A in year 1 was 11 %, in year 2 was -10 %, in year 3 was -4 % and in year 4 was 2 %, what was the standard deviation of returns for stock A over this four year period? (Round your answer to 1 decim ...

What are the minimum first quartile median third quartile

What are the minimum, first quartile, median, third quartile, maximum, interquartile range, and range of the data set below? Make a box-and- whisker plot. 25, 25, 30, 35, 45, 45, 50, 55, 60, 60

Briefly summarize the partnership business structure and

Briefly summarize the partnership business structure and the equity rights partners have, both in the context of managerial rights and ownership.

When carolinas house burned down she lost household items

When Carolina's house burned down, she lost household items worth a total of $145,000. Her house was insured for $245,000, and her homeowner's policy provided coverage for personal belongings up to 70 percent of the insu ...

A manufacturer of cereal has a machine that when working

A manufacturer of cereal has a machine that, when working properly, puts 20 ounces of cereal on average into a box with a standard deviation of 1 ounce. Every morning workers weigh 25 filled boxes. If the average weight ...

Want the 98 confidence interval when the sample size is 50

Want the 98% confidence interval when the sample size is 50, sample mean is 42 and sample standard deviation is 5. Keep three decimal places in your response.

Determine the sample size needed to construct a 90

Determine the sample size needed to construct a 90?% confidence interval to estimate the average GPA for the student population at a college with a margin of error equal to 0.5. Assume the standard deviation of the GPA f ...

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