Confidence interval estimation

Reference no: EM13105595

1. A group of 47 randomly selected students have a mean score of 20.2 with a standard deviation of 4.6 on a placement test. Construct a 90% confidence interval for the mean score, , of all students taking the test.

Reference no: EM13105595

Questions Cloud

What are the training needs in pepsi company : Prepare a 400 word paper utilizing a Learning Team member's organization or one with which you are familiar as well as have access to the necessary information in order to identify an issue that can be improved by developing a training program. Us..

Mean of sampling distribution of sample-mean : Random samples of size 64 are taken from a large population whose mean is 160 and whose standard deviation is 25. What is the mean of the sampling distribution of the sample mean?

Discuss any benefits of diversification achieved : Explain how would you characterize the correlation of returns of the two assets L and M? Discuss any benefits of diversification achieved through creation of the portfolio.

What is the crowding - out effect : Why were those who took out hybrid loans at far greater risk of foreclosure when the Fed began raising interest rates and how are each of the following events likely to affect the value of the dollar relative to the euro?

Confidence interval estimation : A group of 47 randomly selected students have a mean score of 20.2 with a standard deviation of 4.6 on a placement test. Construct a 90% confidence interval for the mean score, , of all students taking the test.

Goods want transporting in the opposite direction : Presume you are the owner driver of a truck, which transports vegetables overnight from the farmers in Florida to the markets in Atlanta.

How americans lives changed due to red scare : Themes of anti-communism preoccupied American media from 1947 to 1954. Main topics included coup in Czechoslovakia, Korean War. How Americans lives changed due to Red Scare

Explain why might there be so much variability : Explain why might there be so much variability among the proportion of sales versus profitability contributed by each of the businesses? Does this mean that Syco is more successful in its insurance business than in its retail bu

Clarification of confidence interval for mean : A random sample of 81 credit sales in a department store showed an average sale of $68.00. Historically, it is known that the standard deviation of the population is $27.00.

User Account

All Pages