Reports indicate that graduating seniors in a local high, Ask an Expert

Statistics

Reports indicate that graduating seniors in a local high school have an average (m) reading comprehension score of 72.55 with a standard deviation (σ) of 12.62. As an instructor in a GED program that provides alternative educational opportunities for students, you're curious how seniors in your program compare. Selecting a sample of 25 students from your program and administering the same reading comprehension test, you discover a sample mean (X) of 79.53. Assume that you're working at the .05 level of significance.

a. State an appropriate null hypothesis.

b. What is the value of the calculated test statistic (Z)?

c. State your conclusion.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92658425

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A study of cancer was conducted among 10000 men in the

A study of cancer was conducted among 10,000 men in the United States who were 40-75 years of age. Every two years questionnaires are sent to these individuals, and newly diagnosed cases of various cancers were reported. ...

Size of accounts receivable lo1 the arizona bay corporation

Size of Accounts Receivable [LO1] The Arizona Bay Corporation sells on credit terms of net 30. Its accounts are, on average, four days past due. If annual credit sales are $9.75 million, what is the company's balance she ...

Performance scores on a motor skills task form a normal

Performance scores on a motor skills task form a normal distribution with μ = 20 and σ = 4. A psychologist is using this task to determine the extent to which increased self-awareness affects performance. The prediction ...

1 prince georges county publicnbspschools wants to access

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 ...

Among 140 subjects with positive test results there are 25

Among 140 subjects with positive test? results, there are 25 false positive? results; among 152 negative? results, there are 22 false negative results. If one of the test subjects is randomly? selected, find the probabil ...

The table to the right shows the results of a survey in

The table to the right shows the results of a survey in which 2585 adults from Country A, 1116 adults from Country B, and 1064 adults from Country C were asked if human activity contributes to global warming. Complete pa ...

2 part questionpart 1 what do you think is the item that

2 part question: Part 1: What do you think is the item that accounts for the most cost in any hospital's budget? Can you outline ways to keep this cost under control? Part 2: Do think it is more difficult for a manager t ...

Financial management how can a financial manager use the

Financial Management How can a financial manager use the time value of money(TVM) concept to accomplish this goal?

1 define and discuss how to develop the free cash flow

1. Define and discuss how to develop the Free Cash Flow forecast? 2. Define and discuss how to develop the Terminal Value? 3. Define and discuss how to develop the Discount Rate?

In a pre-election poll a candidate for district attorney

In a pre-election poll, a candidate for district attorney receives 304 of 600 votes. Assuming that the people polled represent a random sample of the voting population, test the claim that a majority of voters support th ...

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