(Answered) A researcher would like to investigate whether or not

Statistics

A researcher would like to investigate whether or not college education can affect the IQ of students. She gathers 8 students and has them all take the IQ tests in their first and last years of college to test this hypothesis using an alpha level of .01. Below are the data:

1^st year 4^th year

110 90

120 98

100 100

90 110

124 100

102 120

110 110

123 120

What is the appropriate test?

State the null hypothesis and the alternative hypothesis:

Find the critical value: +- _____

Calculate the obtained statistic:

Make a decision:

What does your decision mean?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92819548
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Lee smith imports paid a 100 per share annual dividend last

Lee Smith Imports paid a $1.00 per share annual dividend last week. Dividends are expected to increase by 5% annually. What is one share of this stock worth to you today if the appropriate discount rate is 14%? a. $7.14 ...

Te proportion of people who love dogs is known to be 75

The proportion of people who love dogs is known to be 75 % Australia wide. A town in far north Queensland is often different in many aspects to the rest of Australia. When 88 families were sampled the proportion who love ...

How does the cost of capital affect capital investments

How does the cost of capital affect capital investments that the firm makes? Cite examples.

What is the 99 confidence interval for a sample of 52 seat

What is the 99% confidence interval for a sample of 52 seat belts that have a mean length of 85.6 inches long and a standard deviation of 3.8 inches?

Great start to our discussion on short term planning and

Great start to our discussion on short term planning and the operating and cash cycles. talk about if every businesses have similar operating cycles? If not give examples of how and why they are different? Give referen ...

Prior data indicates if a planter machine is operating

Prior data indicates if a planter machine is operating "properly," the length of the planter produced by the machine can be modeled as being normally distributed with a mean of 107 centimeters and a standard deviation of ...

A researcher records the following body mass index bmi

A researcher records the following body mass index (BMI) scores for a group of participants: 29.1 1.3 (M SD). Participants who score between 26 and 30 on this scale are categorized as overweight. What proportion of parti ...

Describe the steps you tookthere are 652 males 396 say they

Describe the steps you took. There are 652 males, 396 say they have been to dentist in past year. Give a confidence interval for 90% of the population proportion.

A laboratory worker finds that the 3 of his blood samples

A laboratory worker finds that the 3% of his blood samples test positive for the HIV virus. In a random sample of 70 blood tests, what is the mean number that test positive for the HIV virus? (Round your answer to 1 deci ...

Returns on stocks x and y are listed belowperiod 1 2 3 4 5

Returns on stocks X and Y are listed below: Period 1 2 3 4 5 6 7 Stock X 4%7%-2%40%0%10%-1% Stock Y 2%-5%7%4%6%11%-4% Consider a portfolio of 10% stock X and 90% stock Y. What is the (population) standard deviation of po ...

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