There is a theory that people who drink caffeine can run longer than those who do...

There is a theory that people who drink caffeine can run longer than those who do not. To test this theory a random sample of seven people who drink caffeine and a random sample of seven people who do not drink caffeine was obtained and their length of time they could run non-stop was measured, in seconds.

non caffeine drinkers	359	280	138	227	203	184	231
caffeine drinkers	394	477	439	428	391	488	454

At the 5% significance level, can you conclude that those who drink caffeine can run longer than those who do not?

are the samples independent or dependent?

if independent, would using dependent samples have been better? why or why not? if dependent, explain why dependent samples were used.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Why some older adults who have a positive image of aging live longer than those with...

Why some older adults who have a positive image of aging live longer than those with a negative image of aging?

could cost variances be caused by the actions of people other than those who are "typically"...

could cost variances be caused by the actions of people other than those who are "typically" responsible for such variances in the organization? What would be some examples?

An insurance company believes that people can be divided into two classes: those who are accident...

An insurance company believes that people can be divided into two classes: those who are accident prone and those who are not. Their statistics show that an accident prone person will have an accident within a year with a probability of 0.4, whereas the probability for a nonaccident prone person is 0.2. It is assumed that 30% of the population is accident prone. Given that a new policyholder has an accident within a year of purchasing a policy, what is...

B) An insurance company believes that people can be divided into two categories; those who are...

B) An insurance company believes that people can be divided into two categories; those who are accident prone and those who are not. The company’s statistics show that an accident-prone person will have a car accident within a one-year period with probability 0.4, whereas this probability decreases to 0.2 for a person who is not accident prone. The data also suggest that 30% of the population is accident prone. What is the probability that a new policyholder will have an...

People who eat lots of fruits and vegetables have lower rates of colon cancer than those...

People who eat lots of fruits and vegetables have lower rates of colon cancer than those who eat little of these foods. Fruits and vegetables are rich in "antioxidants" such as vitamins A, C, and E. Will taking antioxidants help prevent colon cancer? A medical experiment studied this question with 864 people who were at risk of colon cancer. The subjects were divided into four groups: daily beta-carotene, daily vitamins C and E, all three vitamins every day, or daily...

Research indicates that we often form more positive impressions of beautiful people than of those who...

Research indicates that we often form more positive impressions of beautiful people than of those who are physically unattractive. Explain how advertisements, movies, and children's fairy tales might encourage this tendency. Use your knowledge of the factors that facilitate interpersonal attraction to suggest how people could be influenced to feel more positively about those who are physically unattractive.

How do we differentiate between people who are rude or mean versus those who meet diagnostic...

How do we differentiate between people who are rude or mean versus those who meet diagnostic criteria for antisocial personality disorder?

What do you say to those who argue that discriminating against LGBT people (not serving, not...

What do you say to those who argue that discriminating against LGBT people (not serving, not hiring…) is permissible and should be legal if your religious belief tells you to do so?

Listed below are measured amounts of caffeine (mg per 12oz of drink) obtained in one can...

Listed below are measured amounts of caffeine (mg per 12oz of drink) obtained in one can from each of 14 brands. Find the range, variance, and standard deviation for the given sample data. Include appropriate units in the results. Are the statistics representative of the population of all cans of the same 14 brands consumed? 49 40 34 30 0 34 33 59 56 39 46 53 0 0 The range of the sample data is nothing ▼ brands squared...

“Unexpected inflation is more beneficial to those who save than those who borrow.” Evaluate this statement....

“Unexpected inflation is more beneficial to those who save than those who borrow.” Evaluate this statement. How does your answer change if the inflation is expected? Please elaborate

Subjects