Question
In: Statistics and Probability
Meaghan wants to study her friends’ drinking habits. Meaghan knows that people drink, on average, 0.6...
Meaghan wants to study her friends’ drinking habits. Meaghan knows that people drink, on average, 0.6 alcoholic beverages per day, with standard deviation 0.5. Meaghan investigates how many alcoholic drinks her 49 friends drink. Meaghan finds that her group of friends drinks, on average, 0.7 alcoholic beverages per day. Do Meaghan’s friends’ drinking habits differ significantly from people in general. In the provided space, type in the answers to the following questions.
1. Which statistical test would you use to solve this problem?
2. State the null and alternative hypotheses in words.
3. Locate the critical value that defines the critical region.
4. Calculate your statistic.
5. Make a decision with respect to the null hypothesis.
6. Write a concluding sentence in everyday language.
7. Calculate and evaluate Cohen’s d.
Solutions
orchestra answered 1 year agoRelated Solutions
Of the 550 people surveyed about their habit of drinking soda, 242 indicated that they drink...
Of the 550 people surveyed about their habit of drinking soda,
242 indicated that they drink soda everyday. Determine the lower
bound of the 99% confidence interval of the true proportion of the
people who drink soda everyday.
Write your answer with 4 decimal places.
Given below is a correlation matrix from a study of drinking habits of college students. The purpose...
Given below is a correlation matrix from a study of drinking
habits of college students. The purpose of the study is
to examine what affects the amount of alcohol consumed by
students.
Consumption (C) has been measured as
the amount of alcohol consumed per week. Sports (S)
refers to the amount of time spent by the student on sports and
athletics activities per week. Consumption (H) at home refers to
the amount of alcohol consumed by the student’s family at home per...
How might this information affect your water drinking habits? Why should we drink water? Let’s say...
How might this information affect your water drinking
habits?
Why should we drink water?
Let’s say that you and a friend drink the same amount of water
every day, but only one of you becomes thirsty and dehydrated. How
is that possible?
How is dehydration different from water intoxication?
How do electrolytes and water intake relate to
hypertension?
Consider citing or including references to relevant, current
news sources that interest you and support your post and
responses.
The College Alcohol Study interviewed a sample of 2,100 college students about drinking habits and 1,519...
The College Alcohol Study interviewed a sample of 2,100 college
students about drinking habits and 1,519 supported cracking down on
underage drinking. Is there enough evidence to suggest that less
than 75% of all college student support cracking down on underage
drinking?
The owner of a gas station wants to study gasoline purchasing habits of motorists at this...
The owner of a gas station wants to study gasoline purchasing
habits of motorists at this station. He selects a random sample of
60 motorists during a certain week, with the following results: The
amount of gas purchased was; mean = 11.3 gallons, standard
deviation = 3.1 gallons; Eleven motorists purchased premium-grade
gasoline (4 points)
At the 0.05 significance level, is there evidence that the
population mean purchase was different from 10 gallons? (1
point)
Determine the p-value in part...
The owner of a gas station wants to study gasoline purchasing habits of motorists at this...
The owner of a gas station wants to study gasoline purchasing
habits of motorists at this station. He selects a random sample of
60 motorists during a certain week, with the following results: The
amount of gas purchased was; mean = 11.3 gallons, standard
deviation = 3.1 gallons; Eleven motorists purchased premium-grade
gasoline (4 points)
At the 0.05 significance level, is there evidence that the
population mean purchase was different from 10 gallons? (1
point)
Determine the p-value in part...
The Highway Safety Department wants to study the driving habits of individuals. A sample of 34...
The Highway Safety Department wants to study the driving habits
of individuals. A sample of 34 cars traveling on a particular
stretch of highway revealed an average speed of 68.8 miles per hour
with a standard deviation of 9.8 miles per hour. Round to 4 decimal
places.
1.Calculate a 99% confidence interval for the true mean speed of
all cars on this particular stretch of highway.
( , )
2. What sample size is needed to estimate the true average...
The owner of a specialty coffee shop wants to study coffee purchasing habits of customers at...
The owner of a specialty coffee shop wants to study coffee
purchasing habits of customers at her shop. She selects
a random sample of 60 customers during a certain week. Data are
available in the worksheet labeled “Problem 2”
in the spreadsheet.
1. Construct a 90% confidence interval on the proportion of
customers who say they “definitely will”
recommend the specialty coffee shop to family and friends.
Problem 2 Data Set
Note: Y is an indicator variable, i.e., if Y=1,...
The owner of a specialty coffee shop wants to study coffee purchasing habits of customers at...
The owner of a specialty coffee shop wants to study coffee
purchasing habits of customers at her shop. She selects a random
sample of 60 customers during a certain week. Data are available in
the worksheet labeled “Problem 2” in the spreadsheet
Final_SU2020_Data_Sets.xlsx. 1. At the ? = 0.1 level of
significance, is there evidence that more than 50% of the customers
say they “definitely will” recommend the specialty coffee shop to
family and friends? 2. Construct a 90% confidence...
The Highway Safety Department wants to study the driving habits of individuals. A sample of 33...
The Highway Safety Department wants to study the driving habits
of individuals. A sample of 33 cars traveling on a particular
stretch of highway revealed an average speed of 68.2 miles per hour
with a standard deviation of 9.2 miles per hour. Round to 4 decimal
places.
2. What sample size is needed to estimate the true average speed
to within 2.5 mph at 95% confidence? Note: For consistency's sake,
round your t* value to 3 decimal places before calculating...
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