Question
Asked Dec 2, 2019
10 views

The amount of coffee that people drink per day is normally distributed with a mean of 17 ounces and a standard deviation of 7 ounces. 35 randomly selected people are surveyed. Round all answers to 4 decimal places where possible

Find the IQR for the average of 35 coffee drinkers.
Q1 =  ounces
Q3 =  ounces
IQR:  ounces

Can you show me the process on a ti84

check_circle

Expert Answer

Step 1

It is given that the mean and standard deviation are 17 and 7, respectively.

By using central limit theorem,

fullscreen
Step 2

Here, the sample size n is 35.

The mean is 17 and the standard deviation is 1.1832 (=7/Sqrt(35)).

Since, the distribution of the population is normal. Hence, the distribution of x bar is normal and x bar follows N(17, 1.1832).

The first quartile using TI-83 is obtained as follows:

  • Enter 2nd > DISTR.
  • Choose InvNorm( .
  • Enter invNorm(0.25,17,1.1832)
  • Click Enter.

From, the output the first quartile is approximately 16.20.

Step 3

The third quartile using TI-83 is obtained as follows:

  • Enter 2nd > DISTR.
  • Choose InvNorm( .
  • Enter invNorm(0.75,17,1.1832)
  • Click Enter.

From, the output th...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: study of a121 between the included thot the re waS bottle frd Descrbe the < an associ tion oetuween ...

A: The population is provided as of 500 signatures out of 30 signatures is to be sampled out. The sampl...

question_answer

Q: Receipt Twitter Activity Movie 14763 219509 The Devil Inside 5796 6405 The Dictator 15829 165128 Par...

A: Hello there! there are more than three subparts in the question. According to our policies we cannot...

question_answer

Q: A surgery intern has conducted a study of the sleeping habits of her colleagues and has developed a ...

A: Introduction:For each value of x (number of hours working on one shift), the value of y (number of h...

question_answer

Q: Find the indicated probability using the standard normal distribution.   ​P(- 0.25&lt;z&lt;0​)

A: z-score:Consider the random variable X that follows a distribution with mean µ and the standard devi...

question_answer

Q: Movie Twitter Activity Receipts The Devil Inside 219509 14763 The Dictator 6405 ...

A: a).Step-by-step procedure to obtain the correlation coefficient using Excel Mega stat is given below...

question_answer

Q: To test Upper H0​: muμequals=60 versus Upper H1​: muμless than&lt;60​, a random sample of size n=24 ...

A: GivenNull Hypothesis Ho : µ = 60Alternate Hypothesis Ha : µ  &lt; 60sample size n = 24population is ...

question_answer

Q: D) 0.443 zC/'n 25) If the correlation coefficient r is equal to 0.526, find the coefficient of nonde...

A: Coefficient of determination:It also referred as R-square. The coefficient of determination is the s...

question_answer

Q: The total cholesterol levels of a sample of men aged 35-44 are normally distributed with a mean of 2...

A: Given:μ=219 and σ=36.6Sample size = n = 247We have to find how many would you expect to have a total...

question_answer

Q: A transect is an archaeological study area that is 1/5 mile wide and 1 mile long. A site in a transe...

A: Note:Hey there! Thank you for posting the question. However, since your question has more than 3sub ...