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 =  ouncesQ3 =  ouncesIQR:  ouncesCan you show the process on a ti84

Question
Asked Dec 2, 2019
2 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 the process on a ti84

check_circle

Expert Answer

Step 1

The standard deviation for 35 people is,

σ/ √n=7/ √35=1.1832

Q1 is the 25th percentile and Q3 is the 75th percentile.

The value of Q1 is 16.2019, which is obtained by using below steps

  • Press 2nd VARS
  • Select invNorm(
  • Enter
  • Type (0.25,17,1.1832)
  • Enter

Output obtained by Ti 83 calculator is given below:

TEXAS INSTRUMENTS
TI-83 Plus
inyNormco.25, 17,
1.1832)
16.20194373
ww
E
wINDOW
Ya
200M
TRACE
GRAPH
QUT
MODE
DEL
2nd
A-LOCK
LINK
UST
ALPHA
STAT
DISTR
TEST
ANGLE
DRAW
PROM
MATH
APPS
VARS
CLEAR
SN-
COs
TAN
WATRK
SIN
COS
TAN
10
LOG
X
L4
LA
LN
L3
RCL
STO
ANS
OFF
(-)
ON
ENTER
help_outline

Image Transcriptionclose

TEXAS INSTRUMENTS TI-83 Plus inyNormco.25, 17, 1.1832) 16.20194373 ww E wINDOW Ya 200M TRACE GRAPH QUT MODE DEL 2nd A-LOCK LINK UST ALPHA STAT DISTR TEST ANGLE DRAW PROM MATH APPS VARS CLEAR SN- COs TAN WATRK SIN COS TAN 10 LOG X L4 LA LN L3 RCL STO ANS OFF (-) ON ENTER

fullscreen
Step 2

The value of Q2 is 17.7981, which is obtained by using below steps

  • Press 2nd VARS
  • Select invNorm(
  • Enter
  • Type (0.75,17,1.1832)...
TEXAS INSTRUMENTS
TI-83 Plus
Done
inyNormco.75, 17,
1.1832)
17.79805627
TRACE
QUIT
MODE
2nd
DEL
A-LOCK
LINE
uST
ALPHA
STAT
TEST
ANGAE
DRAW
DISTR
MATH
PRGM
APPS
VARS
CLEAR
cosr TAN
sw
MATRE
SIN
COs
TAN
LOGI
LN
MEM
RCL
STO
0
(-)
ON
ENTER
help_outline

Image Transcriptionclose

TEXAS INSTRUMENTS TI-83 Plus Done inyNormco.75, 17, 1.1832) 17.79805627 TRACE QUIT MODE 2nd DEL A-LOCK LINE uST ALPHA STAT TEST ANGAE DRAW DISTR MATH PRGM APPS VARS CLEAR cosr TAN sw MATRE SIN COs TAN LOGI LN MEM RCL STO 0 (-) ON ENTER

fullscreen

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

Measures

Related Statistics Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Listed below are prices in dollars for one night at different hotels in a certain region. Find the r...

A: Step-by-step procedure to obtain the range, variance, and standard deviation using Excel:In Excel sh...

question_answer

Q: 39) A contingency table is made up of 8 rows and 4 columns. How many degrees of freedom are present?...

A: 39) From the given information, a contingency table made up of 8 rows and 4 columns. The degrees of ...

question_answer

Q: Please help with #85

A: Introduction:The null and alternative hypotheses are as follows:H0: μ ≥ 2.5 hours, vs. H1: μ < 2....

question_answer

Q: Two - Proportions1. The drug Prevnar is a vaccine meant to prevent certain types of bacterial mening...

A: Introduction:Denote π1, π2 as the true proportions of infants feeling drowsiness after the second do...

question_answer

Q: The first picture is the actual question i have to answer using section 3 which is shown in the seco...

A: Introduction:The exponentially distributed random variable X has parameter θ.The probability density...

question_answer

Q: Describe the error in the conclusion. Given: There is a linear correlation between the number of cig...

A: It is given that there is a linear correlation between the number of cigarettes smoked and the pulse...

question_answer

Q: 36% of working mothers do not have enough money to cover their health insurance deductibles. You ran...

A: A binomial distribution is used when an experiment has two possible outcomes, such as success and fa...

question_answer

Q: Company XYZ know that replacement times for the quartz time pieces it produces are normally distribu...

A: The probability that a randomly selected quartz time piece will have a replacement time less than 13...

question_answer

Q: Listed below are the numbers of words spoken in a day by each member of six different couples. Use a...

A: Given Data