Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assume that the population values has an approximately normal distribution. 93 176 128 92 75 94 116 100 85 (a) Use a calculator with mean and sample standard deviation keys to find sample mean startup cost and sample standard deviation s. (Round your answers to one decimal place.) thousand dollars %3D thousand dollars
Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assume that the population values has an approximately normal distribution. 93 176 128 92 75 94 116 100 85 (a) Use a calculator with mean and sample standard deviation keys to find sample mean startup cost and sample standard deviation s. (Round your answers to one decimal place.) thousand dollars %3D thousand dollars
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Continuous Probability Distributions
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Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
Question
![A WebAssign - SP21
A Section 7.2: Estimating u When a X
A 07.06 WebAssign: Section 7.2: Es X
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(b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price µ of all summer sleeping bags. (Round your answers to
two decimal places.)
lower limit
$4
upper limit
$4
Submit Answer
3. [-14 Points]
DETAILS
BBUNDERSTAT12HS 7.2.016.NVA
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy
Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assume that the population of x
values has an approximately normal distribution.
93 176 128 92 75
94 116 100 85
(a) Use a calculator with mean and sample standard deviation keys to find the sample mean startup cost x and sample standard deviation s. (Round your answers to one decimal place.)
thousand dollars
S =
thousand dollars
(b) Find a 90% confidence interval for the population average startup costs u for candy store franchises. (Round your answers to one decimal place.)
lower limit
thousand dollars
upper limit
thousand dollars
4. [-/5 Points]
DETAILS
BBUNDERSTAT12HS 7.2.017.NVA
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dl. Recently, the patient's total
calcium tests gave the following readings (in mg/dl). Assume that the population of x values has an approximately normal distribution.
91 88 10 3.
о 1
9 4
98
10 0
99
11.2
12 1
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1 9:17](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcefe049b-e315-47f0-a296-c191da050165%2Fa1b5d5e3-cc7b-4870-8554-ae24b111a359%2Fyrd8nss_processed.png&w=3840&q=75)
Transcribed Image Text:A WebAssign - SP21
A Section 7.2: Estimating u When a X
A 07.06 WebAssign: Section 7.2: Es X
+
A webassign.net/web/Student/Assignment-Responses/last?dep=23798469
ABP
E student.fz.k12.mo.us bookmarks
Future Plans
Tyler Student
M
É AP Students - Coll.
A Launch Dashboard
Canvas Dashboard
Calendar
00 Duolingo * MackinVIA
ap stats book
WA ap stats assignmen.
>>
(b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price µ of all summer sleeping bags. (Round your answers to
two decimal places.)
lower limit
$4
upper limit
$4
Submit Answer
3. [-14 Points]
DETAILS
BBUNDERSTAT12HS 7.2.016.NVA
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy
Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assume that the population of x
values has an approximately normal distribution.
93 176 128 92 75
94 116 100 85
(a) Use a calculator with mean and sample standard deviation keys to find the sample mean startup cost x and sample standard deviation s. (Round your answers to one decimal place.)
thousand dollars
S =
thousand dollars
(b) Find a 90% confidence interval for the population average startup costs u for candy store franchises. (Round your answers to one decimal place.)
lower limit
thousand dollars
upper limit
thousand dollars
4. [-/5 Points]
DETAILS
BBUNDERSTAT12HS 7.2.017.NVA
MY NOTES
ASK YOUR TEACHER
PRACTICE ANOTHER
Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dl. Recently, the patient's total
calcium tests gave the following readings (in mg/dl). Assume that the population of x values has an approximately normal distribution.
91 88 10 3.
о 1
9 4
98
10 0
99
11.2
12 1
Sign out
US
1 9:17
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