Question
In: Math
A company announced a "1000 Chips Trial" claiming that every 18 ounce bag of its cookies...
A company announced a "1000 Chips Trial" claiming that every 18 ounce bag of its cookies contained at least 1000 chocolate chips. Students purchased random bags from cookies from different stores and counted the number of chips in each bag. Some of the data is shown below.
1042 1132 1134 1255 1278 1233 1265 1339 1311 1450
Q1--Create a 95% confidence interval for the average number of chips. (SHOW EVERY STEP, I am completely lost on how to do this).
Q2--What percentage of bags will have fewwer then 1000 chips. (SHOW EVERY STEP).
Solutions
Expert Solution
First of all we calculate the mean and standard deviation of the given sample :
Q1
Q2
Probability that bag will have fewer than 1000 chips = P(X<1000)
We use Excel function "NORMSDIST()" as :
Hence, Percentage of bags will have fewer than 1000 chips = 1.86 %
milcah answered 10 months agoRelated Solutions
A company claimed that every 18-ounce bag of their chocolate chip cookies contained at least 1000...
A company claimed that every 18-ounce bag of their chocolate
chip cookies contained at least 1000 chocolate chips. Dedicated
statistics students at a school purchased some randomly selected
bags of cookies and counted the chocolate chips. Some of their data
are given below.
1123 1127 1094 1206 1406 1109 1310 1332 1259 1263 1354 1142 1186
1276 1291 1139
a) Check the assumptions and conditions for inference. Comment
on any concerns you have.
The independence condition ____ satisfied...
The number of chocolate chips in a an 18-ounce bag of Chips Ahoy! Chocolate chip cookies...
The number of chocolate chips in a an 18-ounce bag of Chips
Ahoy! Chocolate chip cookies is approximately normally distributed,
with a mean of 1262 chips and a standard deviation of 118 chips,
according to a study by cades of the US Air Force Academy.
What proportion of 18 ounce bags has more than 1000 chips?
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally...
The number of chocolate chips in an 18-ounce bag of chocolate
chip cookies is approximately normally distributed with a mean of
1252 chips and standard deviation 129 chips.
d) What is the percentile rank of a bag that
contains 1450 chocolate chips?
the number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally...
the number of chocolate chips in an 18-ounce bag of chocolate
chip cookies is approximately normally distributed with a mean of
1252 chips and standard deviation 129 chips.
(a) what is the probability that a randomly selected bag
contains between 1000 and 1500 chocolate chips, inclusive?
(b) what is the probability that a randomly selected bag
contains fewer than 1125 chocolate chips?
(c) what proportion of bags contains more than 1175 chocolate
chips?
(d) what is the percentile rank of...
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally...
The number of chocolate chips in an 18-ounce bag of
chocolate chip cookies is approximately normally distributed with a
mean of 1252 chips and standard deviation of 129
chips.
a. What is the probability that a randomly selected bag contains
between 1000 and 1400 chocolate chips?
b. What is the probability that a randomly selected bag contains
more than 1225 chocolate chips?
c. What is the percentile rank of a bag that contains 1425
chocolate chips
Suppose the lengths of...
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally...
The number of chocolate chips in an 18-ounce bag of chocolate
chip cookies is approximately normally distributed with mean 1252
and standard deviation 129 chips.
(a) What is the probability that a randomly selected bag
contains between 1000 and 1400 chocolate chips?
(b) What is the probability that a randomly selected bag
contains fewer than 1100 chocolate chips?
(c) What proportion of bags contains more than 1225 chocolate
chips?
(d) What is the percentile rank of a...
he number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally...
he number of chocolate chips in an 18-ounce bag of chocolate
chip cookies is approximately normally distributed with a mean of
1252 chips and standard deviation 129 chips.
(a) What is the probability that a randomly selected bag
contains between 1100 and 1400 chocolate chips, inclusive?
(b) What is the probability that a randomly selected bag
contains fewer than 1025 chocolate chips?
(c) What proportion of bags contains more than 1200 chocolate
chips?
(d) What is the percentile rank of...
In 1998, as an advertising campaign, the Nabisco Company announced a “1000 Chips Challenge,” claiming that...
In 1998, as an advertising campaign, the Nabisco Company
announced a “1000 Chips Challenge,” claiming that every 18-ounce
bag of their Chips Ahoy cookies contained at least 1000 chocolate
chips. Dedicated Statistics students at the Air Force Academy (no
kidding) purchased some randomly selected bags of cookies, and
counted the chocolate chips. Some of their data are given below.
(Chance, 12, no. 1[1999])
1219 1214 1087
1200 1419 1121 1325
1345
1244 1258 1356
1132 1191 1270 1295
1135
a)...
In 1998, as an advertising campaign, the Nabisco Company announced a “1000 Chips Challenge,” claiming that...
In 1998, as an advertising campaign, the Nabisco Company
announced a “1000 Chips Challenge,” claiming that every 18-ounce
bag of their Chips Ahoy cookies contained at least 1000 chocolate
chips. Dedicated Statistics students at the Air Force Academy (no
kidding) purchased some randomly selected bags of cookies, and
counted the chocolate chips. Some of their data are given below.
(Chance, 12, no. 1[1999])
1219 1214 1087
1200 1419 1121 1325
1345
1244 1258 1356
1132 1191 1270 1295
1135
a)...
the number of chocolate chips in an 18 oz bag of chocolate chip cookies is approximately...
the number of chocolate chips in an 18 oz bag of
chocolate chip cookies is approximately normally distributed with
1270 in the standard deviation is 130 chips
what is the probability that a randomly-selected bag
contains no more than 1200 chips
what is the probability that a randomly-selected bag
of 30 bags has a random mean that's no more than 1200 chips
what number of chocolate chips in a bag will
correspond to the 15th percentile
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