Question
In: Statistics and Probability
You take a random sample of 12 bags (16 oz. each) of jelly beans. In your...
You take a random sample of 12 bags (16 oz. each) of jelly beans. In your study, the average number of jelly beans in a bag is 395 with a standard deviation of 35 beans. Because these bags are filled by a machine, these are known to be taken from a normal population.
Find and interpret a 96% confidence interval for the true mean number of jelly beans per 16 oz bag.
Solutions
orchestra answered 2 years agoRelated Solutions
From a random sample of 16 bags of chips, sample mean weight is 500 grams and...
From a random sample of 16 bags of chips, sample mean weight is
500 grams and sample standard deviation is 3 grams. Assume that the
population distribution is approximately normal. Answer the
following questions 1 and 2.
1. Construct a 95% confidence interval to estimate the
population mean weight. (i) State the assumptions, (ii) show your
work and (iii) interpret the result in context of the problem.
2. Suppose that you decide to collect a bigger sample
to be more accurate....
We take a random sample of 16 scores from a Math Exam and the sample mean...
We take a random sample of 16 scores from a
Math
Exam and the sample
mean is 80 (the population scores are normally distributed)
. The known
standard deviation = 16. What is the value of Lower Confidence
Limit
at
90% CI.
A random sample of 40 bags of flour is weighed. It is found that the sample...
A random sample of 40 bags of flour is weighed. It is found that
the sample mean is 453.08 grams. All weights of the bags of flour
have a population standard deviation of 5.42 grams. What is the
lower limit of an 80% confidence interval for the population mean
weight?
Select one:
A. No solution
B. 451.983 grams
C. 452.360 grams
D. 452.405 grams
After interviewing a sample of 100 residents of New Taipei City,
you find that the mean...
A random sample of 40 bags of flour is weighed. It is found that the sample...
A random sample of 40 bags of flour is weighed. It is found that
the sample mean is 453.08 gram. All weights of the bags of flour
have a population standard deviation of 5.42 gm. What is the lower
confidence limit (LCL) of an 80% confidence interval for the
population mean weight?
Bags of whole coffee beans are filled automatically on a production line. A machine fills each...
Bags of whole coffee beans are filled automatically on a
production line. A machine fills each bag so that the weight of
coffee beans inside is normally distributed with a mean of 290
grams. The label on the bag, however, states that the weight of
coffee beans inside is 283 grams.
a. What is the standard deviation of bags of coffee beans, if
13% of the bags have a weight below what is stated on the
label?
b. New management...
A random sample of 36 cans of regular Coke had a sample mean of 12.19 oz...
A random sample of 36 cans of regular Coke had a sample mean of
12.19 oz with a standard deviation of 0.11 oz. A sample of 36 cans
of regular Pepsi had a sample mean of 12.29 oz with a standard
deviation of 0.09 oz. Find a 90% confidence interval for the
difference in volume between cans of regular Coke and cans of
regular Pepsi.
A group of students measure the length and width of a random sample of beans. They...
A group of students measure the length and width of a random
sample of beans. They are interested in investigating the
relationship between the length and width. Their summary statistics
are displayed in the table below. All units, if applicable, are
millimeters.
Mean width:
7.647
Stdev width:
0.942
Mean height:
13.924
Stdev height:
1.703
Correlation coefficient:
0.7443
a) The students are interested in using the width of the beans
to predict the height. Calculate the slope of the regression
equation....
A group of students measure the length and width of a random sample of beans. They...
A group of students measure the length and width of a random
sample of beans. They are interested in investigating the
relationship between the length and width. Their summary statistics
are displayed in the table below. All units, if applicable, are
millimeters.
Mean width: 7.439 Stdev width: 0.88 Mean height: 13.625 Stdev
height: 1.825 Correlation coefficient: 0.7963
a) The students are interested in using the width of the beans
to predict the height. Calculate the slope of the regression
equation....
Goods Produced A B C D E Chips (bags) 0 10 12 14 16 Pretzels (bags)...
Goods Produced
A
B
C
D
E
Chips (bags)
0
10
12
14
16
Pretzels (bags)
50
40
30
20
0
How would a technological change that increases the production
of only pretzels affect the production of chips? Explain
. Thenutritionlabelonabagofpotatochipssaysthataoneounceservingofpotatochipshas130calories. A random sample of 35 bags yielded a sample mean of 134 calories with...
.
Thenutritionlabelonabagofpotatochipssaysthataoneounceservingofpotatochipshas130calories.
A random sample of 35 bags yielded a sample mean of 134 calories
with a standard deviation of 17 calories. Is there significant
evidence that the nutrition label does not provide an accurate
measure of calories in the bags of potato chips? Answer this
question using the hypothesis testing framework. Explicitly give
the p-value for your test.
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