iv. Point estimate: Select an answer |(Round the answer to 3 decimal places) v. Confidence level % and a also and 1 - o Critical values: (Round the answer to 3 decimal places) • left- vi. Margin of error (if applicable): vii. Lower bound: right- |(Round the answer to 3 decimal places) |(Round the answer to 3 decimal places) viii. Upper bound: (Round the answer to 3 decimal places) ix. Confidence interval:( x. Interpretation: We are % confident that the true population variance is between and

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please answer: iv, v, vi

iv: 

sample variance 

sample mean 

sample proportion 

 

For a certain drug, based on standards set by the United States Pharmacopeia (USP) - an official public
standards-setting authority for all prescription and over-the-counter medicines and other health care
products manufactured or sold in the United States, a standard deviation of capsule weights of less than 2
mg is acceptable. A sample of 15 capsules was taken and the weights are provided below:
100.5
99.6
100.7
100
99.8
100.3
101
100.4
98.7
99.9
98.8
99.2
99.7
98.6
99.2
The mean of the data set is 99.8; the sample standard deviation is 0.75; if the normality plot is not
provided you may assume that the capsule weights are normally distributed.
Construct a 90% confidence interval for the variance (standard deviation) of all capsule weight.
i. Procedure: Select an answer
ii. Assumptions: (select everything that applies)
O Sample size is greater than 30
O Population standard deviation is unknown
O Simple random sample
O Population standard deviation is known
O Normal population
O The number of positive and negative responses are both greater than 10
iii. Unknown parameter: Select an answer
Transcribed Image Text:For a certain drug, based on standards set by the United States Pharmacopeia (USP) - an official public standards-setting authority for all prescription and over-the-counter medicines and other health care products manufactured or sold in the United States, a standard deviation of capsule weights of less than 2 mg is acceptable. A sample of 15 capsules was taken and the weights are provided below: 100.5 99.6 100.7 100 99.8 100.3 101 100.4 98.7 99.9 98.8 99.2 99.7 98.6 99.2 The mean of the data set is 99.8; the sample standard deviation is 0.75; if the normality plot is not provided you may assume that the capsule weights are normally distributed. Construct a 90% confidence interval for the variance (standard deviation) of all capsule weight. i. Procedure: Select an answer ii. Assumptions: (select everything that applies) O Sample size is greater than 30 O Population standard deviation is unknown O Simple random sample O Population standard deviation is known O Normal population O The number of positive and negative responses are both greater than 10 iii. Unknown parameter: Select an answer
iv. Point estimate: (Select an answer
(Round the answer to 3 decimal places)
v. Confidence level
% and a =
also
a
and 1
2
o Critical values: (Round the answer to 3 decimal places)
• left-
right=
vi. Margin of error (if applicable):
(Round the answer to 3 decimal places)
vii. Lower bound:
(Round the answer to 3 decimal places)
viii. Upper bound:
(Round the answer to 3 decimal places)
ix. Confidence interval:(
x. Interpretation: We are
% confident that the true population variance is between
and
Based on the confidence interval, is it reasonable to believe that the population variance is greater than
1.44? Explain.
Cal
Transcribed Image Text:iv. Point estimate: (Select an answer (Round the answer to 3 decimal places) v. Confidence level % and a = also a and 1 2 o Critical values: (Round the answer to 3 decimal places) • left- right= vi. Margin of error (if applicable): (Round the answer to 3 decimal places) vii. Lower bound: (Round the answer to 3 decimal places) viii. Upper bound: (Round the answer to 3 decimal places) ix. Confidence interval:( x. Interpretation: We are % confident that the true population variance is between and Based on the confidence interval, is it reasonable to believe that the population variance is greater than 1.44? Explain. Cal
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