An article suggests a normal distribution with mean 138.3 oz and standard deviation 2.8 oz for the actual contents of jars of a certain type. The stated contents was 136 oz. LAUSE SALT (a) What is the probability that a single jar contains more than the stated contents? (Round your answer to four decimal places.) 0.7939 ✓ (b) Among ten randomly selected jars, what is the probability that at least eight contain more than the stated contents? (Round your answer to four decimal places.) 0.6594 x (c) Assuming that the mean remains at 138.3, to what value would the standard deviation have to be changed so that 95% of all jars contain more than the stated contents? (Round your answer to two decimal places.) 1.39 ✓ oz

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An article suggests a normal distribution with mean 138.3 oz and standard deviation 2.8 oz for the actual contents of jars of a certain type. The stated contents was 136 oz.
LAUSE SALT
(a) What is the probability that a single jar contains more than the stated contents? (Round your answer to four decimal places.)
0.7939
(b) Among ten randomly selected jars, what is the probability that at least eight contain more than the stated contents? (Round your answer to four decimal places.)
0.6594
X
You may need to use the appropriate table in the Appendix of Tables to answer this question.
(c) Assuming that the mean remains at 138.3, to what value would the standard deviation have to be changed so that 95% of all jars contain more than the stated contents? (Round your answer to two decimal places.)
1.39
V Oz
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Transcribed Image Text:An article suggests a normal distribution with mean 138.3 oz and standard deviation 2.8 oz for the actual contents of jars of a certain type. The stated contents was 136 oz. LAUSE SALT (a) What is the probability that a single jar contains more than the stated contents? (Round your answer to four decimal places.) 0.7939 (b) Among ten randomly selected jars, what is the probability that at least eight contain more than the stated contents? (Round your answer to four decimal places.) 0.6594 X You may need to use the appropriate table in the Appendix of Tables to answer this question. (c) Assuming that the mean remains at 138.3, to what value would the standard deviation have to be changed so that 95% of all jars contain more than the stated contents? (Round your answer to two decimal places.) 1.39 V Oz Need Help? Read It Watch It CHER Master it PRACTICE ANO
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