A manufacturer knows that their items have a lengths that are approximately normally distributed, with a...
A manufacturer knows that their items have a lengths that are
approximately normally distributed, with a mean of 5.7 inches, and
standard deviation of 1.4 inches.
If 36 items are chosen at random, what is the probability that
their mean length is greater than 5.5 inches?
According to a survey, 10% of Americans are afraid to fly.
Suppose 1100 Americans are sampled.
a) What is the probability that 121 or more americans in the survey
are afraid to fly? Write your answer as a percentage rounded to two
decimal places.
b) What is the probability that 165 or more americans in the survey
are afraid to fly? Write your answer as a percentage rounded to two
decimal places.
c) What is the probability that 8% or less of the americans
surveyed answered they were afraid to fly? Write your answer as a
percentage rounded to two decimal places.
Homework Answers
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A manufacturer knows that their items have a lengths that are
approximately normally distributed, with a...
According to a survey, 10% of Americans are afraid to fly. Suppose 1,100 Americans are sampled....
According to a survey, 10% of Americans are afraid to fly. Suppose 1,100 Americans are sampled. What is the probability percentage that 121 or more Americans in the survey are afraid to fly? Round the percent to two decimal places. to find answer What is the probability percentage that 165 or more Americans in the survey are afraid to fly? Round the percent to two decimal places. to find answer What is the probability percentage that 8% or less of...
Question 1 A manufacturer knows that their items have a lengths that are approximately normally distributed,...
Question 1 A manufacturer knows that their items have a lengths that are approximately normally distributed, with a mean of 16.7 inches, and standard deviation of 2.7 inches. If 41 items are chosen at random, what is the probability that their mean length is greater than 16.7 inches? (Round answer to four decimal places) Question Help: Message instructor Submit Question
A manufacturer knows that their items have a lengths that are skewed right, with a mean...
A manufacturer knows that their items have a lengths that are skewed right, with a mean of 8.9 inches, and standard deviation of 0.6 inches. If 49 items are chosen at random, what is the probability that their mean length is greater than 9.1 inches? (Round answer to four decimal places)
A manufacturer knows that their items have a lengths that are skewed right, with a mean...
A manufacturer knows that their items have a lengths that are skewed right, with a mean of 14 inches, and standard deviation of 3.1 inches. If 35 items are chosen at random, what is the probability that their mean length is greater than 14.4 inches? (Round answer to four decimal places)
A manufacturer knows that their items have a normally distributed length, with a mean of 18...
A manufacturer knows that their items have a normally distributed length, with a mean of 18 inches, and standard deviation of 5.7 inches. If one item is chosen at random, what is the probability that it is less than 13 inches long? A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.7 years, and standard deviation of 0.7 years. If you randomly purchase one item, what is the probability it will last longer than...
A manufacturer knows that their items have a normally distributed length, with a mean of 11.5...
A manufacturer knows that their items have a normally distributed length, with a mean of 11.5 inches, and standard deviation of 1.7 inches. If 6 items are chosen at random, what is the probability that their mean length is less than 13.2 inches? Round your answer to four places after the decimal.
Finding Probabilities in Normal Distributions A manufacturer produces items whose lengths are normally distributed with a...
Finding Probabilities in Normal Distributions A manufacturer produces items whose lengths are normally distributed with a mean of 19.1 inches and standard deviation of 5.5 inches. If one item is chosen at random, what is the probability that it's length is less than 19.6 inches? Round answer to 3 decimal places.
Quesuu A manufacturer knows that their items have a lengths that are skewed right, with a...
Quesuu A manufacturer knows that their items have a lengths that are skewed right, with a mean of 11 inches, and standard deviation of 3.4 inches. If 35 items are chosen at random, what is the probability that their mean length is greater than 12.2 inches?
1) A manufacturer knows that their items have a normally distributed length, with a mean of...
1) A manufacturer knows that their items have a normally distributed length, with a mean of 11.9 inches, and standard deviation of 1.4 inches. If 15 items are chosen at random, what is the probability that their mean length is less than 12.4 inches? 2) A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4.2 years, and standard deviation of 0.8 years. If you randomly purchase 2 items, what is the probability that their...
4. A manufacturer knows that their items have a normally distributed lifespan, with a mean of...
4. A manufacturer knows that their items have a normally distributed lifespan, with a mean of 14.4 years, and standard deviation of 3.2 years. If you randomly purchase 21 items, what is the probability that their mean life will be longer than 15 years? (Give answer to 4 decimal places.) 5. A particular fruit's weights are normally distributed, with a mean of 704 grams and a standard deviation of 12 grams. If you pick 12 fruit at random, what is...
Question 1 A manufacturer knows that their items have a lengths that are approximately normally distributed, with a mean of 16.7 inches, and standard deviation of 2.7 inches. If 41 items are chosen at random, what is the probability that their mean length is greater than 16.7 inches? (Round answer to four decimal places) Question Help: Message instructor Submit Question
Quesuu A manufacturer knows that their items have a lengths that are skewed right, with a mean of 11 inches, and standard deviation of 3.4 inches. If 35 items are chosen at random, what is the probability that their mean length is greater than 12.2 inches?
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