Question 1 A manufacturer knows that their items have a lengths that are approximately normally distributed,...
Calculator Submit Question Question 7 A manufacturer knows that their items have a normally distributed length, with a mean of 8.8 inches, and standard deviation of 1.8 inches. If one item is chosen at random, what is the probability that it is less than 4.6 inches long? Question Help: Message instructor Calculator Submit Question
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...
Question 3: a.) A manufacturer knows that their items have a normally distributed length, with a mean of 19.6 inches, and standard deviation of 2.4 inches. If 4 items are chosen at random, what is the probability that their mean length is less than 17.5 inches? b.) A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.5 years, and standard deviation of 0.7 years. If you randomly purchase 14 items, what is the probability...
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 18.1 inches, and standard deviation of 3.1 inches. If 5 items are chosen at random, what is the probability that their mean length is less than 20.7 inches? P(< 20.7) - Submit
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.
1) a) A manufacturer knows that their items have a normally distributed length, with a mean of 13.4 inches, and standard deviation of 2 inches. If one item is chosen at random, what is the probability that it is less than 7.5 inches long? b) A manufacturer knows that their items lifespans are normally distributed with mean = 14.2 and standard deviation = 3.9. What proportion of the items' lifespans will be longer than 25 years? c) A particular fruit's...
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 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 18.8 inches, and standard deviation of 1.5 inches. If 10 items are chosen at random, what is the probability that their mean length is less than 17.7 inches?