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 mean life will be longer than 4 years?
3) A particular fruit's weights are normally distributed, with a
mean of 465 grams and a standard deviation of 36 grams.
If you pick 11 fruit at random, what is the probability that their
mean weight will be between 431 grams and 491 grams
4)
A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 6.8 years, and standard
deviation of 1.5 years.
If 13 items are picked at random, 7% of the time their mean life
will be less than how many years?
Give your answer to one decimal place.
5)
A particular fruit's weights are normally distributed, with a
mean of 643 grams and a standard deviation of 24 grams.
If you pick 10 fruits at random, then 7% of the time, their mean
weight will be greater than how many grams?
Give your answer to the nearest gram.
1) A manufacturer knows that their items have a normally distributed length, with a mean of...
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...
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...
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...
Question 11 A manufacturer knows that their items have a normally distributed length, with a mean of 15.6 inches, and standard deviation of 4.7 inches. If 23 items are chosen at random, what is the probability that their mean length is less than 18.1 inches? Pa < 18.1) = Submit Question Question 12 BO A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.3 years, and standard deviation of 2.7 years. If you randomly...
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 the probability that their mean weight will be between 692 grams and 701 grams (Give answer to 4 decimal places.) 6. A particular fruit's weights are normally distributed, with a mean of 286 grams and a standard deviation of 18 grams. If you pick 25 fruit at random, what is...
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 18.8 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?
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?
A manufacturer knows that their items have a normally distributed length, with a mean of 17.3 inches, and standard deviation of 4.6 inches. If 22 items are chosen at random, what is the probability that their mean length is less than 17.8 inches?
A manufacturer knows that their items have a normally distributed length, with a mean of 7.9 inches, and standard deviation of 1.4 inches. If 7 items are chosen at random, what is the probability that their mean length is less than 7.7 inches?