The life span of a box turtle are normally distributed with a mean of 180 years and a standard deviation of 40 years.
a) What is the probability that a turtle will live for under 50 years?
b) If there are 750 of these turtles in captivity, how many will live
between 100 and 250 years?
The life span of a box turtle are normally distributed with a mean of 180 years...
The life span of a battery is normally distributed, with a mean of 2000 hours and a standard deviation of 50 hours. A) What percent of batteries have a life span that is more than 2080 hours? B) Would it be unusual for a battery to have a life span that is more than 2080 hours? [Explain your reasoning.] What percent of batteries have a life span that is more than 2080 hours? Approximately ___% of batteries have a life...
The life spans of car batteries are normally distributed, with a mean of 62 months and a standard deviation of 5 months. (a) Find the probability that the life span of a randomly selected battery is less than 42 months. (b) Find the probability that the life span of a randomly selected battery is between 44 and 56 months. (c) What is the shortest life expectancy a car battery can have and still be in the top 5% of life...
The life of Sunshine CD players is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. A CD player is guaranteed for three years. We are interested in the length of time a CD player lasts. Find the probability that a CD player will last between 2.8 and five years. Give the probability statement and the probability.
Your company manufactures hot water heaters. The life span of
your products are known to be normally distributed with a mean of
13 years and a standard of 1.5 years.... (4 questions in
total)
D Question 11 0.4 pts Your company manufactures hot water heaters. The life spans of your product are known to be normally distributed with a mean of 13 years and a standard deviation of 1.5 years. What is the probability that a randomly selected hot water...
The life of Sunshine CD players is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. A CD player is guaranteed for three years. We are interested in the length of time a CD player lasts. Find the probability that a CD player will last between 2.8 and eight years.
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...
3. The life expectancy of computer terminals is normally distributed with a mean of 5.2 years and a standard deviation of 8 months (2/3 years). Please answer the following questions. (a) What is the probability that a randomly selected terminal will last more than 6 years? (b) What percentage of terminals will last between 3.5 and 5.5 years?
The average life span of a cheetah is eleven years with a standard deviation of 3. Assume the life span of a cheetah to be normally distributed. What percentage of cheetahs live more than 10 years? Give your answer to 4 decimal places.
The number of marshmallows in a 24 oz. box of Lucky Charms Cereal is normally distributed with a mean of 100 marshmallows and a standard deviation of 15 marshmallows. A) What is the probability that a box of cereal will have no more than 110 marshmallows in it? a. 0.75 b. 0.68 c. 0.83 d. 0 B) What is the probability that a box of cereal will have between 80 to 120 marshmallows? a. 0.32 b. 0.67 c. 0.82 d....
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...