The mean number of milligrams of sodium in a certain brand of dinner is 540mg with...
The mean number of milligrams of sodium in a certain brand of dinner is 540mg with a standard deviation of 48mg. Assume that the distribution is normal. Find the probability that a mean of 64 dinners has 550mg or more sodium 0.0478 O 0.1658 0.9522 O 0.9834
Example The average number of milligrams (mg) of sodium in a certain brand of low-salt microwave froren dinners is 660 mg, and the standard deviation is 35 mg. Assume the variable is normally distributed. If a single dinner is selected, find the probability that the sodium content will be less than 650 mg
The average cholesterol content of a certain brand of eggs is 224 milligrams, and the standard deviation is 13 milligrams. Assume the variable is normally distributed. If a sample of 21 eggs is randomly selected, find the probability that the mean of the sample will be larger than 221 milligrams. u= milligrams milligrams ? Select an answer PC ? ? Select an answer Select an answer Round each box to two decimal places Now select your normal distribution curve with...
The nicotine content in a certain brand of king-size cigarettes has a normal distribution with a mean content of 1.8 mg and a standard deviation of 0.2 mg. Find the probability that the nicotine content of a randomly chosen cigarette of this kind is (a) more than 1.95 mg; (b) between 1.95 mg and 2.35 mg.
Let X be a random variable with a normal distribution having a mean of 30 and a known standard deviation of 16. What is the probability that X is greater than 50? A- 0.1056 B- 0.6057 C- 0.3944 D- 0.8944
Assume that the random variable X is normally distributed with mean p = 60 and standard deviation o= 8. Compute the probability P(X <70). 0.1056 0.9015 0.8849 0.8944
a certain brand of batteries has a lifetime with a normal distribution, a mean of 3750 hours, and a standard of 300 hours. what is the probability that the batteries will last between 3800 and 4100 hours. round to 4 decimal.
The weights of a certain brand of candies are normally distributed with a mean weight of 0.8595 g and a standard deviation of 0.0521 g. A sample of these candies came from a package containing 462 candies, and the package label stated that the net weight is 394.5 g. (If every package has 462 candies, the mean weight of the candies must exceed 4620.8539 g for the net contents to weigh at least 394.5 g.) a. If 1 candy is...
QUESTION 5 Mean and Standard Deviation. Assume that the random variable X is normally distributed, with mean - 70 and standard deviation 8 16. Which of the following is the probability P(X <90)? (CHOOSE ONE ANSWER) (4 points) 0.8944 0.8849 0.1056 0.9015 QUESTION 6 Human Pregnancies. The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting less than 250 days. (CHOOSE...
Question 8 The mean life of a certain brand of auto batteries is 44 months with a standard deviation of 3 months. Assume that the lives of all auto batteries of this brand have a bell-shaped distribution. Using the empirical rule, find the percentage of auto batteries of this brand that have a life of 38 to 50 months. Round your answer to one decimal place the tolerance is +/-2%