An adult can lose or gain two pounds of water in the course of a day....
An adult can lose or gain two pounds of water in the course of a day. Assume that the changes in water weight are uniformly distributed between minus two and plus two pounds in a day. What is the standard deviation of a person's weight over a day?
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An adult can lose or gain two pounds of water in the course of a
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A random sample of 45 adult elephants had the sample mean weight of 12,240 pounds and...
A random sample of 45 adult elephants had the sample mean weight of 12,240 pounds and the sample standard deviation of 450 pounds. A random sample of 80 adult hippos had the sample mean weight of 5,700 pounds and the sample standard deviation of 400 pounds. Assume that the two populations are approximately normally distributed. A zoologist claims that the difference between the overall weights of adult elephants and adult hippos is 6,300 pounds, however others believe the difference must...
Kelly wants to lose 55 pounds over the course of a year (365 days). How many...
Kelly wants to lose 55 pounds over the course of a year (365 days). How many calories does she need to eliminate each day to meet this goal? Group of answer choices 527 (rounded) 328 (rounded) 489 (rounded) 652 (rounded) Flag this Question Question 7 3 pts Sam eats an extra 650 kcals each day for 180 days. How many pounds can he expect to gain during this time? Group of answer choices 33.4 67 105.6 210.2 Flag this Question...
The weight gain for college freshman is normally distributed with an average of 7 pounds and...
The weight gain for college freshman is normally distributed with an average of 7 pounds and a standard deviation of 1.2 pounds. If a college freshman is randomly selected, what is the probability that the student's weight gain is more than 10 pounds? ROUND to the nearest THOUSANDTHS place.
(1 point) According to a simple physiological model, an athletic adult male needs 20 calories per day per pound of body...
(1 point) According to a simple physiological model, an athletic adult male needs 20 calories per day per pound of body weight to maintain his weight. If he consumes more or fewer calories than those required to maintain his weight, his weight changes at a rate proportional to the difference between the number of calories consumed and the number needed to maintain his current weight; the constant of proportionality is 1/3500 pounds per calorie. Suppose that a particular person has...
People who go on a (leisure) vacation tend to gain weight. It is thought that the...
People who go on a (leisure) vacation tend to gain weight. It is thought that the average difference between weight before the vacation and after the vacation is roughly 2 pounds with a standard deviation of 2.5 pounds. Ten vacationing people are to be randomly selected and their weights measured, both upon departure and return of their vacation. If we can assume that the differences are normally distributed, what is the probability that the ten vacationing people gain an average...
Dog weights. Adult German shepherd weights are normally distributed with mean of 73 pounds and standard...
Dog weights. Adult German shepherd weights are normally distributed with mean of 73 pounds and standard deviation of 10 pounds. (a) The bottom 21% of weights are below what weight? (b) 79% of weights are above what weight? (c) The top 21% of weights are above what weight? (Round answers to one decimal place)
Sylvia wants to lose 40 pounds. How many kcalories does this represent? Group of answer choices 105,000 85,000 140,000 3...
Sylvia wants to lose 40 pounds. How many kcalories does this represent? Group of answer choices 105,000 85,000 140,000 3500 Flag this Question Question 2 1 pts If Paul eats 350 kcals less every day, how many kcalories does he not consume each week? Group of answer choices 2450 4000 3500 2280 Flag this Question Question 3 day? Group of answer choices 3.5 pounds 1.4 pounds 2.8 pounds 4.2 pounds Move To... This element is a more accessible alternative to...
Suppose that the weight students gain in their first year of college is Normally distributed with...
Suppose that the weight students gain in their first year of college is Normally distributed with a mean of 10 pounds and a standard deviation of 2 pounds. (a) What is the probability that a randomly selected student will gain between 6 and 8 pounds? (b) Suppose we pick 5 students at random. What is the probability at least one will gain between 6 and 8 pounds? (c) If 30 students are randomly selected, what is the probability that the...
An elevator has a placard stating that the maximum capacity is 1610 lb — 10 passengers. So, 10 adult male passengers can have a mean weight of up to 1610/10=161 pounds. If the elevator is loaded with 10 adult male passengers, find the probability that i
An elevator has a placard stating that the maximum capacity is1610 lb—10 passengers. So,10 adult male passengers can have a mean weight of up to1610/10=161 pounds. If the elevator is loaded with10 adult male passengers, find the probability that it is overloaded because they have a mean weight greater than161 lb. (Assume that weights of males are normally distributed with a mean of170 lb and a standard deviation of32 lb.) Does this elevator appear to be safe?A) The probability the...
Ayrshire cows produce an average of 57 pounds of milk per day with a standard deviation...
Ayrshire cows produce an average of 57 pounds of milk per day with a standard deviation of 6 pounds. Assume the daily production is normally distributed. 20 cows are randomly selected from a herd and their day’s milk production is weighed. Let ȳ be the mean pounds of milk for this sample. a. Find the mean and standard deviation for the sampling distribution of ȳ. b. Use normalcdf with the sample mean ȳ to determine the probability that the mean...
The weight gain for college freshman is normally distributed with an average of 7 pounds and a standard deviation of 1.2 pounds. If a college freshman is randomly selected, what is the probability that the student's weight gain is more than 10 pounds? ROUND to the nearest THOUSANDTHS place.
(1 point) According to a simple physiological model, an athletic adult male needs 20 calories per day per pound of body weight to maintain his weight. If he consumes more or fewer calories than those required to maintain his weight, his weight changes at a rate proportional to the difference between the number of calories consumed and the number needed to maintain his current weight; the constant of proportionality is 1/3500 pounds per calorie. Suppose that a particular person has...
Dog weights. Adult German shepherd weights are normally distributed with mean of 73 pounds and standard deviation of 10 pounds. (a) The bottom 21% of weights are below what weight? (b) 79% of weights are above what weight? (c) The top 21% of weights are above what weight? (Round answers to one decimal place)
Suppose that the weight students gain in their first year of college is Normally distributed with a mean of 10 pounds and a standard deviation of 2 pounds. (a) What is the probability that a randomly selected student will gain between 6 and 8 pounds? (b) Suppose we pick 5 students at random. What is the probability at least one will gain between 6 and 8 pounds? (c) If 30 students are randomly selected, what is the probability that the...
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