Given that, mean (μ) = 143 lb and
standard deviation = 29 lb
a) We want to find, P(X > 157)
Therefore, required probability is 0.32
b) sample size (n) = 4
We want to find,
Therefore, required probability is 0.17
143 lb and a standard deviation given by 25 Suppose that the weights of women marathon...
5. Assume that women's weights are normally distributed with a mean given by -1431b and a standard deviation given by ơ 29 lb. If I woman is randomly selected, find the probability that her weight is less than 140 lbs. Is a continuity correction necessary? Explain. (10 points)
women have head circumferences that are normally distributed with a mean given by u-21.78 in, and a standard deviation given by ơ:06 in. Complete parts a through c below a. If a hat company produces women's hats so that they fit head circumferences between 21.3 in. and 22.3 in, what is the probability that a randomly selected woman will be able to fit into one of these hats? The probability is Round to four decimal places as needed) The weights...
A fitness company is building a 20-story high-rise. Architects building the high-rise know that women working for the company have weights that are normally distributed with a mean of 143 lb and a standard deviation of 29 lb, and men working for the company have weights that are normally distributed with a mean of 167 lb and a standard deviation or 25 lb. You need to design an elevator that will safely carry 18 people. Assuming a worst case scenario...
Assuming that men’s weights are normally distributed with a mean of 172 lb. and a population standard deviation of 29 lb. Find the probability that 36 randomly selected men have a mean weight of less than 167 lb.
Assuming that men's weights are normally distributed with a mean of 172 lb. and a population standard deviation of 29 lb, find the probability. a.) That a randomly selected man has a weight greater than 180 lb. (4 points) b.) That 36 randomly selected men have a mean weight of less than 167 lb. (4 points)
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 191 lb The new population of pilots has normally distributed weights with a mean of 148 lb and a standard deviation of 30.2 lb. a. If a pilot is randomly selected, find the probability that his weight is between 140 lb and 191 lb. The probability is approximately (Round to four decimal places as needed.) b. If 35 different...
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 191 lb. The new population of pilots has normally distributed weights with a mean of 139 lb and a standard deviation of 28.4 lb. a. If a pilot is randomly selected, find the probability that his weight is between 130 lb and 191 lb. The probability is approximately 0.5908. (Round to four decimal places as needed.) b. If 36...
(1 pt) Women's weights are normally distributed with a mean given by μ = 143 lb and a standard devation given by σ = 29 lb Find the second decile, D2,w
Weights of women in one age group are normally distributed with a standard deviation of 23 lb. A researcher wishes to estimate the mean weight of all women in this age group. Find how large a sample must be drawn in order to be 90% confident that the sample mean will not differ from the population mean by more than 2.9 lb. Group of answer choices 181 171 242 104 168