The length of human pregnancies is approximately normal with mean u= 266 days and standard deviation o= 16 days. Complete parts (a) throu ..... (a) What is the probability that a randomly selected pregnancy lasts less than 261 days? The probability that a randomly selected pregnancy lasts less than 261 days is approximately (Round to four decimal places as needed.)

Q: he amount of soda dispensed by a soft drink dispenser is normally distributed with a mean of 25…

A: The provided information are: Population meanμ=25Population standard deviation σ=1.25

Q: Coal is carried from a mine in West Virginia to a power plant in New York in hopper cars on a long…

A: Obtain the Z-score for the random variable X equals 60.5. The Z-score for the random variable X…

Q: (d) Write down the name of the sampling method for the following cases: (di) A fair representative…

A: Hello thankyou for the question. As you asked only answering two parts in part d of the question.

Q: he amount of milk sold each day by a grocery store varies according to the Normal distribution with…

A: Given Data : Population Mean,μ = 130 Population Standard Deviation,σ = 10

Q: The tread life of a particular brand of tire is a random variable best described by a normal…

A: The random variable tread life of a particular brand of tire follows normal distribution. The…

Q: The amounts of time per workout an athlete uses a stair climber are normaly distributed, with a mean…

A: The mean is 23, standard deviation is 7.

Q: A company advertises that the batteries it sells is normally distributed with a mean life of 25…

A:

Q: IQ scores follow an approximately Normal distribution with a mean of 100 and standard deviation of…

A: Population mean μ =100 Population standard deviation =15

Q: abies born full-term (gestational period of 40 weeks) have a birth weight that follows a normal…

A: The problem can be solved using normal distribution formula.

Q: A certain type of light bulb has an average life of 500 hours, with a standard deviation of 100…

A: Given Mean=500 Standard deviations=100

Q: Question : suppose the average length of stay in a chronic disease hospital of certain type of…

A: ##According to Q&A guidelines I am only given the answer of first three questions for remaining…

Q: The amount of milk sold each day by a grocery store varies according to the Normal distribution with…

A: It is given that the mean is 130 and the standard deviation is 10.

Q: Coal is carried from each car are normally distributed, with mean u = 50 tons and standard deviation…

A: Obtain the probability that one car chosen at random will have a load weight less than 49.5 tons of…

Q: height in the male population is normally distributed with a mean height of 5–11 (71 in.) and a…

A: Here is given that mean is 71 inches and standard deviation is 4 inches. 6 ft is equal to 72 inches.

Q: Coal is carried from a mine in West Virginia to a power plant in New York in hopper cars on a long…

A: It is given that the weight of coal loaded into each car is normally distributed with mean 75 tons…

Q: The United States Coast Guard assumes the mean weight of passengers in commercial boats is 185…

A: We have given that Mean(µ) = 185Standard deviations (σ) = 26.7X ~ N (µ, σ )= N(185,26.7)

Q: The arrival times of a particular rush-hour commuter train are normally distributed. The mean…

A: Given,Mean arrival time: 8:47 a.m.Standard deviation: 4 minutesTime of interest: 8:51 a.m Calculate…

Q: 4. DETAILS MY NOTES ASK YOUR TEACHER The amount of time between taking a pain reliever and getting…

A: Solution a) P(X>30) O probability of at least 30 minutes is  0.0478

Q: Coal is carried from a mine in West Virginia to a power plant in New York in hopper cars on a long…

A:

Q: Replacement times for TV sets are normally distributed with a mean of 8.2 years and a standard…

A: