The lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days and a standard deviation of 13 days.What percentage of pregnancies last fewer than 246 days?P(X < 246 days) =  %Enter your answer as a percent accurate to 1 decimal place (do not enter the "%" sign). Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. Question Help:  Forum Post to forum

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: Let, random variable X be the blood pressure (BP) of adults in the USA X follows Normal distribution…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: Denote the random variable X as systolic blood pressure. Here X follows normal distribution with µ=…

Q: The ages of people at a concert are normally distributed with a mean of 24 years in a standard…

A: Given the ages of people at a concert are normally distributed with a mean of 24 years in a standard…

Q: The distribution of heights of U.S. female college students is approximately normal with a mean of…

A: The population mean is 63.5, and standard deviation is 2.8. The Z-score is -1.5. The Lisa’s height…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

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Q: Around what percentage of adults in the USA have stage 2 high blood pressure? b. If you sampled…

A: Consider a random variable X which represents the systolic blood pressure of adults in the USA.…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

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Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean…

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Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: (a) Obtain the percentage of adults in the USA have stage 2 high blood pressure. The percentage of…

Q: For what lengths will a bolt be​ destroyed?

A: here given, mean = 7cm standard deviation = 0.10 cm

Q: The final exam scores in a statistics class were normally distributed with a mean of 63 and a…

A: Normal distribution is a distribution with bell shaped curve. This distribution is symmetric about…

Q: Anna Garcia, the manager of EG Manufacturing Company believes that the average daily wages of the…

A: Given  mu=300, Xbar=285,n=22, s=35 Level of significance=0.01

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A:

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: Also stated that Someone qualifies as having Stage 2 high blood pressure if their systolic blood…

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Mean = μ = 865σ = 155x = 876

Q: The length of pregnancies in a small rural Village are normally distributed with a mean of 260 days…

A: A. According to Empirical rule, at least 68% of the data points lie within 1 standard deviation away…

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Given data,μ=866σ=159P(X&lt;862)=?

Q: Heights of women are normally distributed with a mean of 64.4 inches and a standard deviation of 2.9…

A: Sampling distribution of the sample is a normal distribution, because the population is normally…

Q: Amanufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are…

A: From the provided information, Mean length (µ) = 10 cm Standard deviation (σ) = 0.10 cm

Q: The average typing speed of a good typist is said to be 60 words per minute. In a certain company,…

A: The following information has been provided: Average typing speed of a good typist (μ) = 6060…

Q: To qualify for a police academy, candidates must score in the top 10% on a general abilities test.…

A: Given that  X~N(μ= 200 , σ= 20 ) μ= 200 , σ= 20 Formula for Z-score Z=(X-μ)/σ

Q: The cholesterol levels of a group of young women at a university are normally distributed with a…

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Q: Prestigious University desires to accept only the top20% of all graduating seniors based on the…

A: Given: μ=500σ=100 The z- value is obtained as below:…

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Given, Let X be the length of steel rods

Q: he systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: The provided information are: Population mean μ=120 Population standard deviation (σ) = 18 Consider…

Q: The mean for the population is 206 with a standard deviation of 20. Given a z score of -0.20,…

A: The mean is 206 and the standard deviation is 20.

Q: he heights of adult men in America are normally distributed, with a mean of 69.8 inches and a…

A: Solution: Let X be the height of adult men in America and Y be the height of adult women in America.…

Q: The heights of 1000 students are normally distributed with a mean of 174.5 centimeters and a…

A: From the provided information, Population size (N) = 1000 Mean (µ) = 174.5 cm Standard deviation (σ)…

Q: A mark of at least 50 is required to pass a course. The marks this year run from a low of 45 to a…

A: Solution:   Required marks to pass = 50. Marks this year goes from 45 to 83. Let X1, X2, X3,...Xn be…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: We have given that.   X~N( μ , ?^2 )   μ =121 , ? =18   Z-score =( x - μ )/?

Q: The mean length of a human pregnancy is 268 days with a standard deviation of 9 days. Assume the…

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Q: To qualify for a medical study, an applicant must have a systolic blood pressure in the 50% of the…

A: Given data ,μ=120σ=3z-value at 50% confidence isz∝12=0.674

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: If Z is a normal variate with mean=μ=0, S.D=σ=1, then Z is called a standard normal variate, and the…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: We have given that.   X~N( μ , ?^2 )   μ =118 , ? =15   Z-score =( x - μ )/?

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

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Q: The systolic blood pressure (given in millimeters) of males has an approximately normal distribution…

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Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: From the given information, Consider, X be the random variable that shows the systolic blood…

Q: A farmer grows a particular type of apple which have normally distributed weights with a mean of 150…

A: A farmer grows a particular type of apple which have normally distributed weights with a mean of 150…

Q: A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it…

A: From the past experience, it is known that standard deviation is 8000 that is σ = 8000 Sample size n…

Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean…

A:

Q: A laboratory claims that the mean sodium level, µ, of a healthy adult is 143 mEq per liter of blood.…

A: Introduction: Denote μ as the true mean sodium level of an adult.

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: a. The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the…

Q: Butt-to-knee length is approximately normally distributed with a mean of 23.1 inches and a standard…

A: Let X be the butt-to-knee length. Here, X~ N(23.1, 1.22). Then, Z=X-23.11.2~N(0,1)

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A: Given Data : Population Mean,μ = 263.0 Population Standard Deviation,σ = 12.0

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days…

A: Given: The corresponding Z score can be calculated as: The probability that the length of…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: Solution: Let X be the systolic blood pressure of adults in the USA. From the given information, X…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: Solution: Let X be the systolic blood pressure of adults in the USA. From the given information, X…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A:

Q: The wait times at a popular restaurant are approximately normally distributed. The mean wait time is…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.