Suppose the distribution of heights of a group of 300 children is normal, with a mean of 150 centimeters and a standard deviation of 12 centimeters. About how many of these children are taller than 162 centimeters?

Q: In a college class, the average IQ is 115. Assume that the distribution is normal and that the…

A: In a college class, the average IQ is 115. Assume that the distribution is normal and that the…

Q: The scores on a psychology exam were normally distributed with a mean of 50 and a standard deviation…

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Q: What is the maximum blood pressure reading of the lowest 70% of adult males?

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Q: Suppose that the weights of candy bars vary according to a normal distribution, with mean of 62…

A: The question is about normal dist. Given : The mean weights of candy bars ( μ ) = 62 g The std.…

Q: Suppose the average amount of apples per tree in a large orchard is 600 pounds with a standard…

A: Given, Population mean µx=600 pounds Population standard deviation σx=70 pounds a. Assuming that the…

Q: A set of test papers is normally distributed with a standard deviation of 5. If Riley scored an 83…

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Q: Suppose you found that the average sea- faring bird can fly 8,000 km without stopping. The wandering…

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Q: If there is a small amount of variation, then the standard deviation is what

A: Standard deviation: It is defined as the positive square root of the variance. It fulfils requisites…

Q: A study discussed that the percent purity of oxygen from a certain supplier yields a mean of 99.61%…

A: Given: δ=0.08, μ=99.61 To find: Purity value exceeds exactly 5% of the population

Q: Assume that the distribution of systolic blood pressure of adult men has a mean of 110 mmHg and…

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Q: Suppose that wedding costs in the Caribbean are normally distributed with a mean of $8000 and a…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: If a distribution has a mean of 50 and a standard deviation of 5, what value would be -1 standard…

A: Given, μ=50σ=5z=-1x=?

Q: If the average number of textbooks in professors' offices is 14, the standard deviation is 5, and…

A: Given that For textbooks, mean = 14, and SD = 5 For age, mean = 42, and SD = 10

Q: Which graph shows a normal distribution of student heights with a mean of 170 cm and a standard…

A: Normal Curve :The following are the normal curve properties The normal curve is bell shaped with…

Q: If on an average 8 ships out of 10 arrive safely at a port, find the mean and standard deviation of…

A:

Q: heights of adult women in the United States are normally distributed with a mean of 65 inches and a…

A: The z score can be calculated as: z=x-μσ The required z score that is associated with the top 10% or…

Q: If the mean height of bonsai trees is 52 cm with a standard deviation of 10 cm, 95% of the trees are…

A: NOTE : As per our guidelines we have to answer the first question if multiple questions are posted…

Q: In 2019, the amount of money that motorists spent on gas had a normal distribution with a mean of…

A: Given Information Number of persons sampled (n) = 2400 Mean (µ) = 900 Standard deviation(σ) = 100…

Q: the length of a certain species of fish were found to be normally distributed. the mean length is 72…

A: Any assumption about the parameter or probability function is called a hypothesis. Given data are…

Q: Suppose the exam average in a class is 48% with a standard deviation of 15. What proportion of…

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Q: A data set with roughly a bell-shaped distribution has mean 45 and standard deviation 12.…

A: The percentage of the observations lie between 33 and 57 is obtained below:Let X be an observation…

Q: An instructor in a large lecture class found, at the end of the semester, that the total point…

A: The provided information is:

Q: Suppose the scores of students on a Statistics course are Normally distributed with a mean of 440…

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Q: Would lun ne IS! 12. Antonio's height is 1 standard deviation below the mean for boys his age. If…

A: Antonio's height is 1 standard deviation below the mean for boys his age. The heights of boys are…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 62…

A: Given: μ=62 minutesσ=18 minutes

Q: The weights of men are normally with a mean of 172 pounds and a standard deviation of 29 pounds.…

A: Let X be the random variable from normal distribution with mean (μ) = 172 and standard deviation (σ)…

Q: Suppose the exam average in a class is 72% with a standard deviation of 3. What proportion of…

A: Given data: Average score = 72 % Standard deviation  = 3% To find: What proportion of students…

Q: for a population with a standard deviation of 10 and mean of 100, draw a bell shaped curve, marking…

A: We have to draw bell shaped curved and marking location of the mean and standard deviation..

Q: Suppose the test scores in a class are normally distributed with a mean of 70 and a standard…

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

Q: Suppose a nomal distribution has a mean of 50 and a standard deviation of 3. What is Pes 47)?

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Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

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Q: A recent study found that 69% of all adults over 50 wear sunglasses for driving. In a random sample…

A: Formula : Mean = np Standard Deviation  :

Q: Suppose that the mean and standard deviation of the scores on a statistics exam are 81.7 and 6.75,…

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Q: Assume that the heights of 400 basketball players are normally distributed with a mean of 175 cm and…

A: 3.  Assume that the heights of 400 basketball players are normally distributed with a mean of 175 cm…

Q: Suppose the scores of students on an exam are normally distributed with a mean of 253 and a standard…

A: From the provided information, Mean (µ) = 253 Standard deviation (σ) = 80

Q: A group of patients has a mean height of 160 cm and a standard deviation of 10 cm. What standard…

A: Determine the standard score that would cut off the lowest 50% of scores. The standard score that…

Q: Suppose that the score on a reading test are normally distributed within a mean of 70 and a standard…

A:

Q: The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Suppose that the distance of fly balls hit to the outfield is normally distributed with a mean of…

A: Let X denote the distance of fly balls hit to the outfield is normally distributed with a mean of…

Q: The heights of male students are normally distributed with a mean of 170 cm and a standard deviation…

A: The heights of male students are normally distributed with a mean of 170 cm and a standard deviation…

Q: The distribution of heights of adult American men is approximately normal with a mean of 69 inches…

A: Let, X=the heights of adult American men Given that X follows a normal distribution with mean=69 and…

Q: A distribution is known to be bell-shaped, with a mean of 82 and a standard deviation of 6. What…

A: Obtain the Z-score for the random variable X equals 76. The Z-score for the random variable X equals…

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 70…

A: Let , X denotes  scores on a statewide standardized test .  Therefore , X - > N (mean = 70 , sd =…

Q: In a population of 100 male fruit flies, the mean abdomen length is 2.0 mm and the standard…

A: Given μ=2 and σ=0.3     Use standardization asz=x-μσ

Q: Suppose the distribution of typing speeds in words per minute for experienced typists can be…

A: Solution: Let X be the typing speed in words per minute. From the given information, X follows…

Q: A normally distributed data set has a mean of O and a standard deviation of 2. What is the percent…

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Q: for a population with a standard deviation of 4.2 and mean of 32.5, draw a bell shaped curve,…

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Q: A set of laptop prices are normally distributed with a mean of $750 and a standard deviation of $60.…

A: To Determine: A set of laptop prices are normally distributed with a mean of $750 and a standard…

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 69…

A: Let X denote the scores on a statewide standardized test and it follows normal distribution with…

Q: Suppose that the mean IQ score for University Students is 105, with a standard deviation of 7.…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

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.