About % of the area under the curve of the standard normal distribution (μ=0μ=0 and σ=1σ=1) is outside the interval Z = (-0.87,0.87) (or beyond 0.87 standard deviations of the mean). Submit QuestionQuestion 19

Q: The 87th percentile is (Round to two decimal places as needed.)

A: It is given that  Mean, μ = 50 Standard deviation, σ = 7

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Given information- We have given that the readings at freezing on a batch of thermometers are…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. P(-b <…

A: Given information- We have given the z-scores are normally distributed with a mean of 0 and a…

Q: Obtain the area between 25 and 39 under a normal curve with a mean of 55 and a variance of 36.

A: The normal probability is a type of continuous probability distribution that can take random values…

Q: In a sample of 250 student GPAs, the mean is 3.25 with a standard deviation of 0.22. Use the…

A: From the given information, there are 250 student GPAs with the sample mean 3.25 and the standard…

Q: What proportion of the population would be expected to have a petal length (a) greater than 4.5 cm?…

A: Let , X→N(μ=3.5 , σ=0.5) Our aim is to find the following :  a) The proportion would be expected to…

Q: The mean and standard deviation of the sample mean is given by Mean= Hx = µ = 2560 Standard…

A:

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: The value of c is obtained below: From the given information, P(Z&gt;c) = 0.1555      P(Z &gt; c) =…

Q: X is a random variable of student score approximately normal with mean μ = 60 and a standard…

A:

Q: Let x= red blood cell (RBC) count in millions per cubic millimeter of whole blood.  For healthy…

A:

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A: Given, Mean (µ) = 36 rupees Standard deviation (σ) = 10 rupees X~N (36, 10)

Q: Assume that a randomly selected subject is given a bone density test. those test scores are normally…

A: Let X be the random variable from standard normal distribution with mean (μ) = 0 standard deviation…

Q: Suppose that the heart beat per minute (bpm) of adult males has a normal distribution with a mean of…

A: Approach to solving the question:Rational Detailed explanation:Step-by-step Solution:1. Find the…

Q: Using the accompanying table of data, blood platelet counts of women have a bell-shaped distribution…

A: Sample mean, x¯=255.3 Sample standard deviation, s=65.5

Q: The contents of 3737 cans of Coke have a mean of x¯¯¯=12.15x¯=12.15. Assume the contents of cans of…

A: Given,   Sample size = 37 Sample mean = 12.15 Population standard deviation = 0.13   The objective…

Q: A sample of 14 forest deer mice have an average body length of x = 91.1 mm. Do forest deer mice on…

A: Given information: x¯=91.1 mmσ=8 mmμ=86 mmn=14

Q: What is the Discrete Variable Standard Deviation for the following numbers: x = 0 and P(X = x) =…

A: Answer:- Given the discrete variable is, x = 0 and P(X = x) = 0.56x = 1 and P(X = x) = 0.15x = 2 and…

Q: . How many students would be expected to have a mark between C and A (60 & 90)?

A: The mean and standard deviation for the exam results from a class of 135 students were calculated,…

Q: Suppose that a variable x is normally distributed in a population and that the standard error of the…

A: Suppose the variable of interest is x.

Q: Suppose X has a normal distribution with a mean of 800 and a standard deviation of 50. Find the…

A: Solution: From the given information, X follows normal distribution with a mean µ=800 and a standard…

Q: The test scores of communication engineering class with 900 students are distributed normally as in…

A: If a random variable, X~N(μ,σ2), the z-score is Z=X-μσ; Z~N(0,1)whereμ=population meanσ=population…

Q: Find z such that 64% of the standard normal curve lles between and (Round your answer to two decimal…

A: It is given that the area under the standard normal curve is 64%.

Q: Assume that Z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(…

A: Given is a standard normal distribution where the cumulative distribution for all z between -b and b…

Q: The capacitances of certain electronic components have a normal distribution with a mean u = 175 ar…

A: Given : The capacitances of certain electronic components have a normal dist. with  Mean (μ) = 175…

Q: The mean score on a driving exam for a group of drivers education students is 68 points with a…

A:

Q: A population of values has a normal distribution with μ=148.2μ=148.2 and σ=37.1σ=37.1. You intend to…

A: Given that n=118 μ=148.2σ=37.1

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed ha mean of…

A: Given information- It is given that the readings at freezing on a batch of thermometers are normally…

Q: Suppose that the TSH (Thyroid Stimulating Hormone) levels among healthy individuals are normally…

A: Answer:- Given, Mean, µ = 3.1 unitsmL, Exactly 95% of healthy individuals have TSH levels below 5.9…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(z…

A: GivenMean(μ)=0standard deviation(σ)=1

Q: Suppose that the heart beat per minute (bpm) of adult males has a normal distribution with a mean of…

A: Answer:- Let, X be a random variable represents the heart beat per minute (bpm) of adult males.…

Q: H0:μ=16 H1:μ<16 Your sample consists of 42 subjects, with a mean of 14.6 and standard deviation of…

A: It is given that:

Q: In a test of Ho: µ = 30 against Ha: µ> 30, the sample data yielded the test statistic z = 1.85. Find…

A: Given : Population mean = 30 z - value = 1.85

Q: The mean and standard deviation for the exam results from a class of 135 students were calculated,…

A: Given,The mean and standard deviation for the exam results from a class of 135 students were…

Q: Suppose that the heart beat per minute (bpm) of adult males has a normal distribution with a mean of…

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(-…

A: The question is about std. normal distribution Given : z ~N ( 0, 1 ) P ( -b &lt; z &lt; b ) = 0.9008…

Q: Suppose that the TSH (Thyroid Stimulating exactly 95% of healthy individuals have TS your…

A: Mean=3.1 X=6.1 95%