Suppose random variable X follows a normal distribution with mean 10. If 16% of observations from this distribution are negative, the coefficient of variation of X is closest to O 5 O 10 O 1 0.32 O 0.64

Q: Consider a data set with a mean raw score of 25 and a variance of 2.25.  If P( y < X < 28 ) =…

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Q: Two samples each have n = 4 scores. The first sample has a variance of s2 = 10 and the second sample…

A: The estimated standard error for the sample mean difference is given by, standard error=s12n1+s22n2…

Q: Suppose the random variable Xfollows a normal distribution with mean 8 and varlance 25. Thus the…

A: The normal distribution is a probability distribution which is symmetric about the mean. It is given…

Q: if x is distributed as normal with mean 40 and variance 9 what is P x=40 is

A: We have given  Mean(µ) = 40 Variance (σ2) = 9 Standard deviations (σ) = √Variance (σ2) = √9 Standard…

Q: Assume that the wavelengths of photosynthetically active radiations (PAR) are uniformly distributed…

A: From the provided information,Wave lengths of photosynthetically active radiations (PAR) are…

Q: Results of an analysis of variances produce SS between = 20, SS within = 30, and an F-ratio with df…

A: Given information- Sum of squares (SSbetween) = 20 Sum of squares (SSwithin) = 30 Degree of freedom…

Q: Suppose a normal distribution has a mean of 98 and a standard deviation of 6. What is P(x2 104)? A.…

A: We have given that.   X~N( μ , ?^2 )   μ=98   , ?=6   Z-score =( x - μ )/?

Q: Consider a normal population with a mean of 10 and a variance of 4. Find P(X < 6).

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Q: Response to allergen inhalation in allergic primates. In a study of 12 monkeys, the standard error…

A: From the provided information, Sample size (n) = 12 Standard error (SE) = 0.4

Q: Suppose a random variable x is best described by a normal distribution with = 60 and o=4. Find the…

A: The mean is 60 and the standard deviation is 4.

Q: Suppose that X has a normal distribution with the data value 44.2? If necessary, round to three…

A: Mean()=43Standard deviation()=and data value(X)=44.2

Q: Suppose samples of size 100 are drawn randomly from a normal population that has a mean of 20 and a…

A: It  is given that, a normal population that has a mean of 20 and a standard deviation of 5  i.e.…

Q: Suppose that a random sample of size 20 is taken from a normal distribution with unknown mean and…

A: Given Information: Sample size n=20 Variance σ2=1 Sample mean x¯=10 Posterior mean μpost=15…

Q: A random variable Y has a normal distribution with mean µ and variance o. Given that 10% of the…

A: Given that Y~Nμ,σ2 Given that 10% of the values of Y exceed 17.24 That is,…

Q: Suppose that the distribution of diastolic blood pressure in men aged 35-44 years follows a normal…

A: For the distribution of the diastolic blood pressure, the parameters are given as follows:The mean,…

Q: A score that is 9 points above the mean corresponds to a z-score of z = 1.50. What is the population…

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Q: A population of scores has u=55 and o=15.  if 5 points are subtracted from every score in the…

A: The given data is μ = 55σ = 15 Suppose x1, x2, x3, x4, ..., xn are the data points…

Q: What is the ∑X for this sample

A: A sample of size is denoted by n. mean is nothing but the average of given sample observations. Here…

Q: Suppose you are taking samples from a normal distribution with mean 7 and variance 9. If you observe…

A: Given a normal distribution with mean 7 and variance 9

Q: A random sample of size 16 is to be taken from a normal population having mean 100 and variance 4.…

A: Sample size = 16 Mean = 100 Variance = 4

Q: Suppose X, the grade on a midterm exam, is normally distributed with mean 80 and standard deviation…

A: Given information- Population mean, μ = 80 Population standard deviation, σ = 10 Suppose X is the…

Q: Suppose that the random variable X represents the length of a punched part in centimeters. Let Y be…

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Q: 1. Find the z-score of x = 21 (Round your answer to 2 decimal places). Such a z-score is z | 2. Find…

A: Given that mean=μ=25 and standard deviation=σ=3.1Given x=21So the z score is:z=x-μσz=21-253.1z=−1.29

Q: Suppose it is believed that the probability a patient will die from a certain disease following…

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Q: Suppose that the distribution of Writing SAT scores from your state this year is normally…

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: sample of 100 scores has a mean of 58, a variance of 160, and an estimated standard error of 4.…

A: We have given that  Sample size n= 100 , mean= 58 , variance = 160 , standard error = 4 ?= 12.6491

Q: A z-score that is 9 points above the mean corresponds to a z = 1.50. What is the populations'…

A: Z score is the distance of data point from its mean in terms of its standard deviation. It is…

Q: Suppose n =42 and p =0.34 Can we approximate p by a normal distribution? Np=        Nq=

A: Given data, n=42 p=0.34

Q: Q5. A random sample of size n = 10 from a normal population has mean = 5.68 and a standard deviation…

A: Here, α=0.05, n=10, and s=0.29.

Q: 2. For a Normal Distribution where u = 3 and o = 3, where does approximately 95% of the scores fall…

A: Empirical rule :  According to empirical rule ,  1)68% of data falls within the first standard…

Q: How can a value for z be determined if it is not found in normal distribution table. For example, if…

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