12. The red blood cell count for a population of adult males can be approximated by a normal distribution with a mean of 5.4 million cells per microliter and a variance of 0.16. What is the minimum red blood cell count, in million cells per microliter, that can be in the top 20% of counts?

Q: If a population has a mean of 228.8 and a standard deviation of 35.5 then a sampling distribution…

A: Given that, mean is 228.8 and standard deviation is 35.5. We will use z-standard normal…

Q: 6. Suppose that two populations have equal population variances but are of different 10,000,000.…

A: Given that two populations have equal population variances but different have different sizes N1 =…

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

A: Given information Mean = 116 Standard deviation = 14  between 102 and 130

Q: If an analysis of variance produces a value of F = 1.00, then all the samples have the same mean.…

A: We know that- The value of F is the ratio of two mean squares. When the value of F = 1, then there…

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A: Given X is normal Distributed with mean µ = 116.0 and standard deviation σ = 14.0 now will using…

Q: 2. If the mean of a standardized test with a normal distribution is 54.3 and the standard deviation…

A: Mean, μ = 54.3 Standard deviation, σ = 4.6

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: Given dataMean = 116Standard deviation = 14Probability that population would be between 88 and 102…

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A: We have, Mean μ=116 Standard deviation σ=14 X~N116,14 Now,…

Q: 1. Below are samples of rainfall collection for five days in Padang Gurun (in milliliters): 10 i.…

A: Calculate Mean, Median, Sample Variance (S^2), Sample Standard deviation (S) from the following…

Q: If a population has a mean of 15 and standard deviation of 3, what is expected of the sample mean…

A:

Q: Suppose that the distribution of income in a certain tax bracket is approximately normal with a mean…

A: Probability distribution: A probability distribution function is the statistical function that…

Q: 4. The Fresha Tea Company pack tea in bags marked as 250 g. A large number of packs of tea were…

A: Let X denotes the weight of tea in a pack. We are given    μx=255  &  σx= 2.5 A pack will be…

Q: If a random sample of size 36 is obtained from a population with mean u=50 , and standard deviation…

A: Given,   Mean = 50 Standard deviation = 24 Sample size = 36

Q: If grades on a certain test are approximately normally distributed with a mean of 75 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 and…

Q: Suppose The total daily carbohydrate intake and for all boys age 13 and 15 years old in the US is…

A: Let x be the daily carbohydrate intake for all boys age 13 and 15 years old in the US which follows…

Q: 2. Assume that, among residents of a large (over 6,000) Florida subdivision, the population mean age…

A: From the given information, The mean age is 65 and standard deviation is 2 years.

Q: 2. A study at the University of Colorado at Boulder shows that running increases the percent resting…

A:

Q: Suppose that a random variable X is normally distributed with a mean of 200 and a variance of 625.…

A: We have given that the random variable X is normally distributed with mean 200 and variance 625.…

Q: Suppose a population is known to be normally distributed with a mean, equal to 116 and a standard…

A: The percentage of the population would be between 116 and 144 is obtained below:It is given that the…

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 144 and a standard…

A: It is given that the population of a random variable follows normal distribution with mean 144 and…

Q: You have a sample of 16 values from a normal distribution with mean 25 and variance 64, then the…

A: Given, n = 16 μ = 25σ2 = 64

Q: The following are the weight (kg) of 20 senior high school students: 1. What is the mean, variance,…

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

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A: Let X denote the distribution of population. Given that X ~ N(mean = 116, SD = 14) Then Z = (X -…

Q: 7. The height of rugby players is normally distributed with a mean of 1.86 m and a standard…

A: Given: Population mean μ=1.86 Population standard deviation σ=0.08 Middle 80% so, α=1-0.80=0.20

Q: 2. A normal distribution of scores has a mean of 120 and a standard deviation of 20.What score…

A:

Q: 1. The length of human pregnancies from conception to birth varies according to a distribution that…

A: Step-by-step procedure to draw the normal curve using MINITAB. Step 1: Choose Graph > Probability…

Q: 2) The height of women in the United States fits a normal distribution with a mean height of 64.5…

A: using:- The table below shows Z values for commonly used percentiles.   Percentile Z 1st…

Q: 2. A normally distributed population has mean 57,800 and standard deviation 750. Find the mean and…

A: To find the mean and standard deviation of the sample means for samples of size 100:

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

A:

Q: 14) The weight of rugby players at ABC high school are normally distributed with a mean of 80.24 kg…

A: given data  μ=80.24σ=5.26P(85.25<X<90.57)=?

Q: Assuming that the height of male students in a large university is normally distributed with mean…

A: Mean is given to be μ=172.7 and standard deviation is σ=57.76=7.6 The sample mean μx=μ=172.7…

Q: Suppose that a population consists of the values 11, 15, and 20. 1) What is the population mean,…

A: Given: Population consists of the value = 11, 15, and 20

Q: 5. The quality control manager at a light bulb factory needs to estimate the mean life of a large…

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

Q: 7. A set of data has a variance of 81. What is the standard deviation?

A:

Q: 8. A random sample of size 16 is to be taken from a normal population having mean 100 and variance…

A: Obtain 90th percentile of the distribution of the sample mean. The 90th percentile of the…

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A: Answer - A Normal distribution with a mean μ = 116  and a standard deviation σ = 14…

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: If a normal distribution has a mean of 15.15 and standard deviation of 3.33, then what proportion of…

A:

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

A: From the provided information,

Q: If a distribution is normal with μ = 60 and σ = 15, what proportion of the scores fall between 60…

A: If X~N(μ,σ2), then Z=X-μσ is called the standard normal variate. The mean and variance of a standard…

Q: Suppose you have the population 50 and 80 and that their corresponding z-scores are -1 and -2,…

A:

Q: Suppose you could take all samples of size 77 from a population with a mean of 12 and a standard…

A: Given data, Mean μ=12 sd      σ=3.2 n=77 standard deviation of the sample means σx=?

Q: 2) The time it take Claudia to drive to work is normally distributed with a mean of 46 minutes and a…

A: The time it take Claudia to drive to work is normally distributed with a mean 46 and standard…

Q: Suppose we are told the sampling distribution developed from a sample of size 900 has a mean of…

A: Consider the variable of interest is X.

Q: 1. Below are samples of rainfall collection for five days in Padang Gurun (in milliliters): 10 5 8 4…

A: Asper our guidelines we are suppose to do only one question1)Given data is10,5,8,6,4

Q: 1.3. Find the estimated standard error of the proportion if, in the sample of machines, 36 machines…

A: Given that a paper company has about 50 paper mills, which have a total of 600 machines. From…

Q: Suppose a population is known to be normally distributed with a mean, u, equal to 116 and a standard…

A: Given: Population is known to be normally distributed with a mean which is equal to 116 and SD equal…

Q: IF THE VARIANCE OF A POPULATION IS 0.75, THE STANDARD DEVIATION MUST BE?

A: It is an important part of statistics . It is widely used .