30. The first of two sub-groups has 10 items with mean 15 and standard deviation 3. If the whole group has 250 items. with mean 15.6 and standard deviation V13.44, find the standard deviation of the second. sub-group.

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

A:

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: 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: From sample sizes of 36 adults find the proportion of sample means having values of at least 170.

A: Here Given  Sample size=n=36  Population mean=μ=162 Population SD=σ= 58

Q: For a population with a mean of μ = 27 and a standard deviation of σ = 14, find the z-score…

A:

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

A: From the provided information, Mean (µ) = 144 Standard deviation (σ) = 27 X~N (144, 27)

Q: 4. Suppose a variable X is normally distributed with a standard deviation of 10. Given that 0.0985…

A:

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

A: Let us consider the Population is denoted by X which is known to be normally distributed with a mean…

Q: Suppose a population has a mean of 100 and a standard deviation of 15. If repeated samples of size…

A: Given: n = 25 σ=15μ=100 The standard deviation of the sample means can be calculated as: σX=σn

Q: 4. Suppose that in the past years the average price per square foot for warehouses in Subic has been…

A: One sample t-test: The one -sample t -test is used to determine whether the mean of sample differs…

Q: 2. The average daily income of 2000 workers is Php 185.00 with a standard deviation of Php 18.00.…

A:

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: What score would be necessary to obtain a grade A

A: Observe the given figure carefully. Assuming that the top interval represents the range of marks…

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 88 and 116

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, Mean (µ) = 116 Standard deviation (σ) = 14 X ~N (116, 14)

Q: 1.) The mean monthly utility bill for a sample of households in a city is $178.95 with a standard…

A: Mean utility bill, µ= $178.95Standard  deviation, σ = $13.45

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

A:

Q: Suppose that in a given semester, the MEAN of units taken by students at Delta is 17 and has a…

A:

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

A: Obtain the standard z-score for X equals 88. The standard z-score for X equals 88 is obtained below:…

Q: Note that each value of the second data set is obtained by subtracting 3 from the corresponding…

A: The mean and the standard deviation can be calculated using the excel. The formula for mean is…

Q: Nationally, social workers average 10.2 years of experience. In a random sample, 203 social workers…

A:

Q: Consider again that the company making tires for bikes is concerned about the exact width of its…

A: Given information: The lower specification limit is 22.8 mm and the upper specification is 23.2 mm.…

Q: for a population with a standard deviation of 5 and mean of 48, draw a bell shaped curve, marking…

A: Given data, Mean=48 sd=5 Draw a bell shaped curve?

Q: for a population with a standard deviation of 0.03 and mean of 3.08, draw a bell shaped curve,…

A:

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

A: Given information Mean = 144 Standard deviation = 27  between 90 and 171

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

A: Mean = 144 Standard deviation  = 27

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: Suppose that the newborn weights are normally distributed with a mean of m kg and a standard…

A: We have given that  Mean(µ) = mStandard deviations (σ) = 0.8

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

A: The provided information are:

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

A: Mean = 144 Standard deviation = 27

Q: 1. A researcher claims that women on a special diet will have an average weight of 110 pounds. A…

A:

Q: Hello! I need help with this particular question on my study guide. There is an attachment below.…

A:

Q: 4.15. If the local restaurants in a small town record an average of 92 customers a day, with a…

A:

Q: If the true mean is 9590 with the standard deviation of 0.0080 within what interval will 98% of…

A: Given that , True mean = 9590 Standard Deviation = 0.0080

Q: Suppose that the height of LIU female students has normal distribution with mean 62 inches and…

A: Given data,μ=62σ=8P(X<x)=30.15%=0.3015x=?

Q: 7. Suppose the length of newborn babies in a community is normally distributed with an average of 50…

A: We have given that  Mean=mu=50 Standard deviation=sigma=3 X~Normal(mu=50,sigma=3)

Q: Suppose the length of the newborn babies in a community is normally distributed with an average of…

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

Q: Suppose that the daily viewing time is normally distributed with a mean of is 8.35 hours and a…

A: Determine the number of hours of television viewing must a household have in order to be in the top…

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

A: From the information, the mean is 116 and a standard deviation is 14.

Q: In an test attended by 1500 people, a distribution with a grade point average of 58 and a standard…

A: Population Mean = 58 Variance = 6.8 Sample 10 = 250 people Population = 1500 people Standard normal…

Q: A distribution with u = 55 and o= 6 is being standardized so that the new mean and standard…

A: Introduction: For a random variable, X with mean μ, and standard deviation σ, the z-score is given…

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

A:

Q: Suppose the midterm exam score for 100 students at UPC had a mean of 70 and a standard deviation of…

A:

Q: Group A has 12 people and it is a random sample and they have an average heart rate of 100 and their…

A:

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

A: Consider that X is a random variable defined as the population, which is normally distributed.The…

Q: Suppose the scores of students on an exam are normally distributed with a mean of 444 and a standard…

A: We have to find limits that include 68% data.

Q: I need help for all those questions.

A: Z score Computation can be done  using standard formula as shown below.

Q: The arithmetic mean and standard deviation of a series of 20 items were calculated by á/ student as…

A: