8. A random sample of size 16 is to be taken from a normal population having mean 100 and variance 4. What is the 90th percentile of the distribution of the sample mean?

Q: 2 3 4 6. 8. A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean…

A:

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: simple random sample comprised of the following data: 55, 23, 15, 6, 31. What is the point estimate…

A: Given that  Data -  55, 23, 15, 6, 31. Number of data values (n) = 5 Sum of data value = 55+…

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: d) If the variance is 120 1b, what sample size is necessary to estimate true yield point to be…

A: Given that  Variance  ?2=120 Margin of error =E =3 99% confidence.

Q: The following are the random sample weights of 6 babies at Philippine General Hospital. 5.0 Ibs 6.6…

A: given data 5, 6.6, 4.6, 5.2, 5.4, 5.6 n= 6

Q: An independent-measures study with n= 6 in each sample produces a sample mean difference of 4 points…

A: It is given that the difference in sample means, (X1-bar – X2-bar) = 4Sample size is n1 = n2 = 6.The…

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: A population consists of the four numbers 3, 4, 5, 9 with mean = 5.25 and variance = 5.1875 possible…

A: 1 3 3 3 2 3 4 3.5 3 3 5 4 4 3 9 6 5 4 3 3.5 6 4 4 4 7 4 5 4.5 8 4 9 6.5 9 5 3 4 10…

Q: 4. The following table shows the average mumber of words a random sample of five-year-old girls and…

A: Given Data : For Sample 1 x̄1 = 26.6 s1 = 7.3 n1 = 11 For Sample 2…

Q: 7. Two random samples of sizes 400 and 500 have mean 10.9 and 11.5 respectively. Can the samples be…

A:

Q: Which of the following values may be analyzed using one-way ANOVA? a. the difference between two…

A: One-way ANOVA is an extension of a t-test for independent samples. It compares the means of three or…

Q: Consider the data set 6             7            12          18          22 together with a sixth…

A: Given Data set   6, 7, 12, 18, 22, x   Mean=6+7+12+18+22+x6=65+x6∑xi2=62+72+122+182+222+x2=1037+x2

Q: What sample size should be used in a study conducted to estimate the average monthly absences of…

A:

Q: what is the mean and standard deviation of the following sample:  8, 1, 5, 1, 5

A: From the given information, X= {8, 1, 5, 1, 5}Mean and standard deviation of the sample can be…

Q: Find the variance and standard deviation of the given set of data to the nearest tenth. {530, 150,…

A: As we know that varience is of set of data V(x)=1n∑i=1nxi-μ2  and standard deviation is SD=V(x)

Q: 2. In an ANOVA, when would the F-test statistic be zero? A) When there is no difference in the…

A: The F statistic depicts the ratio of two variances which measure that how far the data are dispersed…

Q: (4). Calculate SS, variance and the standard deviation for the following sample of n-5 scores: 9, 6,…

A: Find SS, variance and. Stranded divination

Q: .1 The operations manager of a motor vehicle accessories firm with branches in Limpopo and Durban…

A: Solution: Given information: n1= 31  Sample size of Limpopo branch n2= 35   Sample size of Durban…

Q: An independent-measures study with n = 5 in each sample produces a sample mean difference of 4…

A: We have to find test statistics.

Q: 2. Given the mean age of 15 children in the table below is 3.4, determine the sample variance and…

A: The mean age of 15 children are given , we have to find the sample variance and the standard…

Q: 3. When 25 samples are drawn with replacement Y 1 2 Ply) 1/2 1/6 3 1/3

A: 3)Given data is  y 1 2 3 P(y) 1/2 1/6 1/3

Q: 7. What type of statistical test should be used when the population is approximately normally…

A: When Population is normally distributed and population standard deviation is known we use the Z…

Q: Given a non-normal population with a variance of 49 and mean of 3. If the size of a sample is n =…

A: We have given that  Variance =49 , mean= 3 Sample size = 81 Then standard deviation = sqrt(…

Q: 2) A random sample of 5 table tennis balls is selected and the diameter (in mm) of each table tennis…

A:

Q: Give the mean and the standard deviation of the distribution of means for mean=100; Variance=100;…

A:

Q: (A) If the standard deviation of Set 1 is larger than Set 2, the variance of Set 1 is also larger…

A: Here, we need to identify which of the given statement(s) is/are true.

Q: What sample size should be used in a study conducted to estimate the average monthly absences of…

A:

Q: pose a population has three values (13, 17, 24)

A: Given, Let X  =13, 17, 24

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: what is the mean and standard deviation of the following sample:  18, 1, 5, 1, 5

A: Solution:The mean is obtained below:The sample mean is 6.

Q: 2(8) A sample of 7 observations taken from a population produced the following data: 10. 9, 13, 15,…

A: Let X~ N(μ,σ2) Given  population variance =10 level of significance =2.5 df =n-1 =7-1…

Q: 1. A certain prescription allergy medicine is supposed to contain an average of 245 parts per…

A: Comment: As per the our company guidelines we are supposed to answer only three subparts. Kindly…

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: 26. Given an infinite population with mean 10 and variance 100, then the sampling distribution of…

A: Based on the provided information, the following values are known. Population mean, μ=10 Population…

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: 1. Suppose a population has three values (13, 17, 24) a. What is the population mean, population…

A: Given: Population: {13,17,24}

Q: A If the computed value of variance and standard deviation is zero (0), this suggests that the data…

A: A) If the variance and standard deviation is zero 0  then there will be no variation in the data…

Q: A. Consider all samples of size 5 from this population:2, 5, 6, 8, 10, 12, 13 1. Compute the mean…

A: NOTE: As per the guidelines, we are supposed to do the first question only.   The data set is :…

Q: Consider a population with variance 41 and mean 1. What is the z-score for a the value x = 20? Round…

A: Given: Variance= 41 Mean =1 To find: z-score for the value x=20

Q: Suppose X has a normal distribution with mean 135 and variance 36. Find the 67th percentile of the…

A: The 67th percentile of the distribution of X is, PX<x=0.67PX-μσ<x-13536=0.67Pz<x-1356=0.67…

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

A:

Q: 4. Use Descriptive Statistic tool on the Data Analysis to find the following: d. Standard Deviation…

A: Data…

Q: 5. Carry out an appropriate statistical test to determine whether the data is normally distributed.

A:

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: Given the data: 22, 33, 44, 55, 23, 34, 45, 56, 20, 30, 40, 50 Test the hypothesis that the…

A:

Q: 7. A random sample of size 225 is drawn from a population with mean 100 and standard deviation of…

A: Given that the population mean=100 And standard deviation=20 n=sample size=225

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: Coefficient of Variation

A: Let us take the given sample taken from a large  Normal Distribution 8, 12, 17, 20, 24, 28, 33, 37,…

Q: Suppose that the time it takes a student to complete an assignment is normally distributed with mean…

A:

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.