If the standard Z value of a random Ferdin drawn from a normal distribution populason with an average of 80 and a variance of 400 is 1.2, what is this ferdin value? Please select one: a. 100 b. 120 c. 114 d. 84 e. 104

Q: There are 4 treatments, so we have k4 and k-1- A total of 18 men undenvent Treatment 1 giving n, -…

A: The number of treatments k is 4.

Q: The appropriate statistical tool for predicting the value of a random variable based on the values…

A:

Q: Given a binomial variable with a mean of 30 and a variance of 21, what is p?

A: X~Binomial(n , p) Mean=30, Variance=21

Q: We would like to compare samples from two different populations A and B. The means of these two…

A: Given that, MuA= 200 MuB= 200 Var(A) = 72 Var(B) = 200 Sample size, nA = 36  nb= 100 We've to find…

Q: 3 Describe the relationship of the two random variables and its strength based on the plots shown…

A: Covariance can be used to find the direction of relationship between 2 variable. Covariance cannot…

Q: Given that the entire population of a certain set of data comprises { 2, 1,3}. Compute the true…

A: The data set is {2,1,3}.

Q: 1. The data shown below represent the number of hours of pain relief provided by 5 different brands…

A:

Q: Suppose that the weight of a particular hand weight is advertised to be 5 pounds, but it can…

A: Answer  Given  Mean = 5 Minimum value = 4.5 Maximum value =5.1 We know that: Variance = [Range/4]^2.

Q: A researcher used an analysis of variance (ANOVA) to compare four treatment conditions with a…

A: Obtain the missing values in the ANOVA table. The missing values are obtained below as follows :…

Q: Which of the following is (are) TRUE when variances are heterogeneous across treatments?…

A: Please find the explanation below.

Q: What is the expected value for the variance of 25-unit samples taken from a population with an…

A:

Q: Suppose the variance of X is 95. What is the variance of .09X?

A: The objective of this question is to find the variance of a variable that has been scaled by a…

Q: To calculate the F statistic    A. The MSE and SST is important  B. The pooled variances is…

A: Given that  MSE = Mean Sum of  Square of Error SST = Sum of Square of Treatment  dfT = Degree of…

Q: use a ti84 device to solve. A quality control expert at Glotech computers wants to test their new…

A: Given: X~Nμ, σ The value of n is 121. The value of μ= 85 The value of σ is estimated as, σ = 49 = 7…

Q: An analysis of variance produces SStotal = 80 and SSwithin = 30. For this analysis, what is…

A: From the provided information,

Q: A value of r2=.09 is considered what for the effect size test of the percentage of variance…

A: Given, r2=0.09

Q: Which of the following variability measures is inclusive of all cases? There may be more than one…

A: Sample variance and population variance are both inclusive of all cases. The reason is that variance…

Q: Which of the following levels of variability (standard deviation or variance) would most likely…

A: The platykurtic curve has shorter peak and thinner tail compared to normal distribution. The excess…

Q: Suppose the variance of X is 33. What is the variance of .23X?

A: Given,Var(X)=33 we know that Var(ax)=a2Var(X)

Q: Suppose you roll one six-sided die. Let X =the number shown on the die. Calculate o the variance of…

A: On a six sided die there are 1,2,3,4,5,6 as numbers Probability of getting each =1/6 So mean or…

Q: If C.V.=6.8 and variance is 4.36141 then mean = %3D O a. 30.7117 O b. 64.138 O c. 307.117 O d.…

A: C.V. is the coefficient of variation which is the ratio of standard deviation to the mean. The…

Q: If C.V.=11. 23 and variance is 6.7832 then mean = a. 0.231919 b. 0.60402 c. 60.4024 d. 23.1919

A: Given information- Coefficient of variation, C.V. = 11.23 Variance, σ2= 6.7832 Therefore, the…

Q: A boat capsized and sank in a lake. Based on an assumption of a mean weight of 137 lb, the boat was…

A: It is given that, The population mean is 179.1 lb. The population standard deviation is 38.3 lb. We…

Q: Consider throwing a die 20 times. Let X be the number of times th outcome is less than 3. Find the…

A: Given that  n=20  , p=2/6=1/3 , q=1-p=1-(1/3)=2/3 X=Number of times the outcomes less than 3…

Q: 1 If the variance and mean of heights of trees are (538.24) and (176.2) cm respectively. The…

A: Given data; Variance = 538.24 Mean = 176.2 To find : The coefficient of variation (CV.) is (13.17)%.…

Q: When testing the difference between two population means, the variances are pooled when elect one:…

A: The pooled variance is the average of the group variances. It combines the estimates of the…

Q: Two samples, each with n = 6scores, have a pooled variance of 18. What is the estimated standard…

A: The pooled variance is 18.

Q: In the formula for an analysis of variance, we want between-group variance to be and within group…

A:

Q: Suppose you want to know the variance of the weights of the only 6 Snakes in a particular 200. You…

A: Given: A table: Weight Difference from the mean X-μ (Difference from the mean)2 X-μ2 8.3 -0.5…

Q: A researcher takes sample temperatures in Fahrenheit of 15 days from Oklahoma City and 17 days from…

A:

Q: Let A1, A2, A3, and A4 = the weight of dumbells at lifetime. Suppose they are independent normal…

A: GIVEN DATA  μ1 = 8.2μ2 = 6.6μ3 = 3.5μ4 = 8.1 σ12 = σ22 =σ32 =σ42 = 1 P(1A1 +  2A2  +  1A3. + 3A4 ≤…

Q: a) Find the values of A, B, C and D? p) Is there a difference between treatments? Use a = 0.01.

A: Test is that whether there is a difference between treatments. It is given that Level of…

Q: xplain in a sentence what a certain Cohen’s d means.   Explain in a sentence what a certa

A: solution:

Q: A business school has a goal that the average number of years of work experience of its MBA…

A: The random sample of size, The average number of years of work experience, The population variance,…

Q: (continue of 9). Find the abosolute value of the test statistic, under the assumption of equal…

A:

Q: Suppose bob flips a fair coin 100 times.Let X be the number of heads he gets.What is Variance of X?

A: For a fair coin the probability of getting head= 0.5X=number of headsn=sample size=100p=probability…

Q: Before a random sample has been drawn, which of the following is true? I. II. III. The sample…

A: The correct option is I only.

Q: The mean and variance of a set of 9 observations have magnitudes 8 and 3 respectively. If two…

A: Solution:-   To find the new variance after removing two observations, we need to calculate the new…

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.