A population consists of five numbers 0, 2, 4, 6, 8 a) List all possible samples of size 2 that can be drawn from this population without replacement (b) Find mean of each sample (c) Construct sampling distribution of X.
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- Consider the population consisting of {4,5,9}. If samples of size n = 2 are randomly selected from the population with replacement compute the mean of the sample medians Multiple choice answers 5 6 7 4 5.5Here is a random sample of 20 Target Store shoppers and the number of items purchased: 32, 11, 45, 17, 35, 8, 42, 24, 13, 46, 23, 19, 14, 15, 36, 23, 8, 32, 16, 39 Construct an ordered Stem and Leaf plot by hand using your pencil and paper. In the essay text box, type in the leaf values that are on your stem for 3 (30's).A fitness club is going to conduct a questionnaire survey from a list of 120 members. Each member is assigned with a survey number and 6 members are selected randomly for an interview, (@) Identify the above sampling method. (b) How many digits of the survey number should be used? (c) Use the Random Number Table below with the starting point row I column 4 to identify the 6 survey numbers, Column 123456 7 8 9 10 11 12 13 14 15 9. 16 17 18 | 19 20 6. Row 10 2.7 11 0119-21-7 2 9 3 8 7027 11 3 24 3 9036 43 4 7.6 4 09 7636 7. 3. 8. 6. 1. 1. 6. 9. 9. 8. 4 8. 1. 6. 6. 417 8. 7. 6. 7. 3. 3. 6. (d) To simplify the survey, the membership officer suggests using systematic sampling, beginning with the 3 number and taking every 21" number. பயmம்crs, Write down the 6 survey
- The assets (in billions of dollars) of the four wealthiest people in a particular country are 39, 28, 22, 13. Assume that samples of sizen=2 are randomly selected with replacement from this population of four values. a. After identifying the 16 different possible samples and finding the mean of each sample, construct a table representing the sampling distribution of the sample mean. In the table, values of the sample mean that are the same have been combined. Probability Probability 39 25 33.5 22 30.5 20.5 28 17.5 26 13 (Type integers or fractions.)The assets (in billions of dollars) of the four wealthiest people in a particular country are 41, 25, 19, 14. Assume that samples of size n = 2 are randomly selected with replacement from this population of four values. each sample, construct a table representing the sampling distribution of the sample mean. In the table, values of the sample mean that are the same have been combined. X 41 33 30 27.5 25 (Type integers or fractions.) Probability The mean of the population, sample means, (Round to two decimal places as needed.) b. Compare the mean of the population to the mean of the sampling distribution of the sample mean. means is The sample means 22 19.5 19 16.5 14 Probability c. Do the sample means target the value of the population mean? In general, do sample means make good estimates of population means? Why or why not? the mean of the the population mean. In general, sample make good estimates of population means because the mean is estimator.Three randomly selected households are surveyed. The numbers of people in the households are 1,2 and 12. assume that sample of size n=2 are randomly selected with replacement from the population of 1,2, and 12. nine different samples: 1,1, 1,2 1,12, 2,1 2,2 2,12 12,1 12,2 12,12 Find the variance of each of the nine samples, then summarize the sampling distribution of the variances in the format of a table representing the probability distribution of the distinct variance values.
- 00 Activity: Direction: Choose from the pool of words/mathematical formulas inside the box to complete the following paragraph on the important properties of the Sampling Distribution of the Sample Mean. Then write the corresponding words below each term to complete the sentence. Recall on the Properties of the Sampling Distribution of Sample Mean ain exam of 9. Fin nan 54 A. and (1) following properties: First, the (2) (3) j all possible sample size n are drawn from a population of size N with mean u , then the sampling distribution of the sample mean has the of the sampling distribution of the u. That is, Hy u. Second, the for st 80 is (4) to the (5)_ variance of the sampling distribution of the sample mean og? is given by: 0 (6) and of N-n The (8) for (7) of the sampling distribution of the sample mean is given by ox n N-1 aver dar N-n for finite population (sampling without replacement) where N-n loye is the finite N-1 N-1 population correction factor and (9) (sampling with…The first unit of the sample is selected at random and then each subsequent unit is picked at a fixed from the previous unit selected in the sample. What sampling technique is this?Explain the difference between a stratified sample and a cluster sample. (Select all that apply.) In a stratified sample, random samples from each strata are included In a stratified sample, every sample of size n has an equal chance of being included. In a stratified sample, the clusters to be included are selected at random and then all members of each selected cluster are included In a cluster sample, every sample of size n has an equal chance of being included. In a stratified sample, the only samples possible are those including every kth item from the random starting position In a cluster sample, the only samples possible are those including every kth item from the random starting position In a cluster sample, the clusters to be included are selected at random and then all members of each selected cluster are included. In a cluster sample, random les from each strata are included.
- The assets (in billions of dollars) of the four wealthiest people in a particular country are 46, 33, 21, 12. Assume that samples of size n = 2 are randomly selected with replacement from this population of four values. a. After identifying the 16 different possible samples and finding the mean of each sample, construct a table representing the sampling distributi- of the sample mean. In the table, values of the sample mean that are the same have been combined. Probability Probability x 46 39.5 33.5 33 29 (Type integers or fractions.) CITR X 27 22.5 21 16.5 12bakery sells 11 types of sandwiches. Here are their calorie amounts. 593, 594, 594, 595, 597, 600, 601, 602, 603, 606, 607 mplete the parts below to identify any outliers. (a) Let Q₁ be the lower quartile and Q3 be the upper quartile of the data set. Find Q₁ and 23 for the data set 2₁ = 0 23 = 0 (b) Find the interquartile range (IQR) of the data set. IQR = 0 Lower boundary: Upper boundary: Outliers: Explanation X Check X 0,0,... (c) Calculate a lower boundary using Q₁-1.5-IQR. Calculate an upper boundary using Q3 +1.5-IQR. (Note th 1.5-IQR means 1.5 times the IQR.) 5 X 3 None 3 (d) Any values less than the lower boundary or greater than the upper boundary are considered outliers. Iden the outliers of the data set. If there is more than one outlier, separate them with commas. If there are no outliers, click "None". U 5 C Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility F E Epoint) Four buses carrying 157 high school students arrive to Montreal. The buses carry, respectively, 33, 50, 25, and 49 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y: E(X) = Var(X) = E(Y) = Var(Y) =
