A sampling error is the situation in which not all memebrrs of the population are equally likely to be selected. S
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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
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A: Given, A double sample acceptance sampling plan is implemented on very large lots(infinite). What…
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A: Given information: PCandidate A=6100=0.06
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A: Scenario: A sampled injection-molded part could have been produced in one of three presses and in…
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A: Correlation is the measure that used to determine the association between the two variable. The…
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Q: In simple random sampling, it is also true that each member of the population is equally likely to…
A: Simple random sampling: Simple random sampling is a procedure of collecting samples using the…
Q: The correlation coefficient: (round to 3 decimal places) The equation y-a+bx is: (round to 3 decimal…
A: Correlation coefficient can be computed from excel,data→data analysis→correlation r=0.3537
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A: Uniform Distribution: A continuous random variable X is said to follow Uniform distribution with…
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Q: A student wants to see if the number of times a book has been checked out of the tibrary in the past…
A: In this case the Number of times checked out (x) is the independent variable and the number of pages…
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A: Sample size=250, X=49, p=23%
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Q: A student wants to see if the number of times a book has been checked out of the library in the past…
A: As given, the" number of times checked out " will be a predictor of the " number of pages ".…
Q: r claim at a 0.10
A: number of times checked out number of pages 22 239 38 265 46 379 5 369 31 319 11 275…
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A: Null hypothesis: Alternative hypothesis:
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Q: A student wants to see if the number of times a book has been checked out of the library in the past…
A: As given, the" number of times checked out " will be a predictor of the " number of pages ".…
Q: A student wants to see if the number of times a book has been checked out of the library in the past…
A: The correlation coefficient: r=cov(x,y)σxσy=∑i=115(x-x¯)(y-y¯)/nσxσy=538.20*53.1=0.1217 The equation…
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A: The SRS gives all the participants an equal chance of being selected in the sample.
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A: If p is the population proportion, then to satisfy the conditions for normality, we need to check n…
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A: It is an important part of statistics. It is widely used.
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- A task requires the completion of four activities. A teacher would like to know if differences in the sequence of the four activities results in different task completion times. The teacher selects three students and demonstrates the activities in random order to the students. Then each student completes the task with each of the activity sequences. The completion times are recorded. The following table shows the minutes for each student to complete each task. Assume that the populations from which the sample drawn are normally distributed. (use 2 digits after decimal point) Ayşe Sema Ahmet A 21 20.1 21.4 B 17.6 18.7 21.4 C 20 20.1 22.1 D 21.3 18.8 20.5 1. Complete the following analysis of variance table. Source of Variation SS Df MS F-Ratio Between Groups (Students) G Answer Answer Answer Answer Between Blocks (Activities) B 4.83 Answer Answer Answer Error 6.74 Answer Answer…21Suppose that in a random selection of 100100 colored candies, 2323% of them are blue. The candy company claims that the percentage of blue candies is equal to 2525%. Use a 0.100.10 significance level to test that claim.
- A student wants to see if the number of times a book has been checked out of the library in the past year and the number of pages in the book are related. She guesses that the number of times a book has been checked out of the library in the past year will be a predictor of the number of pages it has. She randomly sampled 15 books from the library, test her claim at a 0.05 level of significance. number of times checked out number of pages 13 223 45 350 49 377 30 371 3 343 7 280 17 218 7 265 20 382 23 287 1 313 30 388 20 358 2 311 40 421 The correlation coefficient: r= (round to 3 decimal places) The equation y=a+bx is: (round to 3 decimal places) y=+ x The hypotheses are: H0:ρ=0H0:ρ=0 (no linear relationship)HA:ρ≠0HA:ρ≠0 (linear relationship) (claim) Since αα is 0.05 the critical value is -2.16 and 2.16 The test value is: (round to 3 decimal places) The p-value is: (round to 3 decimal places) The decision is to reject H0H0 do not reject…A student organization reports that, of a random sample of 300 college undergraduates, 95% attend all their classes during the first week of the semester and 15% did not attend all their classes during the first week. We know there is a mistake in this report because O A stratified sample would have been less prone to error O It's very unlikely that 15% of students didn't attend all their classes during the first week O There is always a possibility of response bias O 95% plus 15% adds up to more than 100%Suppose that public opinion in a large city is 72 percent in favor of allowing a large recycling plant to be constructed using taxpayer funds and 28 percent against such a build. If a random sample of 300 people from this city is interviewed, what is the approximate probability that more than 100 of these people will be against increasing taxes? Are we suppose to use binomial distribution formula or the sampling distribution of the proportion formula for this problem?
- 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.In simple random sampling, it is also true that each member of the population is equally likely to be selected, the chance for each member being equal to the sample size divided by the population size. Show that this fact is also true for stratied random sampling with proportional allocation.A video game company wants to learn whether in-game messaging can keep their player base engaged longer. They expose a random sample of their audience to messaging highlighting a new game mode, while the rest receive default messaging. The company then measures how many game sessions individuals across both groups complete afterward. 1)factorial ANOVA 2)one-way ANOVA 3)paired samples t-test 4)independent samples t-test