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in a battleground state 60 percent of all voters are republican. assuming there are only 2 parties, democrat and republican, if
1 answer
asked by
yvette
419 views
Suppose that 33 out of 300 selected american drivers read the newspaper while driving. what percent of sample proportions are
1 answer
asked by
jessica
314 views
A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If
1 answer
asked by
Alia
953 views
A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If
1 answer
asked by
Alia
985 views
6. For Design 3, consider the probability of a random individual in South Dorchester being sampled; and the probability of a
2 answers
asked by
jasonsie
499 views
Thirty five percent of adult americans are regular voters. A random sample of 250 adults in a medium size college town were
2 answers
asked by
Tessa
910 views
a recent study indicated that 29% of the 100 women over age 55 in the study were widows. a. How large a sample must you take to
1 answer
asked by
Tessa
915 views
A beverage comopany uses a machine to automatically fill 1-liter bottles. Assume that the population of volumes is normally
3 answers
asked by
Erica
531 views
The mean height of fully grown birch trees are 18 feet with a standard deviation of 1.2 feet, normally distributed. Random
2 answers
asked by
D
515 views
You are a travel agent and wish to estimate, with 95% confidence, the proportion of vacationers who plan to travel outside the
2 answers
asked by
Anonymous
934 views
A population has mean 53 and standard deviation 12. Calculate the mean of x bar for a random sample of size 10.
1 answer
asked by
Anonymous
485 views
in a random sample of 400 voter, 120 plan to vote for candidate A. determine a 95% confidence interval
2 answers
asked by
John
502 views
The average length of an adult blue whate is 30 meters with a standard deviation of 5.7 meters. If a sample of 31 whales is
2 answers
asked by
melinda
1,144 views
consider the population of all students at your school. A certain portion support mandatory national service following high
1 answer
asked by
Anonymous
1,220 views
A sample of n-25 students is selected from a population with mu =100 with standard deviation of 20. On average, how much error
2 answers
asked by
Anonymous
1,198 views
Arandomly selected sample of a population for study is one in which:
1 answer
asked by
Sandra
267 views
you sample 100 women and the average mean is 16, Calculate 95% Confidence interval for the sample. Do you have evidence the true
3 answers
asked by
najuma
343 views
A researcher wishes to be 95% confident that her estimate of the population proportion of individuals who travel overseas is
3 answers
asked by
cm
1,879 views
The manager of Alco wants to establish the proportion of time that the stock clerks spend making price changes on previously
1 answer
asked by
Anonymous
395 views
suppose we wish to construct a confidence interval for a population proportion p. if we sample without replacement from a
2 answers
asked by
carl
601 views
If 55% of a television viewing population watched a program called ¡§Name that
Poem¡¨ one evening, what is the probability
1 answer
asked by
Nancy
1,148 views
Suppose that a random sample of n kernels of popcorn is taken and x of these kernels pop. The buyer wants to be 95% sure that
1 answer
asked by
Apryl
501 views
In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Further more, there
3 answers
asked by
Jane
1,408 views
Historically, the proportion of adults over the age of 24 who smoke has been estimated to be .30. You want to take a sample to
1 answer
asked by
Tammy
465 views
A scientist samples a deer population and finds 200 deer in an area of 10 square miles. On average, how many deer can the
3 answers
asked anonymously
61 views
11. What are the implications of using a sample that is too big or a sample that is too small?
How big is big enough?
1 answer
asked by
Lindsey
284 views
With a population of 10,000 children (50% boys and 50% girls, 70% white and 30% nonwhite, and 57% single-parent family and 43%
4 answers
asked by
Lindsey
609 views
Do you or don't you want too few surveys because you won't have enough answers to support any generalizations or findings you
1 answer
asked by
Jazmyne
470 views
Tonya wants to estimate what proportion of the students in her dormitory like the dorm food. She interviews an SRS of 50 of the
3 answers
asked by
Manda
1,429 views
In order to qualify for federal job training funds, a neighborhood group must provide an estimate of the mean of education level
2 answers
asked by
MK
552 views
Determine the standard error of the mean if a random sample of 52 is pulled from a population with µ = 82 and ó = 18. Round
1 answer
asked by
Anonymous
297 views
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were
2 answers
asked by
Carmella
1,049 views
STATISTICS PLEASE HELP!!!!! I am sorry this is jy second time posting, but I really need help. I have tried contacting my
2 answers
asked by
Jake
567 views
Suppose cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 pm. A random
1 answer
asked by
Emma
740 views
A personal trainer wants a random sample of her clients. She gets the list of all her clients from the gym manager and assigns
4 answers
asked by
Jill
402 views
How many simple random samples, SRS's, are possible of size 40 from a population of size 5000?
(express in scientific notation 4
1 answer
asked by
Sue
376 views
For a given month, a random sample of 30 sales girls from a superstore has a sample mean of salary of RM 800 with standard
4 answers
asked by
niki
525 views
A _____ is a smaller piece of the population that represents the entire population.
(1 point) Responses bias bias interval
3 answers
asked anonymously
74 views
What if the size for each sample were increased to 20? Would a sample mean of 115 or more be considered unusual?
1 answer
asked by
Nicole
369 views
A population of 200 voters contains 52 Republicans, 128 Democrats, and 20 independents and members of other parties. A simple
1 answer
asked by
Sarah
436 views
The sampling distribution of x bar must be a normal distribution with a mean 0 and standard deviation 1. true or false
2 answers
asked by
CS
927 views
The standard deviation of all possible sample proportions increases as the sample size increases - TRUE OR FALSE
2 answers
asked by
CS
633 views
A manufacturer of liquid crystal displays (LCDs) is studying their production lines. The probability of sampling a defective LCD
3 answers
asked anonymously
51 views
Angela is conducting a poll on campus to determine the next student representative. How many students does she need to sample
1 answer
asked by
Ana
410 views
Why do most of the sample means differ somewhat from the population mean? What is this difference called?
3 answers
asked by
Jennifer
906 views
A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. How large a sample is needed in order to
1 answer
asked by
gg
653 views
A sample of 12 observations is selected from a normal population for which the population standard deviation is known to be 4.
1 answer
asked by
liam
735 views
I need some help on this question it has two parts but i can't figure it out. Can someone help me.
The NDSU library checks out an
1 answer
asked by
John
437 views
Suppose that the proportion of students who used the Internet as their major resource for school in the past was 66%. A sample
1 answer
asked by
Adam
855 views
Run the simulation using n = 30 and N = 10 for a uniform, a bell-shaped, and a skewed distribution.
Identify the mean of the
1 answer
asked by
Karen
483 views
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