945 Answered Questions for the topic Statistics Question

Statistics Question Statistics

12/10/16

Mean or a proportion ? and solve problem accordingly
1. Find the sample size needed to estimate the percentage of republicans among registered voters in California. Use a 0.03 margin of error; use a confidence level of 90%.
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Statistics Question

12/08/16

In an eight horse race, how many different combinations are possible if only the first three places are considered?
How many combinations are possible?
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Statistics Question

12/08/16

a fabric contains on average 2.2 defects per 200 yards. find the probability that a given piece of 200 yards of this fabric will contain no defects.
statistics word problem trying to find an answer of 11%
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Statistics Question

12/06/16

Is Interquartile range the same as Q1? or Q2?
What is interquartile range? Is is q1, or q2?   What is the difference between interqartile range, and just range?
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Statistics Question

12/04/16

Determine whether the random variable is discrete or continuous.
In each case, state the possible values of the random variable. (a) The number of people with blood type A in a random sample of 27 people. (b) The amount of snowfall. (c) Is the number of people... more
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Statistics Question

11/30/16

Find the number of ways 10 people can line up in a row for concert tickets.
Find the number of ways 10 people can line up in a row for concert tickets.
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Statistics Question Math Statistics Psychology

11/28/16

May you please help me?
do cafe customers stay longer with darker lighting- is this observational or observational with case control     It's either a.observational b.observational with case control c.experiment or... more
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Statistics Question Statistics Psychology Ap Statistics

11/28/16

Statistics/psych Question
The second one is: do cafe customers stay longer with dark let lighting- is this observational,observational with case control,experiment,experiment with single or double blinding
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Statistics Question Statistics Statistic Ap Statistics

11/28/16

Statistics Question!
Do adding multivitamin supplements to your daily diet help decrease the number of colds caught...is this a double blind or single blind study?
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Statistics Question Statistics Percentages

11/28/16

Can you solve a math problem?
Of the 67 students studying a foreign language at Green Hills High School, 24 are studying Spanish, 24 are studying French, and 28 are studying German. There are 6 students studying Spanish and... more
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Statistics Question

11/27/16

during a tennis tournament there were 611 challenges by players.
during a tennis tournament there were 611 challenges by players. Among those challenges 172 were upheld with the call overturned. Assume that 33% of the challenges of the challenges are... more
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Statistics Question

11/27/16

Using alpha = .05, what is your decision if the p-value is 0.04 for a one-tail test?
Using alpha = .05, what is your decision if the p-value is 0.04 for a one-tail test?
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Statistics Question

11/25/16

Game of dice
you're offered an opportunity to play a game where you roll 1 dice with the following results:   Roll            Result 1                 win        600 2                lose        300 3    ... more
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Statistics Question

11/25/16

1.Let X be a normal random variable with parameters μ= 8 and 𝞂 = 3.5. Find the following probabilities.
Stat question need help!
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Statistics Question Simulations

11/22/16

Find the probability that among 25 randomly selected people, at least 2 have the same birthday
For the above classic birthday problem, a simulation begins by representing birthdays by integers from 1- 365, where 1 represents January 1st and so on. Randomly generate 20 different groups of 25... more
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Statistics Question Statistics

11/20/16

How many percent precise is the result of the study of 250 respondents were taken from 5750 members of academic
How many percent precise is the result of the study of 250 respondents were taken from 5750 members of academic organization?
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Statistics Question

11/19/16

Test Statistic
You are going to test the claim that less than 60% of women do the incometaxes for their household.In a random sample of 600 women, 345 of them do the income taxesfor their household.Calculate the... more
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Statistics Question Statistics Probability Graphing

11/16/16

Probability Function
The probability density function f(x) of a continuous random variable X is:   f(x)={ -kx, If -1<x<o       ={k, If o≤x<1, where k is a positive constant.       ={o, otherwise. I, Graph... more
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Statistics Question

11/13/16

stats help
The participants in a television quiz show are picked from a large pool of applicantswith approximately equal numbers of men and women. If participants are pickedrandomly, what is the probability... more
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Statistics Question

11/06/16

A card is randomly selected from a deck of 52 cards. The probability that the card is between four and eight (inclusive) or is a club.
A card is randomly selected from a deck of 52 cards. The probability that the card is between four and eight (inclusive) or is a club.
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Statistics Question Stats Statistics Method

11/03/16

The variation found among raw scores in a particular group in referred to as
The variation found among raw scores in a particular group in referred to as: a. between group variation b. Within group variation C. Total variation  d. None 
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Statistics Question

10/31/16

ANOVA statistics question
An independent-measures research study compares three treatment conditions with a sample of n = 10 in each condition. The sample means are M1 = 2, M2 = 3, and M3 = 7. a. Compute SS for the set of 3... more
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Statistics Question

10/26/16

if you know the names of the remaining six students in the spelling bee, what is the probability of randomly selecting an order and getting the order that is us
P(selecting the correct spelling bee order)
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Statistics Question Statistics

10/26/16

statistics
UCLA undergrads sllep a mean of 7 hours a night with a standard deviation of 1.5 hours. Assume sleep time is unimodal and symmetric and refer to the the empirical Rule(68% observations fall within... more
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Statistics Question Math Statistics Math Help

10/24/16

Top 10% of the class received an A on the last test...
I don't think I've worked this problem correctly. Please help, thanks!!   A teacher says that the top 10% of the class received an A on the last test. The scores were normally distributed with... more
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