A roulette wheel has 38 potential outcomes when it is spun, 18 of which are red, 18 of which are black, the remaining two being green. The 38 outcomes are supposed to be equally likely. To make sure its roulette wheel is functioning properly, a casino spins it 3800 times, obtaining black 1707 times. Is this too few? That is, can the result be explained as the result of chance variation, or does it suggest that there is something wrong with the roulette wheel?

Q: A health psychologist wants to determine if there is an average effect commonly called “the freshman…

A: Given : A health psychologist wants to determine if there is an average effect commonly called “the…

Q: hows the total number nd of the study.

A: The given data is Number of convictions Frequency 0 265 1 49 2 21 3 19 4 10 5 10 6…

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A:

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A: Givensample size(n)=743No.of teend were considered a target of…

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A:

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A: Solution: Given information: n = 210 Sample size  p= 0.11 Population proportion

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A: Given Information : The P&G marketing team has created two potential slogans for the new Smile…

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A: To find: What kind of hypothesis test do you think would be appropriate for this study?

Q: A survey was conducted to determine whether hours of sleep per night are independent of age. A…

A: Solution: The observed frequency table is  Hours of sleep  Age Group  39 or Younger  40 or…

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A: Here one proportion Z - test stats is applicable

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A: Experimental Study: If some treatments are applied on the individuals in order to observe the…

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A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…

Q: Cyberbullying In 2018, the Pew Research Center did a study on cyberbullying. A sample of 743 teens…

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A: The question is about ANOVA Given : Total no. of groups ( k ) = 3 No. of individuals under group 1 =…

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A: The hypothesis is an assumption that is being tested.

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A: Hence, the population mean is $21.84

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A: Note: Thank you for the question. Since only 25 data values are given, we have obtained mean and…

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A:

Q: You are interested in whether level of education influences a person's exposure to the media. You…

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A: The chi-square test statistic is χ2=7.77 and the P-value is between 0.02 and 0.025.

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A: Given data, p=40%=0.4 n=8 Let X be event that they consume caffiene and smoke. P(X<=6)=?

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A:

Q: A criminal psychologist is interested in whether individuals in high power corporate positions are…

A: a) The null and alternate hypothesis is H0 : μ1=μ2=μ3 HA : Not all the population means are equal b)…

Q: Cyberbullying In 2018, the Pew Research Center did a study on cyberbullying. A sample of 743 teens…

A: We have given that,  Favorable cases (X) = 438 and sample size     (N) = 743 Then,  We will find the…

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A: A study is provided and the objective is to answer the given questions.

Q: A survey was conducted to determine whether hours of sleep per night are independent of age. A…

A: Given Information  : A survey was conducted to determine whether hours of sleep per night are…

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A: It is needed to find the type of bias.

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A: Given that  Random sample size (n) = 225 People responded they have played app based games in the…

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A: Statistical hypothesis means the decision about a population parameter. Here we look at the data we…

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A: Opinion Female Male Total Almost no chance 139 86 225 Some chance but probably not 156 189 345…

Q: In a survey of 1220 adults in a​ country, 58​% said the​ country's leader should release all…

A: Observational Study - An observational study or a survey is the one that simply record the…