A choral conductor has 1721 singers in her choir, some of them are professional singers. The conductor wants to estimate what percentage of singers are professional, but can't ask all 1721, so she instead asks 652 singers in front and finds 15 who are professionals. 1. Identify the statistic.

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A: let we make the table for given dataDays Worked Last Year by 23 employees Department days worked…

Q: Q12. If 150 households were surveyed out of which 120 households have internet fiber cable, then…

A: Given Data: x=150-120=30 n=150

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Q: The sample data below displays the number of tornadoes per year in Missouri for the years 1995-2004.…

A: We have given the sample data below displays the number of tornadoes per year in Missouri for the…

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Q: A random sample of 1648 Texas government employees were selected for a study on race.  The table…

A: Total frequency = total no. of Texas government employees were selected for a study on race=1648 We…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Margin of error (E) = 4.5% = 0.045Significance level (α) = 1 - 0.90 = 0.10

Q: arley-Davidson motorcycles. You plan to interview an SRS of 600 new motorcycle owners. a. What is…

A: From the given problem p=55% = 0.55 , q=0.45 n= number of motocycle owners = 600

Q: Identify the type of sample ( Experimental or Observational) Then tell if the sample is biased 1.…

A: 1. Observational study: If the individuals under the study are just observed and measured based on…

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Q: student decides to spin a dime and determine the proportion of times it lands on heads. The student…

A: We have given that  Sample size n = 25 Favorable cases x =17 Population proportion p =0.5

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A: NoHerbal Hut 1Herbal Hut 2Herbal Hut…

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Q: Identify the type of bias in the survey question and reword it to remove the bias.   a.  Which is…

A: Answer: Loaded questions a. Which is less damaging to the environment: nuclear power or…

Q: We asked students in our class about the reading time per day. We got 57 responses (the sample size…

A: given data n = 57x = 4390% ci for p

Q: . When an accurate and complete list of the population is not available, a sampling will suffer…

A: We want to tell you, which one is the correct choice.

Q: According to a recent report, 21% of all adults routinely skip breakfast. A researcher believes this…

A:

Q: Determine the regression equation. (Negative values should be indicated by a minus sign. Round your…

A: Police (X) Crimes (Y) (x-xbar) (x-xbar)^2 (y-ybar) (y-ybar)^2 (x-xbar)*(y-ybar) 19 16 -2.25 5.0625…

Q: Twenty different statistics students are randomly selected. For each of them, their body temperature…

A: For part a) Answer: Option C) is correctFor part b) Answer: Option C) The value of r is estimated to…

Q: A family wants to have two children. The children can either be male or female. What is the sample…

A: Let B denotes boy and G denotes girl.

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: applying one way ANOVA on above data:   Mean n Std. Dev Variances budgets 257.4 5 11.7388…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: a.Suppose p is the population proportion of passengers who prefer aisle seats.It is needed to be…

Q: 31) A Texas survey wanted to see if only a minority of teenagers supported Gay Marriage.Suppose 120…

A: It is given that:

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A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Q3. Paired sample t test can be used in an analysis involving pre-test and post-test data or in…

A: Paired sample t test is used under following assumptions: 1) sample sizes are equal. 2) The two…

Q: What is the Sample Variance for the following numbers: 79, 77, 50, 49, 35

A:

Q: Steele Electronics Inc. sells expensive brands of stereo equipment in several shopping malls. The…

A: Answer  Given  Sample size [n] =23 P =33%     =33/100    =0.33

Q: In independent sample tests, what is the best way to ensure equivalence between samples?…

A: Given  A multiple choice question based on independent tests. Please find the below attachment for…

Q: 39. Consider these values a sample: 7, 2, 6, 2, and 3.

A: we have given sample data which is, 7, 2, 6, 2, 3 now, using  sample data points  we will find…

Q: A survey was taken on course selection and gender. The results are represented in the table below.…

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Q: 11. 1,200 people visited the most recent car show in Atlanta. A company there wanted to do a survey…

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Q: State whether each situation has independent or paired (dependent) samples. a A researcher wants to…

A: Solution: (a):Independent samples (b):Independent samples  Explanation: There are two different…

Q: A researcher asks a sample of brothers and sisters to rate how positive their family environment was…

A: Design of experiment is a branch of statistics. This basically deals with the planning, conducting…

Q: A researcher is interested in whether self-proclaimed “cat people” are more introverted than…

A: The objective is to identify the appropriate test to validate the conclusion compared to the…