QUESTION 1 A magazine article reported that more than 11% of adults buy takeout food daily. A fast-food restaurant owner surveyed 200 customers and found that 32 said that they purchased takeout food daily. At  = 0.05, is there evidence to believe the articles’ claim? QUESTION 2 [5m] The average family size was reported as 3.18. A random sample of families in a particular district resulted the following family sizes: 5 4 5 4 4 3 6 4 3 3 5 6 3 3 2 7 4 5 2 2 2 At  = 0.01, does the average family size in that district differ from the national average?

Q: Question 28 Previous QUESTION 17 An economist is interested in studying the monthly incomes of…

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Q: as only children (no siblings). However, in the special program for talented and gifted children, 91…

A: According to the given information in this question We need to apply z test for one population…

Q: QUESTION 47 A independent sample t-test with a df = 33 resulted in an observed t = 4.29. What would…

A: Given that, an independent sample t-test with a df = 33 resulted in an observed t = 4.29.

Q: QUESTION 20 "A clinican has found a significant effect of a new drug and wants to know the effect…

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Q: QUESTION 16 The sum of the squared deviation scores is SS = 189.5 for a population of N = 59 scores.…

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Q: QUESTION 6 At a police checkpoint for drunk drivers, some cars are stopped at random many others are…

A: Introduction - Sample -  A sample refers to a smaller , manageable version of a larger group . It is…

Q: Question 21:  In a certain school district, it was observed that 25% of the students in the element…

A: The following information is provided:  The sample size is n = 283 sample proportion is P  = x/n =…

Q: The following is a set of hypotheses, some information from one or more samples, and a standard…

A: Given, Hypothesis : H0 : p1 =p2 Ha : p1 < p2 n1 = 170 ,  p^1 = 0.17 n2 = 80 ,  p^2 = 0.23 The…

Q: QUESTION 6 "A researcher is interested in knowing whether fans of ""The Office"" watch more Netflix…

A: Hypothesis test are used to compare sample and the population. Hypothesis test are of two types,…

Q: An educator estimates that the dropout rate for seniors at high schools in Colorado is 15%. Last…

A: Given,n=300x=34p^=xnp^=34300=0.1133H0:P≠0.15H1:P=0.15

Q: QUESTION 7 "A student wants to test whether there is a significant difference in IQ scores between…

A: Solution The researcher wants to compare the means for the two independent samples.

Q: In a sample of 80 new residents who received a coupon for a two month free membership to a country…

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Q: At α = 0.10 level of significance, is there enough evidence to reject the educator’s claim?

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Q: QUESTION 4 A recent study (“Snack Ads Spur Children to Eat More,” The New York Times, July 20, 2009,…

A: The sample size for children who watched a cartoon with food advertising ate(First sample) is 59,…

Q: QUESTION 5 Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of…

A: Overall made free throw percentage represents the population proportion of the distribution. In a…

Q: The US Department of Energy reported that 52% of homes were heated by natural gas. A random sample…

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Q: QUESTION 6 Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of…

A: Formula : Number of failure = 1-p

Q: QUESTION 28 Most professional health societies recommend that college students should sleep, on…

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Q: QUESTION 6 Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of…

A: Given that, during one off-season, Shaq had been working with an assistant coach on his free-throw…

Q: what is the test statistic?

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Q: Question 2: Test the claim that the mean GPA of night students is larger than 3.5 at the .01…

A: Given data; Population mean = 3.5 Sample size = 65 Sample mean = 3.51 Significance level = 0.01

Q: Question 9 The marks obtained in a Statistics paper by a random sample of 200 male students have…

A: The following information has been given: n1=200          n2=150x¯1=54.6         x¯2=57.1s12=101.3…

Q: QUESTION 1 1) A medical research team created a special treatment program to reduce Systolic blood…

A: The hypothesized mean is μ0=120

Q: Question 5 A Last year the mean cost u for a one-bedroom rental in a certain city was $1,200 per…

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Q: Nationally, patients who go to the emergency room wait an average of 5 hours to be admitted into the…

A: Given data : sample size, n = 10 sample mean, x̄ = 3.8 sample standard…

Q: QUESTION 8 Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of…

A: Given that Shaquille O' Neal has overall 53.3% free throw over the course of his career and a simple…

Q: Question 2: Consider testing the hypotheses Ho :p = 0.4 versus Ha :p> 0.4. Four possible sample…

A: It is usually reasonable to model the occurrence of defectives with the binomial distribution, where…

Q: QUESTION 2 Find the value of the test statistic z using z = The claim is that the proportion of…

A: Given,sample size (n)=681sample proportion(p^)=0.30population…

Q: stion 10: You are conducting a study to determine if there is a significant difference between…

A: Given data,n1=60x1=160s1=7n2=55x2=155s2=8Calculate the test statistic t ?

Q: QUESTION 7 Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of…

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Q: QUESTION 2 Many elementary school students in a school district currently have ear infections. A…

A: Introduction: Denote p1, p2 as the true population proportions of students of the two schools, who…

Q: QUESTION 47 A independent sample t-test with a df = 27 resulted in an observed t = 4.27. What would…

A: Here, Given values are, df=27 t=4.27

Q: QUESTION 19 Consider the following context: Two bus lines, Essex Express (EE) and Hudson Heights…

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Q: QUESTION 5 "The results of a single sample t-test are reported as follows in a scientific report:…

A: Given data The results of a single sample t test are responded as follows in a scientific report…

Q: survey conducted in 2015 by the health center at a university showed that 29% of the students…

A: A hypothesis is said to be left-tailed if the population parameter is less than some hypothesized…

Q: QUESTION 15 A repeated-measures experiment and a matched-subjects experiment each produce a…

A: For a repeated-measures experiment and a matched-subjects experiment, each produces a t statistic…

Q: QUESTION 4 4% of the world population has an outie belly button. In a random sample of 50 people,…

A: We want to find the distribution of sampling distribution

Q: QUESTION 16 The sum of the squared deviation scores is SS = 113.2 for a population of N = 80 scores.…

A: Formula : Variance of population = SS/N

Q: QUESTION 2 Researchers conducted two surveys about teens are their use of social media. The first…

A: We want to find then difference in proportion and standard error amd 99% CI for difference in…

Q: Question 1 A mail order firm claims that new procedures enable it to dispatch orders more quickly…

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Q: Question 20:  In a certain school district, it was observed that 30% of the students in the element…

A: Given,n=346x=125p^=xnSamle Proportion p^=125346=0.3613α=0.01

Q: Question 3 The average score of all sixth graders in school District A on a math aptitude exam is 75…

A: The hypothesis test used to compare the population and sample. Two types of hypothesis test, they…

Q: QUESTION 8 We wish to check that normal body temperature may be more than 98.6 degrees for a certain…

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Q: What is one advantage of random sampling?     Our sample is more representative of the overall…

A: Random Sampling: drawing sample such that the it is true representative of population.

Q: QUESTION 5 Any basketball fan knows that Shaquille OʻNeal, one of the NBA's most dominant centers of…

A: Given: P = 53.3% P = 0.533 n = 39 X = 26 Formula Used:

Q: QUESTION 2 Consider the following hypotheses statement for the proportion of defective parts…

A: Given that  Sample size n =83 Sample proportion p^=0.4462

Q: Question 6 A business analyst is investigating whether the mean amount of purchases made by…

A: Identify the correct option for the given study.   The correct option is identified below as…

Q: QUESTION 15 A repeated-measures experiment and a matched-subjects experiment each produce a…

A: 15) Solution: Given : The degree of freedom for repeated measure experiment and a matched subjects…

Q: Question 5 The mayor claims that solar geyser are installed in more fran 65% of all RDP houses…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.