An experimental design for a paired t test has 26 pairs of identical twins. How many degrees of freedom are there in this t test? There are degrees of freedom. (simplify your answer)

Q: na National Institute on Alcohol Abuse and Alcoholism survey, 33% of American adults said that they…

A: Given n=2300, P=0.33, p'=0.35

Q: A researcher is interested in finding out the factors which determined the yearly spending on family…

A: F=3.00, n=196

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A: It is given that confidence level is 0.95, population standard deviation is 80.3 and margin of error…

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A: The five-number summary involves five different measures of the data set. It is widely used in the…

Q: An automobile mileage study tested the following hypotheses. Hypothesis Conclusion H0: µ  25 mpg…

A: The hypothesis is H0: μ≥25 vs Ha: μ<25 σ=3 α=0.02 μa=24 μ0=25

Q: A simple random sample of 10 pages from a dictionary is obtained. The numbers of words defined on…

A: Hypothesized mean µ = 47 words Sample size (n) = 10 Mean x̅ = 52.8 words Standard deviation (s) =…

Q: A normal distribution has a mean of 40 and a standard deviation of 4 Use the​ 68-95-99.7 rule to…

A: Solution-: Given: μ=40,σ=4 We want to find  (a) the percentage of values in the distribution between…

Q: N ional Probability Quick Review: "the rules" (the general rules that work in all situations) •…

A: Here AS PER GUIDELINES I HAVE CALCULATED 3 SUBPARTS PLZ REPOST FOR REMAINING PARTS... Here use basic…

Q: The regression equation between two variables X and Y is Y = 1.8 + 2.5 X Find the predicted Y…

A: Answer: From the given data, The regression equation for X and Y variables is, Y = 1.8 + 2.5 X

Q: A baseball player has a batting average of 0.28. Assume that he comes to bat 5 times in a game. a)…

A: p=0.28 sample size(n)=5 Let "x" be the no. of hits in a game  x~Binomial(n=5,p=0.28)…

Q: In a National Institute on Alcohol Abuse and Alcoholism survey, 33% of American adults said that…

A: Population proportion, p=0.33 Sample size, n=2300 Sample proportion, p^=0.35

Q: |μ Researchers conducted a study to determine whether magnets are effective in treating back pain.…

A: There are two independent samples which are Treatment and Sham We have to test whether those treated…

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A: Country A <- subset(Vitamin D, subset= Country=="A") Exp: This line is selecting all…

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A: As per the honor code and guidelines, we are supposed to solve three subparts. I will solve 5…

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: Sample size, n=44 Sample mean, x¯=94 Population standard deviation, σ=18 Confidence level=0.99

Q: Bags of a certain brand of tortilla chips claim to have a net weight of 14 oz. Net weights actually…

A: Hypothesis Ho: μ=14 vs H1: μ<14 P value=0.001, level of significance ɑ=0.001

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A: Xi be the iid random variables ; i=1,2,...,n

Q: P-MATH-1342-82302 20235P Find the area under the standard normal curve between the given z-values.…

A: From the provided information, The z values are z1 = -1.67, z2 = 1.67

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A: Correlation is measurment of strength of linear relationship between two varaibles. For example if…

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A: That is, there is no evidence to conclude that the length of bolts is greater than the mean value of…

Q: 2. A history teacher records the SAT scores of all 87 of her students. We use these data to…

A: Sample size n=87 The SAT scores of all 87 students are recorded. This data is used to construct a…

Q: The range statistic is an unbiased estimator of the population range. O True False

A: The range is a measure of dispersion.

Q: The average body temperature of humans is believed to be 98.6°F with a standard deviation of 0.9°F.…

A: It is given that: Population standard deviation:σ=0.9, sample size: n=19  and sample mean :x¯.=98.9

Q: 1. You go to the snack bar to buy a bagel and a drink for lunch. You can choose from a plain bagel,…

A: As per GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION ONLY PLZ REPOST FOR REMAINING WITH NOTE I…

Q: 50. In which histogram (or histograms) would the 51. For which data set would we expect the standard…

A: Histogram is a graphical representation that depicts the distribution of data.  If the histogram is…

Q: When Americans eat out at restaurants, most choose American food; however, tastes for Mexican, *…

A: NOTE: Hi there! Thanks for posting the question. Since you have posted a question with multiple sub…

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A: AS PER GUIDELINES I HAVE CALCULATED 1ST MAIN QUESTION PLZ REPOST FOR REMAINING PARTS . Here Given…

Q: 5. An investor has invested in nine different investments. The dollar returns on the different…

A: The probability of the z value is calculated using the normal distribution. The z score is the…

Q: The mean salary of a random sample of 50 major league baseball players for 2012 is $3.44 million…

A: Sample size, n=50 Sample mean, x¯=3.44 Population standard deviation, σ=0.712

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A: Science teachers from LPU collected the data about the typhoons that entered the country each year…

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A: For the hypothesized claims H0:μ=50000 versus  H1:μ≠50000, the critical region has been defined as:…

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A: Solution : Given that : Consistent Hashing is a technique used in distributed computing to map…

Q: The sample should include (Type whole numbers.) men and women.

A: Here given MOE = 0.03 confidence level = 99%

Q: Calculate the sample standard deviation using the below data n= 65, SS= 142 Round your answer…

A: Answer: From the given data, Sample size (n) = 65 Sum of Squares (SS) = 142

Q: You are conducting a study to see if the proportion of women over 40 who regularly have mammograms…

A: In hypothesis testing, we use two different tails. They are one-tailed and two-tailed. There are two…

Q: What does the sign and actual number tell you in a correlation?

A: Correlation coefficient denoted by " r ". Correlation coefficient have value between -1 to 1.

Q: Find the probability that you get 5, 5, 5, 5. b. Find the probability that you get NO 5s. c. Find…

A: AS PER GUIDELINES I HAVE CALCULATED 3 SUBPARTS PLZ REPOST FOR REMIANING . HERE given , standard die…

Q: The amount of time that people spend going through airport security at a busy airport is normally…

A: Answer: From the given data, mean (μ) = 28 Standard deviation(σ) = 6.2 X follows normal…

Q: A random sample of N = 35 individuals is selected from a population with a mean of 60, and a…

A: n=35 Sample sizeμ=60 Population men x= 60.2 Sample mean SS= 296 sum of square s=SSn-1s=29634s=2.9506…

Q: A continuous random variable has a uniform distribution if its values are spread evenly over the…

A: Continuous random variables are those Have values between finite interval or infinite interval .

Q: The mean number of hours that American women who worked outside of the home per week was 34.6 hours…

A: The random variable X is the number of hour American women who worked outside of the home per week…

Q: Suppose that in a random selection of 100 colored candies, 27% of them are blue. The candy company…

A: Suppose that in a random selection of 100 colored candies, 27% of them are blue. The candy company…

Q: Two substance abuse clinics would like to compare retention rates for the programs offered by each…

A: The confidence level is 0.95 . So the level of significance is a= 0.05

Q: What is the p value if, in a right tail hypothesis test, Z statistic = +1.92 Round to four decimals…

A: Answer:- Given, Z statistic = + 1.92  The test is right tailed hypothesis test. So, we need to find…

Q: Consider a random variable X that follows a uniform distribution with a= 1 and b = 4 Find the…

A: Answer: From the given data, X follows a uniform distribution, a = 1  and b = 4

Q: Is there a positive, negative, or no relationship between mask wearing and COVID-19 contraction?…

A: There are 2 variables; mask wearing and COVID-19 contraction.

Q: need help with writing the probability statement i have tried P(64.7<X<67.3) and it tells me that it…

A: Standardization in Normal distribution If X is a Normal random variable with mean μ and standard…

Q: Test the above hypothesis is a random sample of 250 users has 210 successes. Solution: [Write…

A: As per policy I have calculated first question plz REPOST with note I need this question.  Null and…