For the first question, I'm having trouble understanding wich is the null and the alternative. is the null hypothesis above 4 and the alternative hypotheses  less than 4? I'm still a little confused

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A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: A bus holds students with a mean weight of 87 lb with SD = 6.5 lb Find the z-value for a group of…

A: Solution-: Given: μ=87,σ=6.5 We want to find z-value for  (a) a group of 34 students if you want the…

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A: Given The data shows that the Tigers won 8 of the 20 games, or 40%.

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Q: Imagine you are doing an Independent-Samples t-test.  For Sample 1, you get n=10, M=17.2, SS=120.…

A: Data given For Sample 1, you get n=10, M=17.2, SS=120. For Sample 2, you get n=12, M=19.1, SS=110

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A: Given that  Mean = 48 , Standard deviation = 12 , n = 36

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A: Given (a) n=16, sample mean x̄=50, s=10  (b)  When population standard deviations σ=10

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Q: Given the raw data, create a box plot that would show central tendency and variability of data in…

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A: Given data: Worker Job Performance Score Aptitude Test Score Union Membership Abbott 58 5 0…

Q: st 2 on 3 Lion 4 K The assets (in billions of dollars) of the four wealthiest people in a particular…

A: 45,29,21,19 and n = 2

Q: Problem 2 Let (,,P) be a probability space. (1) For measurable events A,B,CE A with P(C) >0 and…

A: Please note that as per our guidelines if multiple questions are posted we can answer the first…

Q: 4.52 On a particular test for a very large statistics class, a random sample of n = 4 students has a…

A: Given that  Sample size n =4 Sample mean=75 Sample standard deviation =8

Q: You are getting ready to do an Independent-Samples t-test.  You are doing it as a two-tailed test.…

A: Introduction The most familiar choice of the t-test is the independent samples t-test. It helps in…

Q: LAUSE SALT NO, 2.31 4.54 K DA LA AM B 13

A: Given data: Age Baseline Reformulated 0 1.7 1.9 0 4.28 5.91 2 4.09 5.56 11 1.24 2.45 7…

Q: ndicated z score is and to two decimal places as needed.) 67 FA F9 DELL F10 F11 F12 PrtScr ugo…

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Q: Complete parts (a) and (b) below. The number of dogs per household in a small town 0 2 Dogs…

A: Given that  Probability mass function of X is  Dogs=X 0 1 2 3 4 5 P(Dogs=X) 0.667 0.204 0.084…

Q: Suppose that a scientist has reason to believe that two quantities x and y are related and b.…

A: Hint: Differentiate the total sum of squared deviations with respect to parameters and equate the…

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A: Note: According to bartleby guidelines, expert solve only one question and rest can be reposted.

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A: Consider n1 and n2 as the sampled no. of individuals in the age groups of "20 to 39" and "40 to 49"…

Q: A small amount of the trace element selenium, from 50 to 200 micrograms (ug) per day, is considered…

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Q: 4.37 What is the probability that the mean for a random sample of 144 accounts receivable drawn from…

A: Given that  Mean = 10000 , Standard deviation = 4000 Sample size = 144

Q: (Y-1)². Use one decimal place accuracy.

A: Given that  Y ~ Uniform (1 , 11)

Q: answer d

A: The number of observations is 24.

Q: Consider a dataset of two paired variables, X and Y, that have the following properties: n=10 >0 SE₂…

A:

Q: How many combinations of 5 objects are there when selected 3 at a time?

A: Given that there are 5 object and we have to select 3 at a time.

Q: You are given the following data  Table:                          Number of Americans  with Health…

A: Given table:   Yes No Row Totals Young 750 170 920 Old 950 130 1080 Column Totals 1700 300…

Q: co2 | democrat +- cons | Coef. Std. Err. -.7743168 51.17269 .4005446 13.53402 t -1.93 3.78 P>|t|…

A: It is given that the regression output. We know that the general equation of regression line is: y =…

Q: Let X be the amount of time (in hours) the wait is to get a table at a restaurant. Suppose the cdf…

A: Formula  For continuous distribution P(a≤x≤b)=F(b)-F(a)

Q: R2.41. Models Find the predicted value of y, using each model for x = 10. a) ŷ = 2 + 0.8 In .x b)…

A: Given that  At x = 10 a) y^ = 2 + 0.8 ln(x) b) log(y^) = 5 - 0.23x c) 1/√y^ = 17.1 - 1.66x

Q: A production company in St. Louis is investigating their supplies of sheet metal. A certain kind of…

A: The question is about discrete probability distribution Given : Sheet has 6 defects per 16 square…

Q: applicant

A: Given that mean is 152.9 and standard deviation is 9.  Let X reprehensible the applicant scores.…

Q: A data set includes data from student evaluations of courses. The summary statistics are n = 85, x=…

A: We have given that, Sample size n=85 Sample mean=3.94 Sample standard deviation=0.63

Q: Suppose that X is a random variable with mean 30 and standard deviantion 4. Suppose Y is a random…

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Q: A random sample of 36 mid-sized cars tested for fuel consumption gave a mean of 26.4 miles per…

A: Given that  x̄ = 26.4 ,  ? = 2.3 , n = 36

Q: Psychological and educational tests, including MMPI are often designed so they have a mean of 50 and…

A: Given: Mean μ=50 Standard deviation σ=10

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Q: Itemized Charitable Contributions The average charitable contribution itemized per income tax return…

A: Given that.   X~N( μ , ?)   μ=792    , ?=103   Z-score =( x - μ )/?

Q: As part of a study on how people of different ages use mobile technology, each person in a sample…

A: Given that  n1 = 258 , X1 = 168 , n2 = 129 , X2 = 61

Q: How to get the P-value without using the excel formula?

A: Given that, Sample mean (x̄) = 27.70 Population standard deviation (σ) = 9 Sample size (n) = 36 The…

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A: Hint: When Cov(x,ε)=0 then error term should be zero in y=β1+β2E(x)+ε

Q: QUESTION 2 The table below shows the results from looking at the diagnostic accuracy of a new rapid…

A: SPECIFICITY  = True negative/(true negative+ false positive)   Data is given for test positive and…

Q: Hypothesis Testing. SOLVE WITH COMPLETE SOLUTIONS. Hydrophilicity of material that can be used for…

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Q: The following data give the prices (in thousands of dollars) of 6 homes that were sold in a small…

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Q: A finance analyzer have come to the conclusion that he wants to purchase stocks from Company A, with…

A: Given information, E(X)=4%=0.04 V(X)=0.49 E(Y)=6%=0.06 V(Y)=0.64 ρX,Y=0.3 W=0.4X+0.6Y.

Q: Every day a school bus driver passes the same traffic light twice, once before school and once…

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Q: The cumulative frequency function of a discrete variable X in group A is given by x < 12 12 < x < 32…

A: Hai

Q: 10. The test statistic for a two-sided significance test for a population mean is z = -2.13. What is…

A: According to the given information in this question We need to find p value