A researcher is testing a two-tailed null hypothesis at the p < .01 level with df = 45. What critical value would she or he use? Justify your answer

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Q: A Statistics instructor wishes to know the average age (in month) of his 200 students. He decides to…

A: Statistics instructor wishes to know the average age (in month) of his 200 students. He decides to…

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A: GIVEN DATA  standard normal curve  Z~N(0,1) P(0.65&lt;z&lt;1.1) = ?

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A: GivenMean(μ)=0standard deviation(σ)=1

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A: The question is about variables Introduction : Quantitative variable : If a variable represents a…

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Q: Medicare would like to test the hypothesis that the average monthly rate for one-bedroom…

A: From the provided information, Sample size (n) = 12 Sample average (x̄) = 3690 Sample standard…

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A: It is given that the rate of occurrence of new cases is 2 per month.  Considering the average rate…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given;population proportion(p^) = 0.55margin of error(E) = 0.01confidence level 95%

Q: daughters. The data pairs are from a journal kept by Francis Galton. Use the listed paired sample​…

A: According to the given information in this question We need to find test statistic and p value and…

Q: The mean incubation time for a type of fertilized egg kept at a certain temperature is 19 days.…

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Q: 987 rainfall (in inches) 654 32 Where is the mode in these two sets of data? Beijing 0 JAN FEB MAR…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: Please answer letter "d". Upvote will bbe given!

A: Sample Temp (x) Temp (y) 1 171 0.86 2 173 1.25 3 174 1.46 4 175 0.95 5 175 1.17 6 176…

Q: Suppose that annual precipitation is normally distributed, with mean 50 inches, and standard…

A: From the provided information, Mean (µ) = 50 Standard deviation (σ) = 12 X~N (50, 12)

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A: From the given information, The mean customer satisfaction rate is 7.5. The standard deviation for…

Q: Use this data and model the distance spent swimming using the arms to predict the total time. What…

A: In this situation the time is dependent variable (Y) and “arms” is independent variable (X). The…

Q: Toby’s Trucking Company determined that the distance traveled per truck per year is normally…

A: Given that: Population mean, μ=50000 Population standard deviation, σ=12000

Q: An article appeared in an Australian newspaper. It described a study of academic performance and…

A: Given that: Sample mean, x¯=3 Sample standard deviation, s=1.1 Sample size, n=50 Level of…

Q: . What is the best estimate of the proportion of adults who believe that immediate government action…

A: It is given that  Favourable cases, X = 975 Sample size, n = 1762

Q: Use the Sprint data, given again below, to test whet month than men do at the 5% significance level.…

A: For Men (x1): sample size (n1) = 10 sample mean (x̄1) = Σx1 /n1 = 3307/10 =330.7 sample  variance…

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: From the provided information, The probability distribution table is as follow: Number of girls x…

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Q: 5.2 Use your answers to Exercise 5.1 to sailbob a. Compute a 95% interval estimate for B₂. b. Test…

A: Here in above example we have to find 95% confidence interval for the estimate of the β2…

Q: 14.44 (EX) Cicadas as fertilizer? Every 17 years, swarms of cicadas emerge from the ground in the…

A: Given information: P-value = 0.031

Q: In a dance class, there are 20 females and 25 males. Fifteen are dancers from G-Force. Eight of the…

A: Given information: n(F)=20n(M)=25Total=45n(G-Force)=15n(M∩G-Force)=8 Find: P(F∪G-Force)=?

Q: 12 units of Iphone 14 is assembled by 1 worker in 0.5hours.  The units will then be transferred in a…

A: Given Information: 12 units of iPhone 14 are assembled by 1 worker in 0.5hours (30 minutes) The…

Q: #2 A bowl contains 3 yellow beads, 21 green beads, 12 blue beads, and 6 red beads. if 1 bead is…

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Q: Ancient insect lives are approximately uniformly distributed throughout the year. They can be said…

A: given data X~U(0,52) uniform distribution probability function  f(x) = 1b-a = 152-0 = 152

Q: چلے The authors of a paper describe an experiment to evaluate the effect of using a cell phone on…

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Q: A student on internship asked 90 residents in district Y two questions during afield survey.…

A: It is given that,  30 and 50 residents answered "Yes" to questions 1 and 2 respectively. And the…

Q: Frequenc Which distribution is more asymmetric? 40 30- 20 10 0- 40 Mm (hybrid) 30 20 40- 0+ 40 30-…

A: Symmetric A distribution is said to be symmetric if the left-hand side of the distribution is the…

Q: In both public and nonpublic company audits nonstatistical sampling is considered ac Attributes…

A: Given::

Q: *R2.47. Companies assets and sales How are the assets and sales of major corporations related? The…

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Q: A model fit predicting preference for President (Democrat, Republican, Independent) using x = annual…

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Q: Use this data and model the distance spent swimming using the arms to predict the total time. If the…

A: First we fit the linear regression model to the above data set. Here time depends on distance spent…

Q: Write a program to generate two independent and uniformly distributed random variables x₁and…

A: It is given that the random variable X follows Uniform distribution with parameters a (min)=-1 and b…

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Q: Calculate the 95% margin of error in estimating a population mean μ for the following values. (Round…

A: From the provided information, Sample size (n) = 20 Sample variance (s2) = 64 Confidence level = 95%

Q: Researchers have been studying acorns produced by trees in a certain region. The acorns are used as…

A: A sample of 14 observations are given. That is the sample size n = 14 We have to find the 90%…

Q: Suppose that, for one semester, you can collect the following data on a random sample of college…

A: Given information: For one semester, the data was collected from a random sample of college juniors…

Q: se the following scenario in your answering of questions 9 and 10. (Use the same answer choices for…

A: Given Information: From a sampling frame of 1000 individuals (500 men and 500 women), a sample of…

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A: Given information: Brokerage Satisfaction with Trade Price Satisfaction with Speed of Execution…

Q: On a Normal Distribution, N(μ, o), we know that the following are always Q1: -0.67o+fl Q2:μ Q3:0.670…

A: For a distribution, the value of Q1, Q2, and Q3 are defined such that exactly 25%, 50%, and 75% of…

Q: A casino game consists of selecting two balls, without replacement, from an urn containing 4 balls…

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Q: Find the derivative of the function. h(x) = - 22م 3x + 4/x

A: Formula: ddxef(x)=ef(x)*ddxfx

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 36…

A: From the provided information, Mean (µ) = 36 Standard deviation (σ) = 3.7 X~N (36, 3.7)

Q: Suppose we want to test whether there is a difference between the room rates of luxury hotels in New…

A: It is given that 20 random luxury hotels in new York and 30 random luxury hotels in L.A.

Q: Suppose you wish to determine the proportion of college students in NC who receive some form of…

A: Givenconfidence level=95%Margin of error(E)=0.04sample proportion(p^)=0.78

Q: (c) the first is blue and the second and third are not blue

A: total number of beads contains in a bowl = 1414 beads = 5 red beads + 6 blue beads + 3 violet beads3…