Use the normal approximation to the binomial to find the probability for  =n=12, p0.5,  and  ≥X9 . Round  z -value calculations to  2  decimal places and final answer to  4  decimal places.   The probability is

Q: The test statistic of z = 1.26 is obtained when testing the claim that p > 0.2. a. Identify the…

A: Given: Test statistic (z)= 1.26 Alternative hypothesis: Ha:p>0.2

Q: A Type I error is the probability of failing to reject a false null hypothesis. Select one: True O…

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Q: Researchers analyzed IQ data on preterm children at age 7-8 years. The mothers of the children in…

A: Given data is as follows:   Group I Group IIa Group IIb x = Mean 99.9 92.5 104.8 Standard…

Q: Given below are the number of successes and sample size for a simple random sample from a…

A: We have given that  x = 12, n = 30 => p̂ = x/n = 12/30 = 0.40 Confidence level (c) = 98% = 0.98

Q: Are the years of education of a child dependent on the years of education of their parent? The table…

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Q: n you randomly assign 25 of them to play a violent video game and the other 25 of them to play a…

A: Total number of school boys considered for the study  = 50 Sample 1: 25 Sample 1 boys are given to…

Q: A sample mean is 6.7, sample size is 20, and population standard deviation is 0.6 are given. Ho:…

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Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

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Q: You wish to test the following claim (H) at a significance level of a = 0.10. Ho: P1 Ha: P₁ = P₂ P2…

A: The question is about hypo. testing Given : No. of successes obtain from popl. 1 ( x1 ) = 444 No. of…

Q: Perform an appropriate statistical test using the dataset (Sheet name: Raw Data) if a researcher…

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Q: Satisfied? A  2010  poll asked people in the United States whether they were satisfied with their…

A: Confidence interval are used to determine the relationship between the parameters. It has two parts,…

Q: Let X₁,..., Xn be iid n(u,02). Find a function of S2, the sample variance, say g(S²), that satisfies…

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Q: A psychologist has developed a new intelligent test for the 8th graders. She finds that the mean of…

A: Mean(µ) = 100Standard deviations (σ) = 15X ~ N (µ, σ )= N(100, 15)

Q: Students A B C DEFG D Grade (x) 84 87 90 91 88 75 91 85 85 90 82 78 GWA (y) 1.75 2.00 3.00 2.75 2.75…

A: Given data, x y 84 1.75 87 2 90 3 91 2.75 88 2.75 75 1.25 91 2.5 85 2.25 85 2…

Q: 11. Using Matrix approach, compute SSTO. O 0.9421 O 30.4121 O 3.8073 O2.8652 O Other:

A: The observations are as follows: y x 1.75 84 2 87 3 90 2.75 91 2.75 88 1.25 75 2.5…

Q: Find the regression equation, letting the first variable be the predictor (x) variable. Using the…

A: Regression Equation: The Regression Equation is used to predict the response or dependent variable y…

Q: What is the value of Σ(X2 + 2) for the following scores? Scores: 9, 10, 8, 6, 5, 9, 6, 5 a. 450…

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Q: In a normal distribution, what z-score cuts off the top 95% of the distribution? z = 1.65…

A: Given Top 95 % distribution

Q: Assuming the population has an approximate no mean = 39 with a sample standard deviation Round the…

A: A sample size n=20 Sample mean=x=39 Sample standard deviation(s)=6 α=0.01

Q: In order to answer the question, "If total rainfall turns out to be 12.7 inches next growing season,…

A: Whenever you're deciding which statistical procedure to use always keep a check of dependent and…

Q: Annual high temperatures in a certain location have been tracked for several years. Let X represent…

A: Given: x y 5 26.25 6 24.78 7 22.01 8 19.94 9 20.67 10 17.8 11 19.83 12 17.06…

Q: A population has a mean μ = 83 and a standard deviation = 29. Find the mean and standard deviation…

A: Given that  Population has mean 83 and standard deviation 29. Population mean (μ) = 83 Standard…

Q: A financial talk show host claims to have a 63 % success rate in his investment recommendations. You…

A: here given , A financial talk show host claims to have a 63 % success rate in his investment…

Q: The owner of a farmer's market was interested in determining how many oranges a person buys when…

A: Given data is x 1 2 3 4 5 6 7 8 9 10 P(x) 0.05 0.19 0.20 0.25 0.12 0.10 0 0.08 0 0.01

Q: IQ scores or normally distributed with the mean of 100 and a standard deviation of 15. A simple…

A: GivenMean(μ)=100standard deviation(σ)=15sample size(n)=13standard deviation(s)=7.2significance…

Q: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 68.8 bpm. For a random…

A: Given that  Claim : The mean pulse rate of adult males is equal to 68.8 bpm. Sample size (n) = 144…

Q: The standard normal distribution indicates that the proportion between 0 and +1.5 is .4332 (43%).…

A: The standard normal distribution indicates that proportion between 0 and +1.5 is 0.4332. So, 43% of…

Q: Two high-school cross-country coaches from different teams are discussing their boys' and girls'…

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Q: Which option below contains only things that match each other? pα, Obt in tail past Crit, Conclude…

A: When we do an experiment, We get result p value is probability to get more extreme value than…

Q: I am to make an Excel spreadsheet  that provides original data organized in a chart, and displays…

A: Here the given data is represented in excel as shown below

Q: Do men and women differ, on average, in terms of the amount of television that they watch each day?…

A: Since here the researcher wanted to determine whether there is a difference in mean number of…

Q: Whenever the slope of a regression line is zero, the correlation coefficient will also be zero.…

A: We have to tell, If slope of regression equation becomes zero than correlation coefficient will also…

Q: sample of 85 people has a variance of 25.  In that case, the standard deviation is _____ and the sum…

A: Given that  Sample size (n) = 85 Sample Variance (s2) = 25     We know that  Sample standard…

Q: What is a distribution of means and how it differs from a population distribution?

A: The set of all possible values for a property, together with a mechanism to indicate how relatively…

Q: A farmer was interested in determining how many grasshoppers were in his field. He knows that the…

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Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

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Q: The monthly earnings of a group of business students are normally distributed with a standard…

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Q: The ANOVA F test is a test to determine if there is evidence that  a particular mean is different…

A: The ANOVA F test we test if the means of the populations are all same. Let M1, M2, M3,..., Mn be the…

Q: For the following Before/After data, calculate the t-obtained for a Related-Samples t-test. a. 2.53…

A: For using Paired t test 1) sample size of two samples should be equal 2) two samples should be not…

Q: A biologist is comparing the intervals (m seconds) between the mating calls of a certain species of…

A: Given data is t C 8 7 11 12 15 18 25 23 m secs 6 4 6 8 3 8 6.5 2

Q: Expedia would like to test the hypothesis that the proportion of United Airline flights that arrive…

A: It is given that Sample size n = 110 Number of flights arrived at time, X = 82 Level of significance…

Q: z-score cuts off the top 65% of the distribution? a. z = 0.7422 b. z = 0.2578 c. z =0.39 d. z =…

A: Given that.   X~N( 0 , 1 )   μ=0  , ?=1 (for standard normal distribution)    Z-score =( x - μ )/?

Q: tics teacher cla ms that, on average, 20% of his class get an A, 25 get a B, 35% get a C, 10% get a…

A: Goodness of fit is very powerful test for testing the significance of the discrepancy between theory…

Q: For a normal distribution with a mean of μ = 10 and a standard deviation of σ = 2, what is p(5<X<15)

A: It is given that X follows N(mean = 10, SD = 2), then Z = (X - mean)/SD follows N(0,1)

Q: A statistical research yields to the sample proportion of a certain feature in a certain community…

A: It is given that  Proportion, p = 0.56 Margin of error, ME = 0.05 Confidence interval = 90%

Q: Sales (19) _____________ Sales (20 _______________ Sales (21) _______________

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Q: Consider the hypotheses shown below. Given that x = 107, a=26, n=43, a=0.01, complete parts a…

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Q: For the following two samples of scores, calculate the pooled variance from an Independent-Samples…

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Q: 16,10,30,32,35,23,17,19,24,29,26,17,12,18,38,27,18,31,33,32,41,22,35,…

A: The total number of basketball games played by the player = 68 The total points obtained from these…

Q: The probability distribution for the number of sales done by a new Number of Sales per day x Number…

A: The probability distribution given in the question is as follows: X P(x) 0 0.16 1 0.19 2…