B0/1 pt 53 19 O Details A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 7% margin of error at a 99% confidence level, what size of sample is needed? Give your answer in whole people.

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A: From the provided information, A survey of women who are the main meal preparers in their households…

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Q: Determine the critical​ t-scores for each of the conditions below. ​a) ​one-tail test, α=0.025​,…

A: We have given that,  ​a)​one-tail test, α=0.025​, and n=39 ​b)​one-tail test, α=0.01​, and n=34…

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Q: If the probability distribution of the variable is X and the number of containers sold from this lot…

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Q: ): Now supposl that X, n ari undependent and e atugy Mi Lt)s exp {e;t? yor all i E { 1, ".n}.gor t…

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Q: 30. Construct a 85% confidence interval around the sample mean of the decrease in diastolic pressure…

A: We have given that,  Sample mean = 11.399, Standard deviation= 13.309 and sample size (n) = N = 991

Q: 3) is .6, the probability that B occurs is .3, and the probability that either A or B occurs is .5.…

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Q: Alex decides to go to a casino and play his 3 favorite slot machines. He knows from experience that…

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Q: An apple juice producer buys all his apples from a conglomerate of apple growers in one northwest…

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Q: solve asap urgent plz

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Q: Student Math Test Score 1 30 2 28 3 29 4 20 5 18 6 20 7 29 8 29 9 30 10 26 11…

A: x<-c(30     ,28     ,29     ,20     ,18     ,20     ,29     ,29     ,30     ,26     ,28     ,19…

Q: Create a normal distribution and explain the test scores of the students in each particular area.…

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Q: Participant Keyboard A Keyboard B Keyboard C Keyboard D A 6. 3 -- 5. 4 4 -- -- D 7. 3 -- 4 6. -- --…

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Q: Find the area under the standard normal curve to the right of z=1.69

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Q: ntic croaker fish are normally distributed, with a mean of 11.3 inches and a standard deviation of…

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Q: Not everyone pays the same price for the same model of a car. The figure illustrates a normal…

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Q: Suppose X and Y are the random variables with joint PMF given by: X/Y 11.2 5.75 -3 0 0.07 -2 0.2…

A: Fisrt find the marginal pmf of X

Q: What is an outlier?

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Q: According to a report done by S& J Power, the mean lifetime of the light bulbs it manufactures is 45…

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Q: For the linear equation Y = 2X + 5, if X increases by 1 point, how much will Y increase

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Q: The numbers of hours worked (per week) by 400 statistics students are shown below. Number of…

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Q: 2. A corporation administers an aptitude test to al new sales representatives. Management is…

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Q: Let x~ possion(alpha). Show that E[x(x-1)(x-2)....(x-k)]=ak+1

A: Solution

Q: A random sample of size n = 40 is drawn from a population with the 9) ( (unknow population mean µ.…

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Q: You have data on 945 teenage girls, all below the age of 20. The data contain an indicator for…

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Q: A grinding machine will be qualified for a particular task if less than or equal to BN of the parts…

A: Given that  Sample size n =200 Favorable cases x =20 Sample proportion p^=x/n  =20/200 =0.1

Q: I. Creatively illustrate and explain the different properties of the standard normal curve. *Write…

A: Standard normal curve: Standard normal curve or standard normal distribution has a mean of 0 and a…

Q: Test Scores of 15 Students: 25 26 27 30 16 16 25 26 27 30 15 15 15 16 27 Find the probability that…

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Q: 26. Sketch a scatter plot for the data given in Question 21. Include the regression line. Are…

A: The data set shows x and y values.

Q: 1. A survey of 30 households found that the mean age of an LED TV is 5 years. Assuming the standard…

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Q: A medical researcher wants to estimate the proportion of newborn infants that have antibodies for a…

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Q: A tech company purchases memory cards from a supplier. The failure rate of these cards (measured in…

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Q: 3. Suppose a value is chosen “at random" in the interval [0,6]. In other words, x is an observed…

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Q: A two-tailed test, computed t-value = 1.845, df = 10 O 0.025 > 1/2 p > 0.05 0.05 > p> 0.10 O 0.05 >…

A: For the given data Select the correct choice

Q: Q3/ In a cement store there are (1000 ) bags, (700) of which are salt- resistant , (200) of them are…

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Q: The test statistic of z = - 2.88 is obtained when testing the claim that p# 0.375. This is a…

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Q: C. Find the 99% confidence interval for u. d. What conclusions can you make, based on each estimate?

A: Given that  Sample size n =100 Sample mean =16 Variance =16 SD=4

Q: Solvent cement is used to join PVC joints. Researchers are interested in predicting the amount of…

A: From the output, the slope is -0.061 and the intercept is 8.693.

Q: Consider the following 2-stage least squares regression output: . ivregress 2sls jail c.age##c.age…

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Q: Suppose you want to determine if the number of hours studying for an exam is associated with the…

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Q: A pizza place recently hired additional drivers and as a result now claims that its average delivery…

A: Given Sample mean x̄=40.4, population standard deviations σ=10.5, level of significance ɑ=0.10,…

Q: Example of negative correlation

A: