There are 6 green apples and 7 red apples in a basket.   (a) What is the ratio of red apples to all apples in the basket?     (b) What is the ratio of green apples to all apples in the basket

Q: Out of 600 people sampled, 552 preferred Candidate A. Based on this, estimate what proportion of the…

A: Sample size is n= 600 and 552 preferred candidate A.  So X= 552 p^ = X/n  = 552/600 = 0.92

Q: The mean and standard deviation for the final exam in Dr. Fudd's class were as follows: mean = 86…

A: Concept: Z is known as standard normal variable Z= (X-mean)/standard deviation

Q: In a reality program show, it has been studied that Mawi’s winning votes are according to a Poisson…

A: Given that in a reality program show, Mawi’s and Siti's winning votes follows Poisson distribution…

Q: The recidivism rate for convicted sex offenders is 11%. A warden suspects that this percent is…

A:

Q: 25. Where do you live? The U.S. Census Bureau computed the proportion of U.S. residents who lived in…

A:

Q: Confounding occurs when” A. the confounding variable is related to none of the other variables. B.…

A: Confounding: When the primary exposure of interest is mixed up with another factor that is linked to…

Q: What does the result​ suggest?     A. The result suggests the event did not occur.   B. The result…

A: From given data: Mean μ=268, standard deviation σ=15

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A: Regression line are used to predict the future value. It has two variables, they are independent and…

Q: A company that makes cola drinks states that the mean caffeine content per 12-ounce bottle of cola…

A: The hypothesized mean is 45.

Q: According to a securities commission officer, the use of insider knowledge has benefited 65 percent…

A:

Q: Before changes to its management staff, an automobile assembly line operation had a scheduled mean…

A: Given ,  Sample size = n = 24 Sample mean = x¯ = 12.6 minutes  Population mean = μ = 13.4 minutes…

Q: The p-value for a two-sided test is always _______  for a one-sided test.

A: The P-value for a two-tailed test is always two times the P-value for either of the one-tailed…

Q: Each observation in a random sample of 101 bicycle accidents resulting in death was classified…

A: Given: n = 101 α = 0.05 Formula Used: Test-statistic χ2 = ∑(O-E)2E

Q: 1) Let the probability function of a discrete random variable X be >= {(²9) f(x) = (0.5)*(0.5)16-x,…

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Q: relatively stable, without trend, seasonal, or cyc simple moving average value of k is set at 2.…

A: Given,

Q: Based on the data shown below, calculate the regression line (each value to at least two decimal…

A: X Y X.Y X2 4 12.5 50 16 5 10.7 53.5 25 6 11 66 36 7 12.7 88.9 49 8 12.5 100 64 9 16.9…

Q: Construct a 95% confidence interval for your answer. The 95% confidence interval for the number of…

A:

Q: If you plan to test if there is a difference in the blood pressure for men and women, answer the…

A: The following table shows the systolic blood pressure of 5 women and 5 men.   Women 110 120…

Q: If the proportion of Mastercard transactions in a sample of various credit card transactions is…

A: Probability: Probability is the ratio of favourable outcomes to all other potential outcomes of an…

Q: lower limit and upper limit of the 90% confidence interval. nal places (If necessary, consult a list…

A:

Q: 4) Let X₁, X₂, X, be mutually independent and identically distributed continuous random variables…

A:

Q: he Indian River County Economic Development Board needs to estimate the proportion of all county…

A: The Indian River County Economic Development Board found that 28.7% of all county residents held at…

Q: hypotheses?     A. H0​: The variable x is dependent upon y. Ha​: The variable y is dependent upon x.…

A: Answers and calculation given in the steps below  Thanks!

Q: An automatic machine in a manufacturing process is operating properly if the lengths of an important…

A: Given info: An automatic machine in a manufacturing process is operating properly if the lengths of…

Q: The following data were obtained in an experiment to investigate whether compressive strength of…

A: capping material batch value 1 1 1847 1 2 1942 1 3 1935 1 4 1891 1 5 1795 2 1 1779 2 2…

Q: you specify the answe

A: Given: Population mean of normal distribution = 700 Population standard deviation of normal…

Q: Number of Alarms 32

A: Given,

Q: Find the standard deviation for the group of data items  8,9,10,11,12

A: We have given the following data  8,9,10,11,12 And we have to find out standard deviation.

Q: high school baseball player has a 0.147 batting average. In one game, he gets 9 at bats. What is the…

A:

Q: Given the following data, found the diameter that represents the 53rd percentile.

A: Given data is1.64,1.59,1.30,1.51,1.41,1.64,1.59,1.47,1.61,1.68,1.56,1.32,1.64,1.41,1.49sample…

Q: The regression equation is y=+x. (Round to one decimal place as needed.) Given that the systolic…

A: from given date first find mean; Mean of X =MX=∑Xn=4555=91 Mean of Y =MY=∑Xn=7775=155.4

Q: been feeding bass in a pond. Based on a large number of observations, the distribution of bass…

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Q: Perform a chi-square independence test, provided the conditions for using the test are met.…

A: Given that,  Claim : Depression and BMD in elderly men are statistically dependent.

Q: A PhD student in the sociology department tries to construct a 99% confidence interval for the…

A: The question is about sample size estimation Given : Confidence level = 0.99 Margin of error ( E ) =…

Q: A continuous random variable X is uniformly distributed with 0≤X≤20. ​(a) Draw a graph of the…

A: Given,A random variable X~U(0 , 20)f(x)=120   ;    0≤X≤20

Q: Tire wear: An automobile manufacturer wants to compare the lifetimes of two brands of tires. She…

A: From the provided information, Sample size (n) = 7 Level of significance (α) = 0.01 The difference…

Q: I want to know what percent of these coffee shops sell espresso. Out of the 150 I sampled, only 40…

A: Given sample size(n)=150x=40confidence level=90%

Q: Construct a 99​% confidence interval of the population proportion using the given information.…

A:

Q: Common Sense Media surveyed 1000 teens and 1000 parents of teens to learn about how teens are using…

A: Solution: Given information: n1=1000 Sample size of teensn2=1000 Sample size of parents x1= 279…

Q: The expected value without sample information is 10. The expected value with perfect information is…

A: Given data The expected value without sample information is 10 The expected value with perfect…

Q: Here is the dataset containing plant growth measurements, e of plants grown in solutions of…

A: Given information: Distilled H2O Petro NACl MgCl NaCl + MgCl 20 19.84 20 19.88 19.93 19.95…

Q: The owner of a chain of mini-markets wants to compare the sales performance of two of her stores,…

A: (a) Hypotheses: H0:μd=0H1:μd≠0

Q: A regression was run to determine if there is a relationship between hours of TV watched per day (x)…

A: Answer and explanation given in steps below  Thanks!

Q: You have been asked to select at least 3 out of 7 possible sites for oil exploration. Designate each…

A: Given data you have been asked to select at least 3 out of 7 possible sites for oil exploration.

Q: Which distribution does a test for independence use?   Group of answer choices z-dsitribution χ2…

A: To assess whether two factors are independent or not, you can apply the test of independence that…

Q: The data summarized in the accompanying table is from a paper. Suppose that the data resulted from…

A: Solution: The observed frequency table is    Usually eat 3 meals per day  Rarely Eat 3 meals per…

Q: Hi, Could you please help me understand why we are looking at 0.975 for 95%? Shouldn't 0.975 be for…

A: The z score is used to determine the probability of the normal distribution. It is calculated by the…

Q: separating all students by grade level, and selecting 10 students from each grade  number every name…

A: Given data  separating all students by grade level, and selecting 10 students from each grade…

Q: In a recent year, the scores for the reading portion of a test were normally distributed, with a…

A: It is given that the mean is 20.1 and the standard deviation is 5.2.

Q: Suppose a population that has mean 90 and standard deviation 20. How many observations, n, should…

A: