7. A manner of collecting data by asking the participants questic indirectly. O A. Questionnaire O B. Interview O C. Registration O D. Survey

Q: Let X and Y be independent exponential random variables with parameters 5 and 10, respectively. Let…

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Q: Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times…

A: Claim : The mean time interval has changed.

Q: Make 1 real-life problem with a solution in any of the following topics; 3. Preforming hypothesis…

A: We have to write a real life problem to perform hypothesis testing for one-sample proportion.

Q: A. Directions: Ilustrate using the normal curve then find the probablity for each statement given…

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Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

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Q: Dropping a piece of buttered toast will theoretically land butter-side down with a probability of…

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Q: o test Ho: o = 4.6 versus H,: o # 4.6, a random sample of size n= 14 is obtained from a population…

A: Given that  Null Hypothesis H0: σ=4.6 Alternative Hypothesis Ha :σ≠4.6 Sample size (n)=14 Sample…

Q: Fred wonders whether the number of commercial space flights in the U.S. is correlated to the…

A: List of formulae : Sample mean of  x : x¯ = ∑xn Sample mean of  y : y¯ = ∑yn Sample standard…

Q: 2. A standard deviation for a population is o = 12.6. A sample of 36 observations selected from this…

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Q: X is a normally distributed variable with a mean of 96 and a standard deviation of 10. Find the…

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Q: Make 1 real-life problem with a solution in any of the following topics; 2. Preforming hypothesis…

A: We need to construct a real life problem and perform the hypothesis testing based on the paired…

Q: The plot to the right shows the probability function of a random variable Z. Estimate the needed…

A: For the given plot Find P ( z >=3 or z =-1 ) = ? P ( z >=3 ) +P(  z =-1 ) = P( z = 3 ) + P( Z…

Q: In a series of studies, Sebastian Deri and his colleagues (2017) asked multiple groups about the…

A: GivenIn a survey Sebastian Deri and his colleagues asked number of friend groups they had and how…

Q: a. Test the claim that the two samples are from populations with the same mean. What are the null…

A: Given: x̅1= 2.35 x̅2=2.67 s1=0.61 s2=0.95 n1=33 n2=30

Q: The numbers 1, 2, 3 and 4 are written separately on four slips of paner The slips are put in a box…

A: Introduction In this question we have to describe the sample space for the experiment from the…

Q: 14. The value that occurs most often in a set of data is called O A. Mean O B. Mode O C. Median O D.…

A: Know that  Mean = sum of all observations/total number of observations.  Median = middle value of…

Q: The following information regarding a dependent variable Y and an independent variable X is…

A: Given Information: Dependent variable=YIndependent variable=XSX=16SY=28n=4S(X-x) (Y-y)=-8S(X-x)2=8…

Q: Find the value of x2 with an area to its right of 0.10 and 15 degrees of freedom. Use Table A.4…

A: Given that, The degrees of freedom is, df = 15 The level of significance is, α=0.10 The type of test…

Q: Assume that when adults with smartphones are randomly selected, 52% use them in meetings or classes.…

A: Given that  Proportion of people use in meetings or classes = 52%  p = 0.52 (1-p) = (1-0.52) = 0.48…

Q: 5. Cellphone number are at what level of measurement? A. Nominal B. Ordinal O C. Interval D. Ratio

A: Cellphone number are at what level of measurement ? Answer : Option ( A ) Nominal

Q: A reporter writing for a national newspaper claimed that representatives of school districts were…

A: Given: A reporter writing for a national newspaper claimed that representatives of school districts…

Q: Make 1 real-life problem with a solution in any of the following topics; 4. Preforming hypothesis…

A: Two sample proportion test is used to determine whether there is difference between two populations…

Q: a. How many genes are involved in producing scales on these fish? ___________________ b. What is…

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Q: Let Y, and Y, have a bivariate normal distribution. The marginal distribution of Y, is normal with…

A: Given Y1 and Y2 are have bivariate normal distribution. Where marginal distribution of Y1 is normal…

Q: Calculate the percentile/decile for the following marks obtained by 9 students:   Xi    45    32…

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Q: The "fill" problem is important in many industries, such as those making cereal, toothpaste, beer,…

A: Given , the distribution of X is N501, σ2 P( X < 500 ) = 0.008 We have to find standard deviation…

Q: 95% confidence interval for a proportion has a lower bound of 0.30 and a margin of error of 0.05. 1.…

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Q: An ordinary (fair) coin is tossed 3 times. Outcomes are thus triples of "heads" (h) and "tails" (t)…

A: For the given data Calculate the probabilities

Q: c)   If the scientists want to estimate the proportion of deer that carry Lyme disease ticks to…

A: We have given that,  Margin of error (E) = 0.02 and confidence level = 90% Then,  We will find the…

Q: 23. A sample of 250 male registered voters showed that 57% of them are in favour of higher taxes on…

A: The question is based on a confidence int. for difference between two popl. prop. Given : Confidence…

Q: 1.5 21 2.5 HS GPA 3 3.5 The histogram is ed right The mean will be Select an anter the median. The…

A: Given that

Q: 0.0021 84.64 What is the mean of the sampling distribution? 0.9982 Find the standard error of the…

A: Solution-: Given: μ=85,σ=2.2,n=64 We want to find, (a) What is mean of the sampling distribution?…

Q: 98.6°F. They measured the temperatures of 56 health standard deviation of 1.1°F. Use the P-value…

A: There are 56 healthy adults; n=56 Sample mean is 98.4 and sample standard deviation is 1.1…

Q: What is the average required by the city council for a student to be scholar? Answer: Are they…

A: Given: Average of Ana is 85 Average of Ben is 97

Q: The average amount of time it takes for couples to further communicate with each other after their…

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Q: 17. An instructor recorded the quiz scores (out of a possible 10 points) for the 12 students present…

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Q: 4. What is the percentage of the patients who recovered in or after 10 days?

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Q: Parts of a Statistical Study: In 2010, the Pew Research Center questioned 1367 adults in the U.S. to…

A: a) The percentage in favor of marijuana use of medical purposes - Variable studied b) Favouring…

Q: Question 6 (For question 6, just write down the answer. No explanation is needed.) (a) Sam and Peter…

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Q: (a) By using the above data, compute the Laspeyres Price Index for year 2018 by using year 2016 as…

A: Laspeyres price index, and Paasche price index are two types of aggregate price indices.

Q: Write the expressions for the following models a. AR(2) b. MA(2) c. ARMA(2,2) d. ARIMA(1,1,1)

A: (a) for an AR(2) process Xt Xt=ϕ1Xt-1+ϕ2Xt-2+Ztwhere Zt is a purely random process with mean 0 and…

Q: Data set 1 has a mean of 49 and standard deviation of 22. Data set 2 has a mean of 27 and a standard…

A: Solution - Given that  For set 1     mean =49 and sd=22 For set 2.    Mean=27 and sd=21 Determine…

Q: C TEST YOURSELF: Construct a cumulative frequency distribution of Statisties Examination Scores of…

A: Given the data   96 69 63 69 70 76 39 82 95 88 57 77 88 43 55 94 73 66 69 98 84 81 82 71 77 90 76 86…

Q: A statistics instructor gave a four-question true-false quiz to his class of 82 students. The…

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Q: In which borough is variation across zip codes in first-dose recipiency rates largest? Brooklyn The…

A: There are different ways to measure the variation for a data set.

Q: 6. It refers to an attribute or characteristic of a population. O A. Statistic O B. Data O C.…

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Q: A video server sends a packet containing a video frame to a user. The packet is received correctly…

A: Given: real-time streaming-only allows up to six such attempts  probability = p

Q: What are the null and alternative hypotheses? O A. Ho: P1 P2 H1:P1 = P2 OC. Ho: P1 #P2 H: P1 = P2…

A: Given: Sample size, n1=204Proportion of leaked virus  of vinyl gloves, p^1=0.56Sample size,…

Q: What is the point estimate, that you should use for determining sample size? Notice this is a pilot…

A: Let’s say that you work for a publication and would like to start your first pilot study. Your boss…

Q: A least squares regression line O always implies a cause and effect relationship between x and y can…

A: A least squares regression line is Y = ax+b If x is known, we can predict y