Statistics Question

Q: Zoologists studied the characteristics of the burrow systems of a subterranean rodent. A sample of 5...

A: we have to find 90% confidence interval in the given data n = 51 sum of data = 764.1 therefore mean ...

Q: 5.- Let X be a discrete random variable that takes the values 1, 2 and 3 with probabilities , y, res...

A: We have the computations for population mean and variance as, X P(x=x) XP(X=x) X^2P(X=x) ...

Q: The Stem and Leaf output that corresponds to a set of test scores is as follows:  Stem-and-leaf of ...

A: Given information: The provided stem and leaf output for a set of test scores is as follows: 6      ...

Q: A researcher found that a cigarette smoker smokes on average 31 cigarettes a day. She feels that thi...

A: Given, Population Mean = μ = 31 Sample size = n = 10 Sample mean = x = 28 Sample standard deviation ...

Q: Twenty-five randomly selected students were asked the number of movies they watched the previous wee...

A: Given Information : Twenty-five randomly selected students were asked the number of movies they wat...

Q: In this example, Ha is the mean value of the differences d for the population of all pairs of data, ...

A: 6th  (X) 13 th (Y) D =X-Y (D-Dbar)^2 6 12 -6 1.96 10 13 -3 2.56 9 15 -6 1.96 5 10 -5 0.16 ...

Q: Answer the following questions given the parallel box plots. Which grade has the largest IQR? HGrade...

A: Given box plot for grade 10 and 11 is  

Q: If A denotes some event, what does A denote? If P(A) = 0.004, what is the value of P(A)? What does A...

A: Given,  P(A) = 0.004  

Q: The amounts of time per workout an athlete uses a stairclimber are normally​ distributed, with a mea...

A: (a) Given: μ=25, σ=7 The corresponding z-value needed to be computed:  The probability that a rando...

Q: Which is more affected by extreme observations, the mean or median? And how about the standard devia...

A: As median and IQR are not affected by the outliers, options (b), (c) and (d) are considered as incor...

Q: A survey was conducted to determine the distribution of home sizes in the state of Washington. The d...

A: The homes that were surveyed larger than 4000 square feet come under the interval of 4000-5000 feet,...

Q: cocaine-induced excited delirium and a sample of those who had died from a cocaine overdose without ...

A:   Excited Delirium 0 0 0 0 0.1 0.1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.6 0.7 0.7 0.7 1.0 1.5 2.7 ...

Q: 1. Pharmaceutical firms also conduct research to assess the efficiency of a treatment program. Suppo...

A: A new drug anti viral drug for COVID-19 is given to patients who have evident signs of this disease....

Q: Calculate the degrees of freedom associated with a small-sample test of hypothesis for (41 – #2), as...

A: Provided data is, small sample test of hypothesis is performed for (µ1- µ2) it assumed that variance...

Q: Thirty randomly surveyed individuals stated the approximate distance (inmiles) between their homes a...

A: A histogram is a graphical representation of data which gives details about the values in sample and...

Q: Starting salaries   Average salaries South Dakota 26,111 South Dakota 34,709 North Dakot...

A: Range = Maximum observation-minimum observation Here maximum observation = 31298 Minimum Observation...

Q: A consumer product magazine recently ran a story concerning the increasing prices of digital cameras...

A: Critical value: It is the cut-off point that separates the rejection and the acceptance region. It i...

Q: Citrus Rental is a popular car rental agency that has a history of having too few cars available, so...

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any ...

Q: 11. The null and alternative hypotheses For each pair of hypotheses that follows, decide whethe...

A: The null hypothesis should always be a simple hypothesis. That means it should not be compound hypot...

Q: fCx.y)-kxy",0<x<y<2 :0, e.w. a. Find the constant k. b. Find E(XY) c. Show that X and Y are not inde...

A:

Q: An instructor asked a random sample of eight students to record their study times at the beginning o...

A: From given data, X Y X*Y X*X 12 93 1116 144 14 84 1176 196 11 81 891 121 19 72 1368 361 ...

Q: 0             5           1             0     5      7     7           2             3     4      9 ...

A: Given, The stem and leaf are 05,10,15,17,17,23,24,29,34,39.

Q: Please see attached screenshot for homework question, thanks!

A:

Q: I hope you can help me

A: If two balls are selected with replacement, then there can be 3 possible value of random variable Y:...

Q: Common (combined) probability density function of Y1 and Y2 get it shaped like the picture. The valu...

A:

Q: The histogram to the right represents the weights (in pounds) of members of a certain high-school pr...

A: From the given Histogram   Mid-point  Frequency 115 4 125 2 135 2 145 3 155 3 165 1 ...

Q: An individual wants to deposit $113000 into two investment accounts. One account pays 6% annual retu...

A:

Q: Express the 90% confidence interval 0.3333&lt;p&lt;0.5555in the form p±E.

A: Given Data: 90% Confidence Interval: (0.3333, 0.5555) Upper confidence level=0.5555 Lower confidence...

Q: Please provide right answers for the wronged parts of this questions.

A: a) From the given information, μ^=49.7μ0=50σ=3.8n=33 Test statistic: z=μ^-μ0σn =49.7-503.833 =-0.453...

Q: Plzzz explain a, b, c question compulsoury. Then i will rate you. Ty

A: The number of standard deviation 29 inchs far away from the mean is: Thus, 29 inches is 5 standard ...

Q: A mean undergraduate cost for tuition , fees , room , and board for four-year institutions was 26,48...

A: From the provided information, Mean (µ) = 26489 Standard deviation (σ) = 3204 Let X be a random vari...

Q: What is the range of this data set? range = What is the standard deviation of this data set? (Rememb...

A: a) Data(X) 81.3 107.9 98.8 87.3 115.7 95.4 115.7 77.7 115.7 94.4

Q: What is the critical value for a right-tailed t test when a=0.025 and  n=13?

A: Given,n=13α=0.025df=n-1=12tc=?

Q: The follow table gives the approximate economic value associated with various levels of oil recovery...

A: 20. Step-by-step procedure to obtain Regression line  using Excel: In Excel sheet, enter and select...

Q: One weekend, a statistician notices that some of the cars in his neighborhood are very clean and oth...

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want solution...

Q: This data is from a sample. Calculate the mean, standard deviation, and coefficient of variation. Su...

A:   47.1   42.2   26.3   39.7   22.1   29   35.5   30.2     MEAN  34.0125 VAR 73.4...

Q: The l-distribution. Prove that if X and Y are independently distributed, X having the distribution N...

A: X~N0,1Y~χ2m m is the degrees of freedom X and Y are independent. fx=12πe-x22fy=12m2gammam2e-y2ym2-1

Q: ACTIVITY 17 Compare the standard deviations and means of the following pairs of normal curves. Legen...

A: As curves with higher peaks can be interpreted of having smaller standard deviations, as more data p...

Q: Suppose that 67% of people own dogs. If you pick two people at random, what is the probability that ...

A: Solution: 10. Let X be the number of people own a dog. From the given information, probability that ...

Q: A counselor wants to know if a popular new hypnosis technique impacts depression. The counselor coll...

A: Given : n = 23 x¯ = 56.36 μ = 51 σ2 = 10.89 α = 0.10 a) Z test for One Population Mean b) Population...

Q: Given the function  k(t) = 2t − 1,  complete the following. (a) Evaluate k(2).(b) Solve  k(t) = 5. ...

A: Given, k(t) = 2t − 1  

Q: Figure 4.27 lists the results of a student survey pertaining to favorite ethnic foods. Construct a p...

A: Given - The Given information to provide a student survey pertaining to fevorite ethnic foods  In Ex...

Q: 7. The sample mean estimator for the population mean a. has a small standard error b. potentially ha...

A:  The sample mean is used as an estimator for the population mean, the average value in the entire po...

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of ...

A: claim for the test is the actuaries of the company claim that the variance of the number of accident...

Q: Statistics Question

A: Dear Student, We are allowed to solve only the first three parts. Kindly ask the remaining part sepa...

Q: Find the area under the standard normal distribution curve between z = 0 and z= 1.37. Use The Standa...

A: The values given are z=0 and z=1.37 Using distribution tables, ϕ0=0.5ϕ1.37=0.91466 ϕz represents the...

Q: Classify the variables as independent or dependent. 1. your grade in math and your test scores b Ind...

A: Independent Variable: The variables that are not depending on any other variables that are to be pre...

Q: European unemployment has been relatively high in recent years. The following table contains the per...

A: Enter the given data in R as follows:

Q: With a valid detailed explanation give the correct answer out of the three.

A: the correct answer is B  

Q: If a board has 5 women and 4 men. How many ways can you form a committee containing 3 members such t...

A: Given that a board has 5 women and 4 men. Now we want to form a committee containing 3 members such ...