Identify the type of statistics researchers used when reporting demographic information such as gender, age, ethnicity, salary and level of education collected during a study? inferential, dichotomous, interpretive or descriptive?

Q: (2) Consider the problem of testing Ha : H > 100 against Ho : µ = 100 at the a = 0.05 level, given…

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Q: A population of 2,800 students from a certain region have normally distributed National Examination…

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Q: 4. A recent study stated that if a person smoked, the average of the number of cigarettes he or she…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 1414 Population Standard Deviation…

Q: , The following salaries (in pesos) were obtained from a sample of 12 executive secretaries: 7,500…

A: Given: n = 12 Data : 7500, 8400, 13000, 5800, 10300, 6300, 10600, 9200, 7600, 7500, 8350, 9466

Q: Oliver queen is able to hit the bull’s-eye 72% of the time if he shoots 24 arrows what is the…

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Q: 26. Assume, for a moment, that the "Daily Exercise" data are normally distributed. Using the mean…

A: We have given that  Mean = 65.192 Standard deviation = 19.716 z = (x - μ)/σ

Q: The number of sick days taken (per month) by 200 factory workers is summarized below. Number of…

A: As per our guidelines we are supposed to answer only one question per post so I am solving first…

Q: What is the probability that when a break-in occurs that the first two alarms systems will go off,…

A: Let us define some events A : first alarm system goes off. B : second alarm system goes off. C :…

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

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Q: What do standard deviation, range, and IQR tell us about a data set? O They tell us how many points…

A: What do standard deviation ,range,and IQR  tell us about a data set  ?

Q: According to the report by the​ government-lending institution, college students who have credit…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 10661066 Population Standard Deviation…

Q: Eagle Outfitters is a chain of stores specializing in outdoor apparel and camping gear. They are…

A: From the provided information, Sample size (n) = 100 From which 13 use the coupons that is x = 13

Q: When purifying drinking water you can use a so-called membrane filtration. In an experiment one…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: 1. Let X~Poisson(a). Show that E[X(X – 1)(X – 2) ... (X – k)] = ak+1 -

A: Solution

Q: t of 4. A parent advisory board for a certain university was concerned about the effect of part-time…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Need answers for questions 14, 19 and 21 only please Correlation and Simple Linear Regression V2…

A: Correlation Correlation analysis is a statistical way to determine the association between two…

Q: 23.15 a barber runs a one-man shop. he does not make appointments but attends customers on a…

A: Given information: As per guidelines we will only answer the first three subparts, please repost…

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

A: For creating a normal distribution, we will require a random number generator. Since nothing is…

Q: There is interest in learning about the number of internet connected devices that people own. You…

A: Survey for the internet connected devices

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

A: It is a 2 stage least squares regression.  Here the predicted value of compulsory defines a…

Q: 1. Let X be a discrete random variable with PGF P(s) Find the probability distribution of X. a. b.…

A: The probability generating function for a discrete random variable is given by Pxs=∑x=0∞PX=xsx. We…

Q: (a) What percent of the parcels weighed between 8 ounces and 20 ounces? (Round your answer to one…

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Q: The median can also be thought of as the O balance point O point of no return O center point O most…

A: The mean, median and mode are single valued measures of central tendency that tries to depict a set…

Q: | The mean annual income of a worker in a certain professional category is 7) $40,000, with a…

A: The random variable annual income follows normal distribution. We have to find the probability that…

Q: d) Notice that to get smaller error and/or higher confidence, you need a larger sample. This result…

A: here use given information , standard deviation  = s = 7.5hour

Q: Teen drivers (those aged 15-19) spend an average of 25 minutes behind the wheel each day. Assume…

A: We have given that,  Average or sample mean (x̄) = 25 , population standard deviation (σ) = 7.6 and…

Q: The mode can also be thought of as the

A: A mode is defined as the number that occurs most repeatedly in data set

Q: A researcher wants to estimate the mean sleeping time of patients with sleep apnea. In a similar…

A: Population standard deviation is 1.9. The z-critical value for 90% confidence interval is 1.645…

Q: Find the area under the standard normal distribution curve to the right of z=-1.25.

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

Q: A sample of 50 provided a sample mean of 19.4. The population standard deviation is 2. (a) Find the…

A: here use given null and alternative hypothesis and basic of hypothesis testing here population…

Q: A "friend" offers you the following "deal". For a $10 fee, you may pick an envelope from a box…

A: Given dataA friend offers you the following dealfor a $10 fee you may pick an envelope from a box…

Q: On the basis of her newly developed technique, a student believes she can reduce the amount of time…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 8484 Sample Standard Deviation (s)(s) =…

Q: 2. The experimenter also performed group comparison to compare specific groups of treatments. Three…

A: The null hypothesis is the ideal case of the experiment and an alternative hypothesis is opposite in…

Q: The taxi and takeoff time for commercial jets is random variable x with a mean of 8.4 minutes and a…

A:

Q: Capsaicin content in red habanero chili (Copsicum ckineosR Jacq.) is affected by the drying process.…

A: An experiment was conducted to determine the effect of using different procured, upon checking,…

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

A: The question is based on hypo. testing of a popl. mean Given : Randomdly selected bulbs ( n ) = 90…

Q: Given a normally distributed population with a mean of 100 and variance 100, find f) P(90 sx s 115)…

A: Disclaimer : “Since you have posted a question with multiple sub-parts, we will solve first three…

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

A: GivenThe test scores of students in an EQ test follow a normal distribution with Mean μ=179Standard…

Q: What is the standard deviation of the following sample data: 16, 15, 41, 28, 20, 34. Round to 2…

A:

Q: The life table below is for a species of lizard. Use it to answer the questions below. It can be…

A:

Q: The number of sick days taken (per month) by 200 factory workers is summarized below. Number of…

A: Number of Days Frequency 0-5 120 6-10 55 11-15 15 16-20 10

Q: recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $640. If…

A: Given that  Median=640 First Quartile=496

Q: Let X1,· , Xn be iid with pdf 1 -(x-01)/02, x > 01, -∞ 0. 02 f(x|01, 02) Show that (Xn – X1)/(X2 –…

A: Given that X1, X2, ...., Xn is iid with PDF, fx|θ1, θ2=1θ2e-x-θ1θ2,   x>θ1 A statistics is…

Q: Consider the following summary output, which was generated from a sample of 8 employees relating age…

A: From the given data R^2 = ? R^2 = 0.019068636

Q: 5) The following data set was obtained in an analysis to determine the weight content of ascorbic…

A: (i) The mean is calculated below. x¯=1n∑x  =15(3.274+3.258+3.265+3.350+3.483)  =16.6305  =3.326…

Q: 3. What percentage of College students have made at least one online purchase in the last three…

A:

Q: If the readings are 23 4 the variance is-----

A: The question is based on descriptive statistics Given data : 2, 3 and 4

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

A:

Q: (a) Let X be the number of times you swim in a given week when you have visited the gym on 4…

A: You go to the ARC gym 4 times a week, each time you visit there is a 0.85 probability that you will…

Q: Q3: The average number of bicycle accidents at on the road is 5 per week. 1- What is the probability…

A: Given that the average number of bicycle accidents at on the road is 5 per week.