BE SURE TO ANSWER THE LAST OPEN ENDED QUESTION!! Petra is doing a survey Which of the following descriptions is an example of convenience sampling? A. Petra surveys 4 students in every class in the school. B. Petra surveys every house in her town. C. Petra surveys the 15 players on her hockey team. How could you change the other descriptions to be examples of convenience sampling?

Q: 21. An investor is considering two types of investment. She is quite satisfied that the expected…

A: Given information: n1=7, n2=10s12=225, s22=118

Q: The business college computing center wants to determine the proportion of business students who…

A: Given that: Test statistic, z=2.5

Q: Find the critical value to f

A:

Q: A true-false quiz with 10 questions was given to a statistics class. Following is the probability…

A: Answer:- Given the probability distribution for the score of a randomly chosen student is, X 5 6…

Q: Select all that apply for confidence intervals. CIs show the magnitude of the association of…

A: Confidence intervals are used to estimate the population parameter is likely to lie with a certain…

Q: random variable is normally distributed. It has a mean of 241 and a standard deviation of 17. For a…

A: Given that.   X~N( μ , ?)   μ=241 , ?=17   Z-score =( x - μ )/?

Q: How large does a contingency table need to be for statistical analysis? at least 2 rows, 2 columns…

A: Contigency table: A contigency table is a two-way table in which the columns are classified…

Q: In a random sample of 20 people, the mean commute time to work was 34.9 minutes and the standard…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: Suppose we roll 5 fair dice. Let X be the random variable denoting the sum of the dice, and let Y be…

A: Suppose we roll 5 fair dice. Total outcomes=6^5=7776 Let X be the random variable denoting the sum…

Q: Binary, or Yes/No data are easily summarized numerically with median O proportion sum Opi chart

A: Please find the explanation below.

Q: Refer back to the pizza-delivery Try It exercise. The mean delivery time is 36 minutes and the…

A: Here the given information is  The mean delivery time is 36 minutes and the population standard…

Q: K Assume that females have pulse rates that are normally distributed with a mean of μ = 76.0 beats…

A:

Q: QUESTION 20 The time spent on social media platforms per day by adults has a distribution with a…

A: The given mean is 125 and standard deviation is 16.

Q: random sample of size n 30. Please answer the following questions, and show your answers to 1…

A: Given that.   X~N( μ , ?)   μ=212.5 , ?=93.1   Z-score =( x - μ )/?

Q: A new weight-watching company, Weight Reducers International, advertises that those who join will…

A: Answer  By using the given data:  10 pounds the first two weeks with population standard deviation…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 439 green peas…

A: given data, 439- green peas165- yellow peas604- total peas 95 % Confidence interval for yellow…

Q: Heights of women are normally distributed with a mean of 63.2 in. and a standard deviation of 1.9…

A: We have given information, Let X denote the heights of women are normally distributed. With the…

Q: a) Determine the minimum sample size required to construct a 99% confidence interval for the…

A: Given Standard deviation=0.6 E=0.18 Note: According to the Bartleby guidelines expert solve only one…

Q: A delivery company divides their packages into weight classes. Suppose packages in the…

A: We have given information,  Suppose packages in the 14-to-20-pound class are uniformly distributed.…

Q: Calculate Cohen's d using the following information, � =70, M = 61 and S2=36.

A: Given that, The population mean μ=70 The sample mean M=61 The sample variance S2=36 The formula for…

Q: In general, after a group makes a reservation at a restaurant, they do not show up 20% of the time.…

A: We have given that p = 20% = 0.20n = 8  Here we will use binomial distribution because probability…

Q: 23. In 2003, the student body of a state university in Michigan consists of 30% freshmen, 25%…

A: Given that: Category Observed Frequency Expected proportion Freshmen(A) 138 0.30…

Q: QUESTION 24 A journal article reports that a random sample of 25 antivirus software packages was…

A: 24. The given interval was AED 191,AED 290.

Q: I just want to know if this this correct? The mean gave me this entire number, but it asks for all…

A: The given mean of the variable LOS is 7.5416.

Q: Scores on a statistics final in a large class were normally distributed with a mean of 75 and a…

A:

Q: QUESTION 11 The daily sales of Hi-White toothpaste are believed to be right-skewed. For a random…

A: The sample size is 34, and the standard deviation is 15.36. The given margin of error is 5.88.

Q: QUESTION 20 The time spent on social media platforms per day by adults has a distribution with a…

A: We have given that Mean(µ) = 125Standard deviations (σ) = 16  Here we have Sample size (n) = 16

Q: Approximately 10% of all people are left-handed. Consider 12 randomly selected people. Find the…

A: Let X be the random variable from binomial distribution with probability (p) = 10% = 0.10 and sample…

Q: 4. The SAT scores of the incoming freshmen class are normally distributed with a mean of 1100 and…

A: Obtain the Z-score for the random variable X equals 1250. The Z-score for the random variable X…

Q: Q13What is the correlation between average monthly rainfall and crop yield in a given region over…

A:

Q: griculture). Table 3 shows the yield (in bushels per acre) and the total production (in millions of…

A: Introduction: The dependent variable for the first model is the yield, denoted by Y (x), and that…

Q: Let X be a joint Gaussian random vector X X 2 with mean and covariance tiven by: E[X] = [8] Ex = [1…

A: Let X be a joint Gaussian random vector, X=X1X2 The mean vector, EX=00 The covariance matrix,…

Q: In a small town, there are 3,000 registered voters. An editor of a local newspaper would like to…

A: It is given that: Population proportion, P=0.54 Sample size, n=500

Q: st K Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and…

A: We have given that Mean(µ) = 100Standard deviations (σ) = 15X ~ N (µ, σ )= N(100, 15)

Q: According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15%…

A: From the provided information, 12% of peanuts are red that is p = 0.12 Sample size (n) = 4

Q: Histograms O True O False are considered good graphs AND they are used for Qualitative data.

A: We have the statement  Histogram are considered good graphs and they are used for Qualitative data

Q: m(x)=e^x find m^-1(4)

A: To find the inverse function of m(x), we need to solve for x in terms of m: m(x) = e^x

Q: Please show the following answers to 4 decimal places. b. If a cow is randomly chosen, find the…

A: We have given data,Mean(μ)=32Standard deviation()σ=6.8

Q: What is the chi-squared test statistic for this data set?What is the appropriate degrees of freedom…

A: The data is given on the number of customers during each day. Number of customers (n) = 115 No. of…

Q: Determine the critical value for a left tailed test of a population mean at the a= 0.01 level of…

A: The population mean is μ and the test is left tailed.

Q: A private college in Ohio wishes to determine whether or not students living on campus have similar…

A: Given Information: Resident students: Sample size n1=120 Sample mean x¯1=2.82 Sample standard…

Q: Based on data from the National Health Survey, women between the ages of 18 and 24 have an average…

A: The mean is 114.8 and standard deviation is 13.1.

Q: Refer to the accompanying data display that results from a sample of airport data speeds in Mbps.…

A: Given The data is as follows: The CI is (13.046, 22.15) x¯=17.598Sx=16.01712719n=50

Q: Given the normal distribution represented by X ~ N(81.8, 3.4). Find the 70th percentile to the…

A: Ans#- Given the normal distribution represented by X ~ N(81.8, 3.4).           Find the 70th…

Q: In a study, the data you collect is miles per gallon of cars. Is this data quantitative or…

A: Here the given statement is In a study, the data you collect is miles per gallon of cars. Is this…

Q: so what precentage would be correct for this question   a.16% b.18% c.22% d.20%

A: The mean is 114.8 and standard deviation is 13.1.

Q: The central union of Las Palomas, in Santiago has been involved in a dispute with the Mamoncito…

A: This question examines the dispute between the central union of Las Palomas in Santiago and the…

Q: (d)Assess the regression model's fit

A: Solution: Given information:  n=164 Sample size  k= 8 independent variables  R2=0.294

Q: Perform a Correction t-test. Test if p = 0 at the 10% level of significance using a two-sided test,…

A:

Q: What is the waiting time of a customer in the system?

A: Given that, Arrival rate (λ) = 6 customers per hr Service rate (μ) = 10 customers per hr