You are interested in how many contacts older adults have in their smartphones. Here are data on the number of contacts for a random sample of 30 elderly adults with smartphones in a large city. 7 20 24 25 25 28 28 30 32 35 42 43 44 45 46 47 48 48 50 51 72 75 77 78 79 83 87 88 135 151 Are there any outliers? Enter the boundary for low and high outliers below, then determine if the data set has any outliers. Do not round the boundary values.

Q: Dependent and independent variables used in regression analysis can be interchanged. True False *

A: Regression line Y=aX+b

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A: Let X be the random variable from normal distribution with mean (μ) = 54.4 and standard deviation…

Q: Find z such that 6% of the standard normal curve lies to the right of z. (Round your answer to two…

A: Let Z be the random variable from standard normal distribution with 6% of the standard normal curve…

Q: y of 10 entries in a sales ledger has a mean value of £60 and a standard deviation of £8. What is…

A: given data, n=10x¯=60s=8CI=0.95df=n-1=10-1=9α=1-0.95=0.05

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A: Given that  The brochure indicates that the mean class size for​ full-time faculty is fewer than 33…

Q: 15. Students in a large statistics class were randomly divided into two groups of 20 each. The first…

A: Given Information: Students in a large statistics class were randomly divided into two groups of 20…

Q: ← Scores on the GRE (Graduate Record Examination) are normally distributed with a mean of 599 and a…

A: Given information Population mean μ =599, standard deviations σ=122,

Q: A die is rolled twice. Let X be the number of occurrences of a six, Y the number of occurrences of…

A: If a die is rolled twice, then the sample space is S=i,j:i=1,2,...,6;j=1,2,...,6. The total number…

Q: What is the main advantage of simple random sampling (SRS) over cluster sampling   a. SRS is…

A: Given information: Selecting the correct option is the main advantage of SRS over cluster sampling.…

Q: Consider this equation Average volume of production = 302.23 +3.5(number of employee/s), what is the…

A: Given that  Regression equation  Average volume of production = 302.23 + 3.5(Number of employees)

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A: From given data we have : SUV Car SUV-Car 1721 1274 447…

Q: A student at a four-year college claims that mean enrollment at four-year colleges is higher than at…

A: The following information has been provided: n1=35          n2=35x¯1=5466      x¯2=5068s1=8191…

Q: Varric has conducted a within subjects ANOVA to determine if his band of pirates have significantly…

A: Given information: F(3, 58) = 5.22, p = 0.07 Decision Rule: If p-value ≤ α, then reject the null…

Q: Use the following data set below and a = 0.4 to calculate the simple exponential smoothing forecast…

A:

Q: A random sample of 20 purchases showed the amounts in the table​ (in $). The mean is ​$49.30 and the…

A: Given information Sample size (n) = 20 Sample mean x̅ = 49.30 Standard deviation (s) = 21.86…

Q: This will be involving the rolling of a die. Assume that the die is weighted so that the probability…

A: Given that We are given here that: P(D = 1) = 0.1 P(D = 2) =0.2 P(D = 3) = 0.1 P(D = 4) = 0.1 P(D =…

Q: In a survey, 223 people were asked how much they spent on their child's last birthday gift. The…

A: Given information Sample size (n) = 223 Sample mean x̅ = $43.67 Standard deviation (s) = $15.06…

Q: Mortality follows De Moivre's Law with w = 120. A 10 year temporary annuity due is issued to (90)…

A:

Q: A sample of 20 ordered pairs (x,y) has a value for "r" of r = 0.485 Which of the following…

A: The correlation value r is 0.485.

Q: 2. Compute the test statistic. Complete the following table of expected counts. (Round your answers…

A: Degree of freedom = (Row - 1)*(Column - 1) = (3 - 1)*(2 - 1) = 2

Q: 2. Researchers are interested in the effect of a certain nutrient on the growth rate of plant…

A: Given: Researchers are interested in the effect of a certain nutrient on the growth rate of plant…

Q: The estimated regression equation for these data is y=-15.58 +1.931 +4.732 Here SST = 15,172.9, SSR=…

A: Given that By using excel  Multiple regression  Excel > data> data analysis > regression…

Q: The following are the packaging times from two shipping machines (in seconds per shipment): Machine…

A: The data shows the packing times from two shipping machines.

Q: If there is no significant linear relationship between the two continuous variable, then we cannot…

A: We have given, If there is no significant linear relationship between the two continuous variable,…

Q: Find the z-score that separates a normal distribution into the following two portions. (a) separate…

A: Given that  (a) separate the lowest 80% from the highest 20%(b) separate the lowest 90% from the…

Q: Suppose you were to collect data for the following pair of variables, ski diving: depth, visibility.…

A: Solution:  Explanatory variable : Explanatory variable is the variable which can be manipulated or…

Q: In an experiment to determine the effects of outside temperature on the emissions of diesel trucks,…

A: Given that  Sample size n =10 Level of significance =0.04 NOTE:- According to bartleby guidelines…

Q: The waiting time at a doctor’s office is uniformly distributed with a minimum waiting time of 10…

A:

Q: In regression equation, slope is the amount increases or decreases in the independent for every 1…

A: We have given that,  In regression equation, slope is the amount increases or decreases in the…

Q: The slope is the estimated average value of dependent variable when the independent variable is 0.…

A: Objective of this question is that above statement is TRUE or FALSE.

Q: Use the confusion matrix, calculate the following measures. Actual \ Predict  (Predict) Cancer =…

A: The question is about confusion matrix Given :   To find : Value of accuracy

Q: Suppose we sample 202 homes in Toronto, Ontario and survey their owners on whether they own a lawn…

A: The following information has been provided:   Yes  No Total Yes 80 78 158 No 18 26 44…

Q: A company receives 30% of its shipments from source A and the rest from source B. For source A, the…

A: Given P(A)=0.30 P(B)=0.70

Q: Does it pay to ask for a raise? A national survey of heads of households showed the percentage of…

A: event A: asked for raise event B : receive raise P(A)  = 0.20 P(B|A) = 0.56 P(A∩B) = ?

Q: AAA Inc sells metal sports bottles. The bottles sell for $3.00. Regression for the number of bottles…

A: From the above output, we can see that the regression equation for cost will be  Y= a+bx where…

Q: MLB Batting Averages 0.28 0.458 0.323 0.31 0.295 Find the sample standard deviation of the data…

A: Given that  x x2 0.28 0.0784 0.458 0.2098 0.323 0.1043 0.31 0.0961 0.295 0.087…

Q: Suppose a biologist studying the mechanical limitations of tree growth monitors a national preserve.…

A: Given data is45,80,71,67,45,92,87,67,76,45

Q: Match the variable to its scale of measurement Program: SAT Math Scores: Gender: Final Exam:…

A: Given that Program: SAT Math Scores: Gender: Final Exam: Credits: GPA:

Q: Suppose you roll a special 13-sided die. What is the probability that the number rolled is a "1" OR…

A: Given that  Roll a special 13-sided die Sample size = S = (1,2,3,4,5,6,7,8,9,10,11,12,13)

Q: Use the accompanying table of z-scores and percentiles to find the percentage of data items in a…

A: standard normal distributionZ~N(0,1)Z = -1.8

Q: find the P-value corresponding to the hypothesis that the average SAT score is less than 680.   A.…

A: It is given that  Population mean = 680 Sample mean = 667.4 Population standard deviation = 38…

Q: Questions 9-11 are related to the following To build an interval estimate with a 95% level of…

A:

Q: The box plots below show the distributions of the low and high temperatures for a city over a…

A: The question is about graphical representation Given : From boxplot of low temp. : Min. = 30, Q1 =…

Q: Explain how to find the critical values for a​ t-distribution.

A: It is given that the statement about to find the critical value of t distribution.

Q: of. Torres took her dog Manzy for a walk for 6 days.  These are the number of minutes of each of the…

A: x x2 5 25 25 625 60 3600 25 625 25 625 60 2500 sum =190 sum=8000

Q: The table to the right shows selected ages of licensed drivers in one country and the corresponding…

A: age percentile 75 99 65 90 55 75 45 62 35 36 25 15 20 4

Q: The table to the right shows selected ages of licensed drivers in one country and the corresponding…

A: age percentile 75 98 65 88 55 75 45 58 35 40 25 14 20 4

Q: Use the following data to answer the questions posed below.  This is data taken from a simple random…

A: Hypothesis test is used to compare the sample and population. There are two types of hypothesis…

Q: Acme Toy Company prints baseball cards. The company claims that 30% of the cards are rookies, 60%…

A: Given information: Category Observed frequency Proportion Rookies 25 30% Veterans 110 60%…

Q: You are conducting a study to see if the probability of a true negative on a test for a certain…

A: We have given that The null and alternative hypothesis are H0 : µ = 0.48H1: µ >  0.48 Z = 1.936