A survey is conducted and the number of people in each household and the amount spent on groceries each week is collected from each respondent. What type of graph would be appropriate to display this data? a) bar graph b) histogram c) dot plot d) scatter plot

Q: Suppose that the heights of adult men in the United States are normally distributed with a mean of…

A: given data,normal distribution μ=69.5σ=3.5proportion of the adults men in united states are at most…

Q: A professor who teaches a large introductory statistics class (197 students) with eight discussion…

A: a) Null Hypothesis: H0: All 8 groups have same mean. Alternative Hypothesis: H1: At least one group…

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A: given data  probability of rain today = 40% in symbol : p(rain today) = 0.40

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A: Concept: Z score= (X-mean)/standard deviation

Q: Interval Frequency 20-26 1 27-33 4 34-40 6 41-47 3 48-54 16 55-61 30 62-68 30

A: The given data is:

Q: 4. Find the interquartile range for the following data: 4, 5, 7, 5, 17, 5, 4, 12, 14, 12, 18, 5

A: Here we have to find out the interquartile range for given data interquartile range = Q3- Q1For…

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A: From given data we have : 30 students who live off campus. 720, 720, 720, 920, 690, 560, 680, 1020,…

Q: Construct the confidence interval for the population mean μ. c=0.95, x=4.8, a=0.6, and n=55 A 95%…

A: Given Mean = 4.8 Sd = 0.6 N = 55

Q: A population of values has a normal distribution with μ=191.3μ=191.3 and σ=79.3σ=79.3. You intend to…

A: Given Population mean μ=191.3, standard deviations σ=79.3, n=239 Let X be the population value…

Q: Express the confidence interval (25.5 %, 42.3 %) in the form of ô ± E. % ± Check Answer

A: Givenconfidence interval is (25.5% , 42.3%)Upper limit = 42.3%Lower limit = 25.5%

Q: sorry can you write it out in pen or pencil please

A: Given that We have to find a ..Mean b..Standard deviation c...Tally Chart

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A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Trees 1 2 3 4 5 6 Frequency 2 5 6 4 1 8

A:

Q: A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He…

A: Givensample size(n)=10Mean(x)=24standard deviation(s)=8Confidence level=90%

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A: Given,Total no.of letters=18

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: given data standard normal distribution x~N(0,1)here we have to find out the p(c≤Z≤-0.56)= 0.2432 we…

Q: 2.4. How many parameters must be estimated?  2.5. Give the fitted response function used to get the…

A: 2.4GivenThe degree of freedom for regression from given output a=6a=k-1,  where k is number of…

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A: given data,n=63x = 11.3s=1.39α=0.01claim :μ >10.9we have to complete hypothesis  testing for…

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A:

Q: with a mean of 50 and a standard deviation of 10 P(x<54)

A: Given that  Mean = M = 50 Standard deviation = SD = 10

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A: x x2 162 26244 164 26896 213 45369 166 27556 89 7921 202 40804…

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A: The following data has been provided: Observed Frequencies: Category Population#1 Population#2…

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A: The anova had 8 observations for each of the three conditions.

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Q: 14. Consider the following set of ungrouped sample data. Answer parts A through D. 4 3 4 4 0 1 2 567…

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A: Introduction: It is required to obtain the residual for the attendance, based on the given…

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A: For the distribution of the IQ scores of individuals, it is interpreted that: μ (mean)=107,  σ…

Q: You wish to test the following claim  at a significance level of α=0.05α=0.05.…

A: Given,H0:μ=85.7Ha:μ&lt;85.7sample size(n)=5mean(x¯)=73.4standard deviation(s)=9.8and α=0.05

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A: Given data:   Peter Alan Sui Before 2077 1751 571 After 1689 1433 464

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A: Given data: This year MONTH(x) DEMAND (y) January 1 4115 February 2 4215 March 3 3915…

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A: Given: X denotes the brain scores of a character X has uniform distribution.

Q: Suppose Z follows the standard normal distribution. Calculate the following probabilities using the…

A:

Q: Suppose that the heights of adult men in the United States are normally distributed with a mean of…

A:

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A: Given information: Cost of the game = $1.25 per game If both heads come up heads, the gambler win…

Q: QUESTION 31 "A population of score is normally distributed and has a mean = 172 with standard…

A: Formula : Z =(X - μ)/σ

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A: Confounding Variable: The link between the two variables under investigation can occasionally be…

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A: Given: Stopping time 3 4 5 8

Q: QUESTION 43 "Calculate the pooled variance for the following samples: Sample 1, n = 22 with a sample…

A: Formula : Pooled variance

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Q: QUESTION 35 "A research article reports a study's result using a t test for independent means as…

A: Given that  Degree of freedom =df =28 Test statistic (t)=4.21 Level of significance =0.01

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A: Given information: Category ObservedFrequency A 23 B 18 C 12 D 14 E 7

Q: If posts are 5 feet apart, how many posts are needed for 45 feet of straight-line fence?

A: Given the information that the posts are spaced 5 feet apart. Since the size of the post was not…

Q: A population consists of value 3. 5. 7 and 9. Take all possible simple random samples of size 2…

A:

Q: A population of values has a normal distribution with μ=88.3 and σ=12.5.You intend to draw a random…

A: Given datanormal distribution  μ=88.3   σ=12.5    n = 121we have to find p12 for sample mean

Q: P(Z<1.89) (less than or equal to)

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

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A: Given that: Number of basketball players, n=7 Required probability: All 7 of them will shoot in an…

Q: Use the confidence level and sample data to find a confidence interval for estimating the population…

A: Given that  n = 105 , Xbar = 441 , s = 40 90% confidence interval

Q: Verify that the following function is a cumulative distribution function. 0 F(x)=0.5 Round your…

A: The question is about cumulative dist. function Given : F ( x ) = { 0  for   x &lt; 1…