Finding the sample size: Polls are to be conducted in two cities to determine the difference in the proportions of residents who believe that the economy will improve over the next year. A 95% confidence interval will be constructed for the difference between the proportions. If the sample sizes are to be equal in the two cities, how large should each sample be so that the margin of error will be no more than 0.12? Round up your answer to the nearest whole number. Each sample should contain a minimum of residents. X 5

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A: According to the given information, we know that, Sample size, n = 12 Probability, p = 0.9

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Q: Letters Frequency Relative Fri Lower Bound Upper Bound Q 5 Z X J 0.000212 2.63984E-05 0.000398 6…

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A: Solution: k= 5 Categories n= 188 + 186+ 97 + 68+ 366 = 905 Sample size

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Q: be Liung Box C

A: AIC - Akaike Information criteria BIC - Bayesian Information Criteria Hannan Quinn statistic Ljung…

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A: We have given that,  Confidence interval = 90% and Margin of error (E) = 3% = 0.03 Then,  We will…

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A: Given that : A data set { 0,0,1,4,5 } We use here mode concept to solve this.

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Q: Refer to Exhibit 1. The mean square between treatments is O 16350 8750 O 475 O 2916.67

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Q: Apply the rejection rule using the critical value approach

A: Given: x¯1=42.5x¯2=22.3s12=48.7s22=20.5n1=10n2=12 Degree of freedom  df= 15 (given) Level of…

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A: We have given thatn = 370p̂ = 0.76p = 0.70α = 0.05

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Q: Identify the type of correlation from the graph. 12- 10 0 . 2 6 Positive correlation Negative…

A: Solution-: We identify the type of correlation from the given graph:

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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

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Q: If you go through the profiles of 200 people in a population where you expect 25% of the population…

A: here define events , dateable  = D swipe Right  = R  swipe left = L   here p(R | D) = 0.80  p(L |…

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A: here given,  here fair coin tossed 8 times  p = probability of head  = 0.5

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A: Solution

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Q: Two machines used to fill soft drink containers are being compared. The number of containers filled…

A: Given Information: For machine 1:    x¯1=69.2, s¯1=2.1 , n1=26 For machine 2:   x¯2=68.5, s¯2=3.1 ,…

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Q: Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were…

A: It is given that sample size (n) is 1000 and x is 470.

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A: Solution-: We want to find the relationship between two variables in the given graph.

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Q: (a) Set up the null and alternative hypotheses for deciding whether more than half of American…

A: Z statistics for one proportion use to test the proportion

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Q: The following items represent the number of birds observed at a given feeder over the past several…

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Q: The table contains data on the admission price (in dollars) for one-day tickets to 10 theme parks in…

A: Data given  55,61,42,44,28,48,64,44,40,42

Q: 7 6 5 7. 6. S 4 2- 1- Y Tip (5) ● 4 8 12 116 20 Meal Cost (5) 12 16 20 Meal Cost (5) Meal Cost ($)…

A: Drawing a line through the scatter plot

Q: What kind of metrics are the What does the Ljung Box Q

A: SIC (Schwarz information criterion, aka Bayesian information criterion BIC) AIC (Akaike information…

Q: C. Solve the following problems. 11. In a group presentation, the average geometric reasoning of…

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Q: OA: 0.06 OB: 0.04 OC: 0.09 OD: 0.02 OE: 0.03 According to a recent poll 57% of Americans would vote…

A: We have given thatn = 100x = 68p̂ = x/n = 68/100 = 0.68p = 0.57

Q: Since the 2-score in freestyle is [Select] score in backstroke, his time in freestyle when compared…

A: here use z-score  z = x- μσ

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A: P value=0.0001

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A: Expected value is provide the mean value of the distribution. It is calculated by the combined value…

Q: . The null hypothesis Ho in a two-way table represents which of the following? A) There is no…

A: In this case, we need to identify the null hypothesis.