4. A city official claims that the proportion of all commuters who are in favor of an expanded public transportation system is 50%. A newspaper conducts a survey to determine whether this proportion is different from 50%. Out of 225 randomly chosen commuters, the survey finds that 90 of them reply yes when asked if they support an expanded public transportation system. Test the official’s claim at α = 0.05.

Q: A particular airline has determined that an average of 18.5 suitcases (#= 18.5) get lost each week b...

A: The probability is 24.4% .   Explanation:-    

Q: ss interval 1-3 3-5

A: Mean deviation about median: Median:

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A: Givenp=0.34n=219Mean(μp^)=p=0.34standard deviation(σp^)=p(1-p)nσp^=0.34(1-0.34)219≅0.0320

Q: Compute standard deviation for the following data : 5, 8, 7, 11, 9, 10, 8, 2, 4, 6.

A:

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A: We have given that.   X~N( μ , ?^2 )   μ =2.21 , ? =0.01   Z-score =( x - μ )/?  

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A: Random Condition In the given case both the sample, for male and female students, was obtained rando...

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Q: Choose the correct pie chart below. O A. OB. Purchases Purchases OC. D. Purchases Purchases Choose t...

A: Given The data is as follows:

Q: Find and provide the solution of the sample mode, and sample variance of the values 8, 10, 4.

A:

Q: A bag contains 5 white and 8 red balls. Two drawings of 3 balls are made such that (a) the balls are...

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Q: The screws to be used on a building construction have an average length of 20 cm with Std Dev of 0.9...

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A: Histogram is a diagrammatic representing of the frequency distribution of a continuous variable. It ...

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A:

Q: Provide an appropriate response. If A, B, C, and D, are the ly possible outcomes of an experiment, f...

A: Solution

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A: Solution: Based  on the given information provided the table ,  the scatter plot and the regression ...

Q: If P (A) = 0.3, P(B) =0.6, and P (Aor B) =0.7 are A and B mutually exclusive?

A: Two events are said to be mutually exclusive when both can not occur simultaneously.  A and B are Mu...

Q: NOTE. For positive integers a and b, you may assume that (а- 1)! (ь — 1)! (а +b—1)! za-1(1 – 2)*-1 d...

A: We are given the probability of getting dice 6 is θ & 1- θ for some other number ,where the rang...

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A:

Q: Classes 10 11 13 6 8 13 9 10 6 13 14 9 7 10 8 12 10 12 10 10 10 8 7 12 12 10 10 12 10 12 11 10 7 12 ...

A: Confidence interval formula:

Q: Dane recently decided to start up a new company offering insurance for people's smartphones. He has ...

A:

Q: 7) What must be the sum of the P(X) in the mean and variance of discrete random con variable? C. 100...

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Q: a) GetFood (a food delivery company) wants to include a game in its' mobile app as a marketing campa...

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Q: Estimate µ, from the following incomplete data : 1 3 4 13 21 37 State the necessary assumption made.

A:

Q: The figure below is known as box-and-whiskers plot.   1. Are the sample distributions symmetrical? ...

A: Given two box-and-whiskers plots.  

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A: Given: Sr. No. ACT GPA 1 24 2.75 2 28 3.25 3 29 3.5 4 35 3.75 5 34 4 6 30 3.8 7 29 ...

Q: Examine whether the Poisson process {X(t)}, given by the probability law e" (At)'/| r, {r= 0, 1, 2, ...

A:

Q: Determine whether the random variable described is discrete or continuous. The time of a randomly ch...

A: The random variable described is continuous.

Q: Sketch a standard normal curve and shade the area that lies to the right of a. - 1.02, b. 0.6, c. 0,...

A:

Q: 5. How many minutes can you run a 3.2km run? Choices (xi) Classmark (P) P(x) x;P(xi) x;?P(x) 0-10 mi...

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Q: How many ways can you arrange the letter from the words PHILIPPINES

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Q: Sketch a standard normal curve and shade the area that lies to the right of a. - 1.03, b. 0.6, c. 0,...

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Q: 2. R(T) is maximum at t= () i.e., \R(t)l < R(0)

A:

Q: Given the joint density function: P, 0<I< 2, 2<y < 4, f(x, y) 10, elsewhere, Find P(1< Y<3|X= 1)

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Q: Find mean deviation of the distribution given below : Persons having said number of accidents No. of...

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A:

Q: MAKE A HISTOGRAM

A: The graph are used for easy understanding of the data set. The histogram is a type of bar graph. It ...

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A: Given,no.of personal computers=342no.of laptop computers=392no.of printers=68Total no.of computers=8...

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A: Given: There are 9 pairs of (x,y). So, n = 5.  

Q: Find mean deviation of the distribution given below :

A: Here Given frequency distribution of number of accidents 

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Q: Construct a 90% confidence interval estimate of the true proportion all months of Febuary that the r...

A: It is given that Sample size n = 35 Number of times rain fell, X = 21 The critical value of Z at 90%...