Belief in UFOs A survey found that 5% of people believe that they have seen a UFO. Choose a sample of 15 people at random. Find the probability of the following. Round intermediate calculations and final answers to at least three decimal places. (a) At least  3 people believe that they have seen a UFO  P(at least 3 people believe that they have seen a UFO) =

Q: Run a regression analysis on the following bivariate set of data with y as the response variable. X…

A: correlation coefficient r=∑(xi-x¯)(yi-y¯)∑(xi-x¯)2∑(yi-y¯)2

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A: It is given that  Mean, μ = 69 Standard deviation, σ = 2.8

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A: Let X is a standard normal variable. It means X~ N(0,1)  Mean = 0 and standard deviation = 1

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A:

Q: Solution: Class Total 15 16 16 17' 18 19 Tally 19 20 20 21 20 21 22 22 23 Class Boundaries 23 23 23…

A: The question is about frequency distribution Given :   To find : To construct frequency table

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A: given box plot for a set of 72 scores; Q1 (first quartile), M (median) and Q3 (third quartile)

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A: given data,normal distributionμ=50σ=12we have to find out the 65th percentile for given data.

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A: GIVEN DATA,n=9μ=50σ=24M=80z score =? 80-

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A: GIVEN DATA P(enjoy sight seening more than other activity) = p = 0.37sample size (n) = 120x = no. of…

Q: Suppose X-N(5,1), find: (a) P(X < 2.5) (b) P(X ≥ 4.6) (c) P(|X| ≥ 3) (A) POLY 512)

A: Given that X~N5,1 a) P(X&lt;2.5): P(X&lt;2.5)=0.0062

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A: Solution: Given information: n=8 Sample size  x=1.99 Sample mean s=0.3 Sample standard deviation…

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A:

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Q: {*** 5x - ) 2 44 1 F(x) = (a) Compute P(X < 0). x < -2 -2≤ x < 2 2≤ x is a continuous rv X with the…

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A: Here we will use the concept of permutations and combinations Formula for Permutation:  nPr =…

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A:

Q: Two samples are taken with the following numbers of successes and sample sizes r1 = 21 r₂ = 40 n₁ =…

A: We have given that r1 = 21, n1 = 73 r2 = 40, n2 = 54 Confidence level (c) = 94% = 0.94 Significance…

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A: given data,p=0.57p^=xn=116183=0.6339α=0.10hypothisis:-H0:p=0.57HA:p&gt;0.57

Q: Let X and Y be two random variables with disjoint PMF of X+Y where X and Y can take the values of 1…

A: F(xy) = (x+y)/12 F(x) = x/12 F(y) = y/12

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A:

Q: Assume that you have a sample of n₁ = 7, with the sample mean X₁ = 44, and a sample standard…

A: The given values are n1=7,X¯1=44,S1=6 and n2=15,X¯2=32,S2=5.

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A: Note: According to Bartleby guidelines expert solve only one question and maximum three subpart of…

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A:

Q: Exercise 7. Ages of the Vice Presidents at the Time of Their Death The ages of the Vice Presidents…

A: Given: 90 83 80 73 70 51 68 79 70 71 72 74 67 54 81 66 62 63…

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A: Given that the linear model equation is, y=mx+b                 .............(I)where y is the…

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A:

Q: C. Using the linear correlation coefficient found in the previous step, determine whether there is…

A: Given that We have to find a... Scatter plot of X and Y  b.. Linear correlation coefficient…

Q: a. What is the probability that a Clean Freek dishwasher will last longer than 11 years? P(X>11) = 0…

A:

Q: Suppose that the probability of passing an exam is 60 percent, so the probability of failing the…

A: given data  P(pass exam) = p =0.60 no. of trials = n = 5 x = no. of students pass exam  P(x=X) =…

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A: given data,n=15 studentsan article reported that 6 in 10 auto accident invollve a signal vehicle to…

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A: X= GPA  Y = starting salary Mx = 81.8 My = 24.2

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A: Givenclaim is that the customer satisfaction rate is different than 54% of company claimsample…

Q: A = {E₂, E4} B = {E₁, E3} C = {E₁1, E4, E5). (a) Find P(A), P(B), and P(C). P(A) = 0.4 P(B) = 0.4…

A: Given that  A={E2,E4} B={E1,E3} C={E1,E4,E5} We want to find  a..P(A), P(B),P(C) b..P(AUB)  c..Ac…

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Q: a bax Three 60=w burks, and Ex randomly selected. a) what is probability that exactly two of the…

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Q: When she was 9 years of age, a girl did a science fair experiment in which she tested professional…

A: given data,n=247 trials x= 105α=0.10p^=xn=105247=0.4251here p=q=0.5

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A: Given that

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A:

Q: Assume that you have a sample of n₁ = 7, with the sample mean X₁ = 44, and a sample standard…

A: From the provided information, n1=7x1=44s1=6n2=15x2=32s2=5

Q: t is the importance of statistics in research?

A: Given that  we have  the importance of statistics in research

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A: Given that the information  sample mean = 105.55 sample standard deviation s = 5.02 To find the…

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A: Given that                   We have to find  Groups means  F statistic value  P value

Q: Use the given data to construct a 80% confidence interval for the population proportion p. x = 55, n…

A: given data x = 55n = 7080% ci for p =?