A researcher has found a strong relationship between level of education and income and concludes that “higher levels of education cause higher income.” What error has been made?

Q: How many possible combinations can be drawn from a population of 16 with sample size of 3?*…

A: We have given that,  How many possible combinations can be drawn from a population of 16 with sample…

Q: The null hypothesis is that 30% people are unemployed in Karachi city. In a sample of 100 people, 45…

A: Given,n=100x=45p^=xnp^=45100=0.45Null hypothesis: H0:P=0.30Alternative hypothesis: H1:P≠0.30

Q: If P(A | B) = 0.3, compute P(A and B).

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A: R sqaured= r^2  Where r correlation coefficient.

Q: ... Calculate the correlation. (Round to three decimal places as needed.) r=

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A: Given : Margin of error, ME = 2.5 population standard deviation, σ = 21.3…

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A: The provided data are ascending order…

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A: Let A be the event that a person has food allergy Given, P (A) = 4% = 0.04. Let B be the event that…

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A: Given X1=215 X2=185 n1=n2=500

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A: Given that the weights for Calculus, chemistry, geometry and discrete mathematics and Physics is 3.…

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A: Required probability is P(L or U)

Q: 6. The following shows the marks from least to greatest for 25 students in a Biology class. 12, 18,…

A: From the provided information  n=25 a.P30=(30*(n+1)100)th observation=(30*(25+1)100)th…

Q: Each month, an American household generates an average of 27.5 pounds of newspaper for garbage or…

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Q: A local radio station claims that 54% of the population who listen to radio broadcast are listening…

A: The provided information is n=250x=97α=0.05p^=xn=67250=0.268 a.The null and alternative hypothesis…

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A: Given: Probability of children have at least one food allergy=0.06 Probability that those having…

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Q: 19. Hospital Noise Levels Noise levels at various area urban hospitals were measured in decibels.…

A: given;sample size(n)=84sample mean(x¯)=61.2 decibelsand population standard deviation(σ)=7.9for…

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Q: f. A sample of 60 Grade 10 students' ages was obtained to estimate the mean lot all Grade 9…

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Q: sample of 50 laptops, the sample mean is 122 minutes. Test this hypothesis with the alternative…

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Q: The table presents gasoline mileage performance for 25 automobiles (Source: Motor Trend, 1975). Y X1…

A: Given Information: Consider the given data: Y X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 18.9 350 165…

Q: Translate the phrase to mathematical expression.  "The sum of the quotient of the reciprocal of x…

A: Solution-: Translate the phrase to mathematical expression. "The sum of the quotient of the…

Q: 1. What is the 90th percentile of a t-distribution when the sample size is 1?

A: According to our policy we can answer only first part for remaining please repost the question.

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Q: Assume that the helium porosity (in percentage) of coal samples taken from any particular seam is…

A: Solution-; Given:  σ=0.75, x¯=4.85, n=33, α=0.05 We want to find, (a) Check the conditions to…

Q: If the two random processes X(t)cand Y(t) have zero mean and are jointly WSS, then lim Rxy (t) = 0

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Q: A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana…

A: Given,n=400x=144p^=xnp^=144400=0.36

Q: d) If U = X + Y and V = Y – X, find i) The Jacobian value of U and V J(U,V)

A: Solution

Q: The measures of center: and Measures of spread: and

A: The measures of centers are mean, median and mode

Q: How many samples are best when dealing with t-test? a. cannot be determined b. exactly 30 c.…

A: We have given that,  How many samples are best when dealing with t-test? Then,  We will find the…

Q: The table presents gasoline mileage performance for 25 automobiles (Source: Motor Trend, 1975). X6…

A: Given Information: Consider the given data: Y X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 18.9 350 165…

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A: Decision Rule: If p-value ≤ α, then the variable is significant Let alpha=0.05. Term P value…

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A: Given data : sample size, n =35 sample mean, x̄ = 23.5 sample standard deviation,s= 4.8…

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A: Given Data : For Sample 1 x̄1 = 12 n1= 20 s1= 4 For Sample 2 x̄2= 8 n2…

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Q: regression was run to determine if there is a relationship between hours of TV watched per day (x)…

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Q: The titanium content in an aircraft-grade alloy is an important determinant of strength. A sample of…

A: Given data are, xi : 8.32, 8.05, 8.93, 8.65, 8.25, 8.46, 8.52, 8.35, 8.36, 8.41, 8.42, 8.30, 8.71,…

Q: A:57 16 27 39 5356 61 80 101 105 B:04 16 21 41 43 57 78 83 90 95 the B is more active True O False O

A: Solution-: A: 5,7,16,27,39,53,56,61,80,101,105 and  B: 0,4,16,21,41,43,57,78,83,90,95 The B is more…

Q: Future scientists: Education professionals refer to science, technology, engineering, and…

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Q: Example 53. In an examination a candidate is required to answer 6 out of 10 questions which are…

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Q: 3 4 2x + /x | dx .

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Q: The value of Kenya shillings visa in US Dollar for the first eight days of August 2018 is given us…

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A: According to our policy we can answer only first three part for remaining please repost the…

Q: Direction: Read, analyze and answer the following problems below. Show all necessary solutions. 1.…

A: From the provided information  x y xy x2 y2 43 128 5504 1849 16384 48 120 5760 2304 14400…

Q: If R„(t) and R„(T) are the autocorrelation functions of X(t) and Y(t) respectively, then the cross…

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