If P(An B) = 0.2 and P(B) = 0.8, what is P(A | B)?

Q: Last week Sarah had exams in math and in Spanish. On the math exam, the mean was u = 4 with o = 5,…

A: Given that the math exam with mean was is μ=40 and σ=5. And Sarah had a score of X=45. Z score for…

Q: A biologist claims that nearly 45 percent of all Americans have brown eyes. A random sample of…

A:

Q: A family decides to have children until it has three childrenof the same gender. Assuming P(B) 5…

A: From the given information,  A family decides to have children until it has three children of the…

Q: In our Brockport sample of college students, the greatest number of weekend drinks observed was 6.00…

A: Z score for 6 weekend drinks is,

Q: A researcher rejected the null where r(146) = .148, p = .03 and concluded that the effect size was

A: Reviewing information, Given that, r=0.148p=0.03

Q: Here are several z-scores.  Which person was closest to average? Ahab: Z = +1.2 Brianna: Z = -0.8…

A: Given z scores: Ahab: Z = +1.2 Brianna: Z = -0.8 Cecilia: Z = -1.4 Darnell: Z = +0.7 Evelyn: Z =…

Q: What is the z-score of x, when x = 11 and X ~ N(8,1)? (round to nearest hundredth) If your answer…

A: Introduction: Consider X as a normally distributed random variable, with mean μ and standard…

Q: 4. Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was p = 40 with o =…

A:

Q: Dorothy Little purchased a mailing list of 2,000 names and addresses for her mail order business,…

A: From the provided information, the probability that the names list is non authentic, is 40%. That is…

Q: the claim is that for a smartphone carriers data speeds at airports, the mean is 14.00Mbps. the…

A:

Q: eart attack or stroke within one year, and of the ticagrelor patients, 565 suffered a heart attack…

A:

Q: Larry is a 62% free-throw shooter, that is to say that anytime Larry attempts a free-throw, there is…

A: Given data, p=62% =0.62 n=70   Mean=?

Q: Suppose you are given a binomial experiment with: P (I = 2) = 625 %3D P(x = 3) = 625 216 What is the…

A: P(x=-2) is 0.6

Q: What is the range of Joey’s first 14 quiz grades? What is the range of Joey’s quiz grades after his…

A: a) Range of first 14 quiz Lowest value=74 Highest value=98   Range=Highest value-Lowest Value…

Q: What is the of the mean 0. P(X=x) 0.15 0.20 0.15 0.50 3.

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Q: The smaller a p-value is, the stronger it is against H.. O True O False

A: p value is the probability value which one is calculated under the test statistic.

Q: A sample of 425 voters aged 18 – 25 were asked whether they thought Social Security benefits should…

A: Given information- Significance level, α = 0.05 Let, p1 = proportion of voters aged 18 – 25 were…

Q: If: y = ax² + bx³ where a = 13 and b = 5, find the mean value of y for X between 1 and 3

A: Given :y=ax2+bx3a=13 and b=5

Q: What is wrong if you conduct a study and you calculated r=-3.0,then what?

A: If we conduct a study and got the correlation coefficient value (r) = -3.0

Q: If P(X > a) = –, then a is equal to: 16'

A: Here given pdf from which retrieve probability

Q: you have two results for p= technically which one is the correct reference?

A: We have to find the value of p.

Q: An unfair coin with heads 6 times as likely as tails is flipped four times. If X is the number of…

A: In this case, if the coin is tossed 4 times then the head occurs 6 times as likely as tails.

Q: If p (a) = 0.999 what is the value of p(a)

A: From the given information, P(A)=0.999. Then, the value of complement of A is

Q: To the nearest tenth, what is p′(b) if p(x)=  0.6e x / In(x) and b=5?

A: We have been given a function and we need to approximate the value of its derivative at x = 5

Q: Given x = 0, 1, 2, 3, 4, 5 how is the mean 1.5? Shouldn't the mean of x be 2.5?

A: Measures of Central Tendency: A measure of central tendency represents the central value or typical…

Q: If r = .80, then __% of the variance in the scores of one variable is associated with the variance…

A: It is given that the correlation coefficient r is 0.80.

Q: A Company is planning a Children’s Christmas party for their 750 employees. Base on the survey…

A: This problem solve by property of set's . The solution of the problem in the next page .

Q: 9. Would it be unusual for a game to have 25 points scored? Justify your answer in terms of the…

A: From the provided information, Sample size (n) = 10

Q: Last week Andi had exams in Chemistry and in Spanish. On the chemistry exam, the mean was u = 30…

A: To solve the above question, we use the z score formula Andy took two Exams, Chemistry and Spanish.…

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: Given,n=1908x=439p^=xnp^=4391908=0.2301

Q: The trunk diameter, in centimeters, of a certain variety of pine tree is represented by X~N(150,…

A: We have to find out the z-score for a tree with a diameter of 170 centimeter..

Q: If the test result is significant at 5% level, it must also be significant at 1% level. True O False

A: Given : Significance level , α = 0.05

Q: For the scores in the following table, what is the value of ΣX2? X    f 4     1 3     2 2     1…

A:

Q: Does ¬q ^ (p → q) imply ¬p?

A: Here we have to find Are  ~q ^ (p -> q)  and ~ p equivalent.

Q: Genesis wants to invest his money in a fast food restaurant. There is a 38% chance of losing…

A: The percentage of losing of 40000 is 38%. The percentage of profit of 550000 is 30% The percentage…

Q: In an experiment with three conditions, the means are 2, 4, and 9. What would be the value of L for…

A:

Q: Suppose that P(A|B)=0.4 and P(B)=0.5. What is P(A B)?

A: Note: As per our company guidelines, we are supposed to answer only the first question. Kindly…

Q: What is the value of z Cx-2) to the Scores s 2,3,5?

A: Given data(Scores); x x-2 (x-2)2 2 0 0 3 1 1 5 3 9 Find ∑(x-2)2=?

Q: p-value of the test is

A: Given- Sample size (n)=10 Sample mean (x)=27 Sample standard deviation =5.5 Population standard…

Q: If a you had two groups in a study Group 1 had a n=25 and Group 2 had a n=21, what would the df be…

A: Given that n1 = 25 and n2 =21.

Q: If P(A) = 0.431, what is the value of P(A)?

A: Given :  P(A)  = 0.431

Q: Asians and Hispanics. At a=0.05, can you reject the claim that the proportion of newlywed Asians who…

A: Answer is explained below

Q: In a one-tail test, the p-value is found to be equal to 0.0026. If the test had been two-tailed, the…

A: Here use basic concepts of p value

Q: Illustrate the problem with doing t tests among all pairs of means?

A:

Q: A student does a survey to see if the average GPAs of male and female undergraduates at her…

A: We have given that  the average GPAs of male and female undergraduates at her university are…

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35…

A: The z-test determines the claim about one population proportion.

Q: And determine the p-value on both questions

A: From provided information, it is claimed that mean lead concentration is for medicine is less than…

Q: Suppose X~B(n,p) and E(X)=20,Var(X)=12, Can you find n=_ _p=_______?

A: