There are 7 male and 3 female students. If the professor is picking 2 students at random (assuming the picked student cannot be picked) what is the probability that one is male and the other is female? 7/15 7/30 1/15 8/15

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(-…

A: The question is about std. normal distribution Given : z ~N ( 0, 1 ) P ( -b < z < b ) = 0.9008…

Q: a) Draw a scatter diagram of the data.    Compute the linear correlation coefficient. The linear…

A: The question is about correlation Given :   To find : 1 ) Scatter diagram and value of linear…

Q: Find the grade point average. Assume that the grade point values are 4.0 for an A, 3.0 for a B, and…

A: Given Grade point value for A=4, Grade point value for B=3  Grade point value for C=2

Q: Find the probability of the indicated event if P(E) =.25 and P(F)=.45 Find P(E or F) if P(E and…

A: From the provided information, P (E) = 0.25, P (F) = 0.45 And P (E and F) = 0.20

Q: 6. In how many ways 3 boys and 5 girls be arranged in a row so that all the 5 girls, are together?

A: Solution - total number of boys=3 Total number of girls=5

Q: Consider a t-distribution with 13 degrees of freedom. Find P(t < - 0.81). Question Help: Post to…

A: Givendegrees of freedom(df)=13required probability is P(t&lt;-0.81)

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A:

Q: Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and…

A: GivenThe area under the curve to the left of z is shaded and labeled 0.1922

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A:

Q: What percent of data is less than -8%

A: here we can see that shape of curve is bell shaped and symmetric about x = -6 so it is normal…

Q: A random sample of 8 recent college graduates found that starting salaries for architects in New…

A: According to the given information, we have Sample mean = 42653 Sample standard deviation = 9114…

Q: A population of values has a normal distribution with μ = 145.1 and σ = 60.3. You intend to draw a…

A: Question.2:- according to central limit theorem if sample size is large enough i.e. greater than 30…

Q: For a standard normal distribution, find: P(Z < c) = 0.4251 Find c rounded to two decimal places.

A: given data  standard normal distribution Z~N(0,1) P(Z&lt;C) = 0.4251 C = ?

Q: A client’s orders are growing consistently at x% per year.     A) If three years from now orders…

A: It is related to compound interest : A=P(1+ r/100)n   A = amount after n years  P= principal amount…

Q: A data distribution is given as X ~ U(0, 12). Group of answer choices   What is a?…

A: given dataX~U(0,12)

Q: 4.4 The general manager of a large engineering firm wants to know whether the experience of techni-…

A: Given, Model 1 :  RATING^se=64.2892.422+0.9900.183EXPER   N=50   R2=0.3793 Model 2 :…

Q: Males at Minimum Wage Males below Minimum Wage Females at Minimum Wage Females below Minimum Wage…

A:

Q: A man had a height that is at the 99.725th percentile of the distribution for height. This means…

A: It is given that a man had a height that is at the 99.725th percentile of the distribution for…

Q: A traditional test for extrasensory perception (ESP) involves a set of playing cards, each of which…

A:

Q: 5.17 If X represents the number of people in Exer- cise 5.13 who believe that antidepressants do not…

A: 5.17Givenp=0.70sample size(n)=5Let "x" be no.of people who beleive that antipressants do not cure…

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A: Given data: 39.1, 34.1, 32.4, 43.9, 41.5

Q: Recorded here are the germination times (in days) for 12 randomly chosen seeds of a new type of…

A: Given data is21,18,13,21,16,21,13,19,16,18,18,15sample size(n)=12confidence level=99%

Q: In a distribution where the mean is 70 and the standard deviation is 2, find the Klargest traction…

A: We have given that  Mean(µ) = 70Standard deviations (σ) = 2 Now, let X be random variable X should…

Q: What is the coefficient of determination for Data Set​ B?   Full Data​ Set:    Data Set A Data Set B…

A:

Q: Heights of Volcanoes A random sample of heights (in feet) of active volcanoes in North America,…

A: Given information Population standard deviation, σ = 2385.9 feet Sample size, n = 5

Q: Exhibit 13-21 Source of Variation Between Groups (Treatment) 6,000.0 Within Groups (Error) Total Sum…

A: Solution-: Source of variation SS df Mean Square F Between Groups (Treatment) 6000 5 1200 4.17…

Q: OBFW Publishers Suppose that Jason recently landed job offers at two companies. Company A reports an…

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Q: Calculate the Standard Deviation (s) for the following dataset:  2 3 3 2 3

A: Here n=5 ΣX=13 ΣX2 =35 x̅=ΣX/n =13/5 x̅=2.6

Q: Suppose the probability of winning a blackjack hand is .48. What is the probability that the first…

A:

Q: f X1,X2,...,Xn constitute a random sample of size n from a geometric population, show that Y = X1 +…

A: Given information: Let x1,x2,....,xn  is a random sample of size n from a geometric distribution.…

Q: A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of Rs.392., what…

A: Given that, selling price, SP= Rs.392 gain percent, Gain%= 22.5%   We know that gain percent is…

Q: If 500 persons were sampled, determine the number of persons who are expected to share their…

A: It is given that  p = 55% = 0.55 n = 500

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4 years,…

A: Given that  Mean = M = 4 , Standard deviation = SD = 0.7

Q: Norman earns 6% commission on each baseball uniform he sells. If each uniform cost Rs.90 and he…

A:

Q: Determine the area under the standard normal curve that lies between (a) Z= -0.33 and Z= 0.33, (b)…

A: Answer:- Given, standard normal curve with Find the area under the standard normal curve  (a)…

Q: Question 4 For each of the following time series plots, explain what type of transformation, if any,…

A: A time series is said to be stationary if it does not show any pattern or change in pattern over…

Q: Use the above picture to anwer these questions. If we count off 2.5% of the dots in the LEFT tail,…

A: The provided information is as follows: sample, n=480mean, μ=80.144

Q: a. Complete the table for the Standard Normal Distribution. Region Area (-∞, - 3] 0.0013 0.13% (-3,…

A:

Q: A simple random sample of 35 colleges and universities in the United States has a mean tuition of…

A: given data sample size (n) = 35sample mean(x¯) = 19200sample sd(s) = 10800construct 99% ci for μ.

Q: 3. In a study of the adverse effects of x-rays among children, a retrospective cohort study was done…

A: From the provided information, the following are interpreted: For children, who received an…

Q: The linear correlation between violent crime rate and percentage of the population that has a cell…

A: Given that The linear correlation between violent crime rate and percentage of the population that…

Q: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1989 237.1 221 307.8 51.8 199.9 507.2 194.8 108.1…

A: Given Information: Consider the given dataset:   Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec…

Q: Would observations or interviews be more appropriate to research the following topic? How veterans…

A: Topic :  How veterans find employment after exiting military service  Observations : face…

Q: You are testing the null hypothesis that there is no linear relationship between two variables, X…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: solve all these by hand writing 5. How many different arrangements can be made of all the letters of…

A: "Since you have asked multiple question,we will solve the first question for you.If you want any…

Q: Imagine you are doing a Related-Samples t-test, and you are on Step One of the hypothesis test.  If…

A: The question is about formulation of null hypo. Given : The test is related samples t test The tail…

Q: To say that two variables are confounded means that? Only one answer A) they both vary at the same…

A: Confounding variable: Confounding variable is a third variable that has impact on both dependent and…

Q: Exercise 10. Space Launches The data show the number of U.S. space launches for the 10-year periods…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Assume that a random variable is normally distributed with a mean of 1,200 and a variance of 310.…

A: GivemMean(μ)=1200variance(σ2)=310standard deviation(σ)=310standard deviation(σ)=17.60681686

Q: A sensor is used to monitor the performance of a nuclear reactor. The sensor accurately reflects the…

A: Solution:   Pr (incorrect report)=0.02+0.01                                 =0.03   Pr( Shut down…