From a pack of cards, 2 cards are drawn in succession one after the other. After every draw, the selected card is not replaced. What is the probability that in both the draws you will get spades?

Q: A simple random sample of 49 8th graders at a large suburban middle school indicated that 82% of…

A: From the provided information, Sample size (n) = 49 Sample proportion (p̂) = 0.82 Confidence level =…

Q: There are 26 balls marked with alphabetical order A to Z. What is the of selecting vowels listed…

A:

Q: researcher was interested in the mean corn yeild for farmers in Illinois. She took an SRS of 28…

A: Given that  Margin of error =E =3.5 Population standard deviation =13.25 95% confidence level.

Q: Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given…

A: Note: If the post contains multiple subparts in a question, then only allow to do first 3 sub parts…

Q: Out of first 20 natural numbers, one number is selected at random. The probability that it is either…

A:

Q: A room contains 3 brown, 5 black and 4 white chairs. Two chairs are picked and are put in the lawn.…

A: Given that  Total chairs = 3 + 5 + 4 = 12 Two chairs are picked and put in the lawn

Q: Consider a drug that is used to help prevent blood clots in certain patients. In clinical​ trials,…

A: Given information: Claim: 3% of users develop nausea. Null Hypothesis: H0: p=0.03 Alternative…

Q: In an experiment, college students were given either four quarters or a $1 bill and they could…

A: purchase gum kept the money total student given four quarter 27 18 45 given $ 1 bill 17 32 49…

Q: You’re a human factors engineer examining the reaction time of pilots to two different instrument…

A: Introduction: Denote μ1, μ2 as the true mean reaction time of pilots to instrumental panel layouts A…

Q: The grade appeal process at a university requires that a jury be structured by selecting four…

A: Given,no.of students=13no.of faculty =6Total no.of people=19

Q: A waiter believes the distribution of his tips has a model that is slightly skewed to the right,…

A: Given data: Mean = $9.70 Standard deviation = $4.60 Sample size = 40

Q: Marvin was doing a study comparing the population growth of his hometown in the early twentieth…

A: From the provided second graph, the population for the initial period (i.e., for the year 1980) is…

Q: work!!!! suppose a 70% confidence interval for P is (0.746, 0.854). Which of the following…

A: 70% confidence interval for P is (0.746, 0.854)CI=0.70THE INTERVAL FOR P REPRESENT THE CONFIDENCE…

Q: Example The average number of homes sold by the Acme Realty company is 2 homes per day. What is the…

A:

Q: A joint pdf is described below. A new random variable is formed as shown W = Y+X. Determine an…

A: From the given information, fXYx,y=20171y+x2y, 0<y<3, 0<x<3, y<-x+3⇒x+y<30,…

Q: Suppose we have a bowl with 10 marbles - 2 red marbles, 3 green marbles, and 5 blue marbles. We…

A: Total number of marbles are n= 10  number of green marbles are n(G)= 3 and number of blue marbles…

Q: Researchers were interested in assessing the effects of a new treatment on seasonal affective…

A: Anova is used to test the mean significance between three or more groups. If there exist…

Q: According to the CDC national center for health statistics, about 42.4% of adult Americans fit the…

A: given data, p=0.424n=200np=0.424*200=84.8nq=(1-0.424)*200=115.2 here np and nq≥5so we can assume…

Q: 1. For a random sample of 100 undergraduates, suppose the mean and standard deviation on the SAT…

A: There are two types of error exist in hypothesis testing. They are type 1 and type 2 error.  Type 1…

Q: Suppose a card is drawn randomly from an ordinary deck of playing cards, and then put back in the…

A:

Q: Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given…

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

Q: A group of health conscious researchers were interested in ways to lower blood pressure.  The study…

A: It is given that there are three intervention types on post-treatment blood pressure with each of 30…

Q: 14. You would like to know how effective a diet program is at helping people lose weight. 18…

A: Given that you would like to know how effective a diet program is at helping people lose weight. 18…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: GIVEN DATA,  n=971x=554P^=Xn=554971=0.5705CI=0.99α=1-0.99=0.01we have to find out the confidence…

Q: A poll of 2,198 randomly selected adults showed that 86% of them own cell phones. The technology…

A: given data  n = 198 p^ = 0.86 α = 0.05 we had given technology answer.  using it we have to give…

Q: A recent poll indicates that 48% of all registered voters in America plan to vote for a specific…

A: given data, p=0.48n=12q=1-0.48=0.52p(X=x)=nCx *px*q(n-x) (binomial distribution)x= no. of ragisterd…

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A: given data, we have to find out the given probability for the given data, one order is selected…

Q: se the sample data and confidence level given below to complete parts​ (a) through​ (d).   A drug is…

A: given data, x=118n=4409p^=xn  =1184409   =0.0268CI=0.90

Q: In the past, when elementary school children in a large city were screened, 25% were found to have…

A:

Q: Sketch the area under the standard normal curve over the indicated interval and find the specified…

A: Explanation: The area between Z = 1.44 and Z = 2.11 is = P(1.44 <Z< 2.11) P(1.44 <Z<…

Q: b. Compare the mean of the population to the mean of the sampling distribution of the sample mean.…

A: C. Target        Do       An unbiased estimator.

Q: Find the probability of selecting 2 woman when four persons are choosen at random from a group of 3…

A:

Q: You own an investment which has an arithmetic mean return of 30% and a standard deviation of 15%.…

A:

Q: Suppose the first assumption is replaced with E(u;X;) = 2. What happens to E(Y,IX;)? O A. The slope…

A: Given is a regression model to show relationship b/w two variables X and Y.

Q: Many high school students take the AP tests in different subject areas. In one year, of the 144,154…

A: From the provided information, n1=144154x1=84175n2=219591x2=127895α=0.05

Q: Getting an adequate amount of sleep can improve a variety of physiological functions, and it is…

A: Given data: Sample mean = 6.90 Sample standard deviation = 0.878 Confidence level = 95% Margin of…

Q: 4. A specific type of transistor is known to have a mean time to failure of 10,000 hours. a) What is…

A:

Q: Fifty-four wild bears were anesthetized, and then their weights and chest sizes were measured and…

A: The question is about testing of popl. correlation coefficient Given : Correlation coefficient ( r )…

Q: We define the ratio random variable of two random variables X and Y is Z = . (a) If X~ Binomial (3,)…

A: Given that the ratio random variable of two random variables X and Y is Z=XY.

Q: The story in question 6 uses the concept of ????? A) poison probability distribution  B) bell…

A: The probability density function of a geometric random variable X is given as, P(X=x) = qx-1p ;…

Q: What is the probability of getting a sum 9 from two throws of a dice?

A:

Q: When investigating a question involving a scale dependent variable and a single nominal independent…

A: We need to find which test we will use when we have a scale dependent variable and a single nominal…

Q: Toss a coin twice. Find the probability of getting 1 head. (In this course, I head is taken to mean…

A: If a coin is tossed twice than the possible outcomes areS={HH, HT, TH, TT}T=tailH=head

Q: Suppose we collected a sample and it passes the independence and success-failure conditions. The…

A: Suppose p is the population proportion.

Q: A sociologist sampled 1800 people who work in computer-related jobs and found that 30% of them have…

A: by bartleby policy i can gives only 3 subparts at a time

Q: 10 marbles are numbered 1 through 10 and placed in a bag. A marble is drawn from random bag.…

A: There are 10 marbles. So sample size is n= 10. A marble is drawn randomly. Then probiotics of…

Q: candidate for public office is believed to have the support of 60% of voters. Assume the number of…

A: Let the R.V X denotes the number of people who support the candidate and it follows the binomial…

Q: Mars Inc. claims that they produce M&Ms with the following distributions:   Brown     30%     Red…

A: From the provided information, Sample proportion of blue M&M (p̂) = 0.10 Confidence level = 90%…

Q: A six-sided die is rolled 120 times. Fill in the expected frequency column. Then, conduct a…

A: When tossing a fair die, the probabilities for the face values are,…

Q: Researchers were interested in assessing the effects of a new treatment on seasonal affective…

A: Given data: Subject 0 weeks 2 weeks  4 weeks 1 28 45 69 2 32 43 72 3 30 47 65 4 29 45 75…