a bag contains 3 white and 5 black balls. if two are drawn in replacement.what is the probability that both balls are black

Q: You are the operations manager for an airline and you are considering a higher fare level for passen...

A:

Q: question(3): Anar scored 78 on a test that had a mean of 72 and a standard deviation of 2.7 . O...

A: Given: For Anar Scored (X)=78 Mean = 72 Standard deviation = 2.7   For Omid Scored (X) = 66 Mean = 7...

Q: The average IQ of working women in Bangladesh is suspected to be more than 220, on average. A random...

A:

Q: In a two-way ANOVA, the interpretations of the main effects make sense only when the interaction com...

A:

Q: A survey was conducted of 100 students on which credit cards the students have, Mastercard and/or Vi...

A: Given,P(student has a visa)=0.6P(student has a mastercard)=0.5P(student has both)=0.3

Q: Write the null and alternative hypotheses in words and using symbols for each of the following situa...

A: The random variable X follows binomial distribution. We have to write the null and alternative hypot...

Q: Side effects: A new medical procedure produces side effects in 20% of the patients who receive it. I...

A: We have given that  Success of probability p =20%=0.20 Number of trials n=80 X~binomial (n,p) We nor...

Q: The age distribution of the members of a cer- tain children's club is as follows: Age on last birthd...

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Q: If 100 different students were chosen from this population, we would expect to read less than 97 wor...

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Q: What is probability and why would one want to find the probability of an event that has not occurred...

A: We have to define  Probability and why would one want to find the probability of an event that has n...

Q: binomial(n, p) The probability distribution for a binomial random variable X ~ where n is the number...

A:

Q: t of 500 people sampled, 180 had kids. Based on this, construct a 95% confidence interval for the tr...

A: Given data,n=500x=180construct a 95% confidence interval?

Q: Calculate the arithmetic mean from the following

A: The arithmetic mean is calculated as Mean = ∑f.x/∑f Where is x is mid-point.

Q: find: a) mean time b) median time c) lower quartile among service time d) upper quartile among s...

A: there are 15 costumers that has these data below: 6,9,7,5,15,10,9,7,4,9,10,9,8,6,7   ascending order...

Q: Mean of 100 items is found to be 30. If at the time of calculation two items are wrongly taken as 32...

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Q: There are 18 athletic teams at MVCC.  To determine what programs athletes are majoring in, a researc...

A: Sample is a group of objects which are taken from a large population. There are various methods by w...

Q: Prior to the last election a sample of 500 of the State's voters showed that 300 intended to vote fo...

A: Solution

Q: A normal distribution has a mean of 34 and a standard deviation of 6. Find the probability that a ra...

A: We have given that.   X~N( μ , ?^2 )   μ=34 , ? =6   Z-score =( x - μ )/?

Q: A meat inspector has randomly selected 30 packs of 95% lean beef. The sample resulted in a mean of 9...

A: Given: x=96.2s=0.8α=0.01n=30

Q: You are taking a 20-question true-false test. Your friend takes a 5 question (5 choices per question...

A: Given: sample size (n)= 20 Number of choices per question is given as 5. Out of 5 choices 1 is corre...

Q: The Statistics Games are played by a large number of teams across the county. Teams raise money to c...

A: Given that, The options (A) and (D) are incorrect: (a) z-interval, because we are calculating a con...

Q: Referring to the data, what is the mode of nominal wage? CPI Nominal Wage 537.00 Real Wage Region NC...

A: Given that  Nominal Wage :  537 350 340 360 400 400 320 310 395 386 315 316 365 396 311 320 280 We h...

Q: II. For each of the following variables, indicate whether it is qualitative or quantitative variable...

A: Quantitative data: Data that can be counted or measured, and given a numerical value. Qualitative da...

Q: Test each of the following by performing the steps in hypothesis testing. The time coding an algori...

A:

Q: Determine the area under the standard normal curve that lies to the left of (a) Z= - 0.64, (b) Z = -...

A: Here we have to find the area to the left of z score

Q: What is the mean of the sampling distribution of the means? a. 5.20 14 O b. 4.92 о с 344 O d.4.60 Wh...

A: We have given that  Mean = sum of all observations/total number of observations 

Q: A. Complete the probability distribution table for the random variable R. C form.) R P(R) 1 B. Compu...

A: We have given that 50 COVID patients admitted at a certain hospital; 3 were reinfected twice, 10 wer...

Q: please solve part d The number of customers entering a 24-hour convenience store every 10-minutes c...

A: Given The data is as follows: The no. of customers entering the store every 10 minutes has a Poisson...

Q: The wine company Yellow Tail publishes a report stating that drinking 2 glasses of wine each evening...

A: Given that  The wine company Yellow Tail publishes a report stating that drinking 2 glasses of wine ...

Q: The Commissioner of Jurors obtains a list of all drivers’ license ID numbers in Oneida County, about...

A: Given that, The Commissioner of Jurors obtains a list of all drivers’ license ID numbers in Oneida C...

Q: Jim kept track of how many people attended each Syracuse basketball game last season.  How should he...

A: Quantitative data: The data which can be expressed as numerically is called quantitative data. Categ...

Q: true or false   4. Dependent events do not affect the occurrence of each other   5. A histogram ...

A: We have given that the statements about to the basic probability theory. In which we need to tell th...

Q: 1. Determine the Range, Standard Deviation, and Variance of the height in inches of the 30 basketbal...

A: Here use formula of standard deviation, variance and range

Q: Calculate the arithmetic mean from the following Cata : Value Frequency 0-4 328 5-9 350 10-19 720 20...

A: We have given that the data into grouped frequency distribution. Here we have 8 classes.

Q: Laspeyre's quantity index number for 2005 is : (A) 106.02 (B) 102.82 (C) 112.82 (D) 122.82.

A:

Q: A computer manufacturing company claims that only 7.5% of their computers are returned. Kelly thinks...

A: Givenx=25n=220p^=xn=25220=0.1136α=0.01

Q: State the following (a) Weak Law of Large numbers (b) Bernoulli's Law of Large numbers.

A:

Q: If years of schooling of some given population are distributed with mean 5 and standard deviation 2,...

A: We have given that.   X~N( μ , ?^2 )   μ =5 , ? =2   Z-score =( x - μ )/?

Q: Construct or draw a normal curve using

A: Here use normal distribution table for z score

Q: Center for Health Statistics (NCHS), statisticians Traci Clemons and Marcello Pagano found that the ...

A: Note: Please repost part d as I can author only 3 sub-parts as per my policy Given data,Mean μ=3432s...

Q: Which of the following is the best approximation of the standard deviation of the normal curve shown...

A: which of the following is the best approximation of the standard deviation of the normal curve shown...

Q: A university has two criteria used to set admission standards for freshman to be admitted to a colle...

A: Part a Given that A university has two criteria used to set admission standards for freshman to be a...

Q: 1. A binomial distribution is symmetric at p = 2 and approaches symmetry when n>0 for a fixed p.

A: Please find the solution below. Thank you.

Q: 0.93 2.05 The area of the shaded region is Part 4 of 4 0.98 2.08 The area of the shaded region is

A: The standard normal variable is z, which follows the normal distribution with the mean of 0 and stan...

Q: The song-length of tunes in the Big Hair playlist of a Statistics professor's mp3-player varies from...

A: Given that  the Normal distribution, with a mean song-length of μ=4.25 minutes and a standard deviat...

Q: 13. Given the following information. 2004 Соmmodiry Price 2005 Оиаntity Quant:iy A 10 Price 49 50 B ...

A:

Q: section 6.2, stats/please help with TI-84 calculator The state test scores for 12 randomly selected...

A: We have given data are  1426 1224 990 692 725 835 728 740 544 622 1441 949

Q: true or false 1. The median is the average or central value of a probability distribution.   2. A...

A: 1) The provided statement is false. because the median reflects the middle of a data set when it is ...

Q: In a class of 50 students, 10 have failed and their average of marks is 2 5. The total niarks secure...

A:

Q: In a class of 50 students, 10 have failed and their average of marks is 2 5. The total narks secured...

A: Given: total 50 students 10 failed students average of failed students is 2.5 total marks 281