What is the probability of rolling a sum of 12 on a standard pair of six-sided dice? Express your answer as a fraction or a decimal number rounded to three decimal places, if necessary. Answer How to enter your answer (opens in new window) Tables Keypad Keyboard Shortcuts

Q: The expected value E(x) of a binomial probability distribution is

A: Given data The expected value of a binomial probability distribution is

Q: r a confidence level of 95% with a sample size of 30, find the critical t value

A: given data, CI=0.95α=1-0.95=0.05n=30df=n-1=30-1=29ctitical t- value =?

Q: Construct a confidence interval at a 90% confidence level for estimating the population mean if n =…

A: Given: Sample size n = 24 Sample mean X = 47 Sample standard deviation s = 20 Confidence level = 90%…

Q: Give a 99% confidence interval, for µ₁ −µ2 given the following information. n1 n₁ = 50, x1 = 2.03,…

A: given data  x¯1 = 2.03s1 = 0.4n1 = 50x¯2 = 2.52s2 = 0.98n2 = 4599% ci for μ1 - μ2   df =…

Q: Given the information provided, need help checking for outliers in each data set and state the value…

A: From the above data First find the the outliers of caffeine pill The data for caffeine pills 22.8,…

Q: A concrete mix is designed to withstand 3000 pounds per square inch (psi) of pressure. The following…

A: From the provided information, Sample size (n) = 9 Data values are as follow: 3950 4090 3100…

Q: Find the 2525 -th percentile for the standard normal random variable ZZ

A: For aa standard normal variable, mean is 0 and standard deviation is 1.

Q: Given the information provided, need help testing for evidence of faster swim times for swimmers who…

A: From the above data first we calculate the mean and standard deviation of caffine and plcebo

Q: In a study of the accuracy of fast food drive-through orders, Restaurant A had 209 accurate orders…

A: Given: Number of accurate orders, X1=209 Number of inaccurate orders, X2=57 We need to construct 90%…

Q: A simple random sample of size n=15 is drawn from a population that is normally distributed. The…

A: Given information: n=15 x=57 s=20 Confidence level is 95% Significance level is 5%=0.05…

Q: heel in 93 par d) ... ) Construct the 95% confidence interval for the percentage of all auto…

A: given data,x=95n=579p^=xn  =95579  =0.1641CI=0.95α=1-0.95=0.05

Q: Question The followin employees of Calculate the 29, 22, 31 Select one a) 42 b) 32 c) 24 d) 44

A: given data,29,22,37,44,55,42,47,42,32,46,53data arranging observation in the ascending order ,we get…

Q: Although studies continue to show smoking leads to significant health problems. 25% of adults in the…

A: given data  P(smoke) = p = 0.25 sample size (n) = 200 we have to use normal approximation of…

Q: A poll of 2 comma 035 randomly selected adults showed that 90​% of them own cell phones. The…

A:

Q: Regression analysis performed using Excel in separating costs into variable and fixed resulte in the…

A: Y=f+vX

Q: QUESTION 11 You hypothesize that drinking water increases test scores so you design a study…

A: Given that  Sample sizes n1=27 , n2=35

Q: Nine experts rated two brands of coffee in a​ taste-testing experiment. A rating on a​ 7-point scale…

A: Given information: Expert initials Brand A rating  Brand B rating C.C. 25 27 S.E. 27 27…

Q: Suppose a professor is interested in seeing whether or not they hold their student's attention…

A: The observed number of times, the sampled individual students were seen checking their phones is: 2,…

Q: 3. The tolerable level of a certain pollutant is 16 mg/l. A researcher takes a sample of size n =…

A: q-3)given data n = 50 x¯ = 18.5s = 795% ci for μ= ?

Q: A probability experiment consists of rolling a fair 6-sided die, numbered 1 to 6. Find the…

A: Given,A six sided die is rolled once than the possible outcomes ares={1,2,3,4,5,6}

Q: frequency Histogram 7: Income (15,26] (26,36) (36,47) (47, 185 Income in 1000 Histogram 9: Number of…

A: A histogram is one of the graphical representations of the data. In the histogram, several bars…

Q: Scenario 2 Researchers have long known that people feel lonely when they are ostracized by other…

A: The objective is to test whether there exists a significant difference between pre-test scores and…

Q: Find t0.995t0.995 for TT distribution with 11 degrees of freedom. t0.995

A: Given information: Level of significance (α)=0.01  d.f.=11 Find: t-critical value Define, The t…

Q: Problem 2 A major automobile company is interested in reducing the time that customers have to wait…

A:

Q: th. Six students are chosen at random from the class and given a math proficiency t. The professor…

A: Given that  Sample size n =6 Population mean =70 NOTE:- According to bartleby guidelines expert can…

Q: n a random sample of 100 audited estate tax​ returns, it was determined that the mean amount of…

A: Given data,n=100x¯=3468s=2571CI=0.90α=1-0.90=0.10df=n-1=100-1=99

Q: he Acme Company has developed a new battery. The engineer in charge claims that the new battery will…

A: Notation 1  for new  2 for old

Q: The average annual salary for all U.S. teachers is $47,750. Assume that the distribution is normal…

A: Given dataThe average annual salary is $47,750The standard deviation is $5680Here we have to find…

Q: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She…

A:

Q: Question 19 It has been found that one out of every who visit a people four retail website make a…

A: given data  P(purchase worth R500 or more) = 14 P(not buy less than R500) = 1 - 14 = 34 sample size…

Q: A study funded by the federal government found that about 1 in 5 Americans suffered from some form…

A: From the provided information, It is found that about 1 in 5 Americans suffered from some form of…

Q: The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine…

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

Q: The following data represent the pulse rates (beats per minute) of nine students enrolled in a…

A: Here, the population size, N = 9.

Q: professor chology a good grasp of Basic math. Six students are chosen at random from the class and…

A: We have given that  Sample size n =6 Population mean=70

Q: Note: Excel / Stat computation (Output) is already provided to you. A study was conducted to…

A: Given Level of significance ɑ=1%, n=sample size=25

Q: A tripling of the value of x results in the value of y increasing by a factor of nine.

A: we have to find   A tripling of the value of x results in the value of y increasing by a factor of…

Q: A researcher was interested in the relationship between number of close friends and self-esteem. A…

A: From the given information,   Close Friends(X) Self-Esteem(Y) Mean 8.90 5.20 SD 3.75 2.15…

Q: A telemarketer's computer selects phone numbers at random. The telemarketer has recorded the number…

A: age frequency under 18  30 18-25 27 26-35 38 36-45 59 over 45 54

Q: An analyst takes a random sample of 25 firms in the telecommunications industry and constructs a…

A:

Q: Tdf=53T∼Tdf=53, use technology to find the probability P(T>2.16)P(T>2.16): P(T>2.16)=P(T>2.16)=

A: given data for t-distribution df=52test statistics t=2.16here we have to find out the p-value for…

Q: Let X be a random variable that can take values x = 2,4,6,8 and has probabilities given by the…

A: It is given that X be a random variable that can take values x = 2,4,6,8. P( X = x ) = 3x/60…

Q: Thank you for your help! What does the expoenental - ( example: x¯) represent/mean?

A: Given: The average student spends about 17 hours each week preparing for classes. The standard…

Q: A hairdresser wanted to see if her clients bought more products at the end of their appointment if…

A: From the provided information, for the considered αof 0.05, the obtained t-calculated values for…

Q: Construct a 90​% confidence interval of the population proportion using the given information.…

A: x=240  n=300  p= 240/300 = 0.8 q = 1-p = 1-0.8 = 0.2

Q: A professor wants to know if her Psychology statistics class has a good grasp of B math. Six…

A: Solution: Given information: n= 6 Sample size μ=70 Population mean x=∑xn=4756=79.1667 Sample mean…

Q: smoking, 197 patients were given sustained​ care, and 80.2% of them were no longer smoking after one…

A: Given n=197  0.05 significance level

Q: QUESTION 16 You are interested in investigating the efficacy of a stressor and design an experiment…

A: Given that  Sample size n =12 Level of significance =0.05

Q: QUESTION 7 You hypothesize that drinking water increases test scores so you design a study comparing…

A:

Q: (a) Construct a relative frequency distribution. Speed (km/hr) Relative Frequency 10-13.9 14-17.9…

A: Relative Frequency distribution is given by =class frequencytotal frequency

Q: *** out finding the confidence intervals, explain which one will have the larger margin of error.…

A: Given P1=0.56 n1=250 P2=0.55 N2=1000