Find the unknown number in the proportion x 40 4 10 Question Help: Video Submit Question

Q: A bag contains 5 red balls and 8 blue balls. Each time a ball is selected, its colour is noted, and…

A: Given: A bag contains 5 red balls ad 8 blue balls. Each time a ball is selected, its color is noted,…

Q: The California license plate has one number followed by three letters followed by three numbers. How…

A: GivenCalifornia license plate has one number followed by three letters followedby three numbers…

Q: Find the minimum sample size n needed to estimate u for the given values of c, o, and E. c=0.98,…

A: Givenc=0.98standard deviation(σ)=6.5Margin of error(E)=2

Q: (a) Identify Ho and H₂. Choose the correct answer below. Ο Α. Ηο: μ = 40 H₂:μ#40 OC. Ho: μ240.6 Ha:…

A: Given that  Sample size n =30 Sample mean =40.6 Population standard deviation =7.7

Q: Alex and Boris are taking college preparatory exams. Alex writes ACT test, and scores 20 out of 35.…

A: The answer is attached below,

Q: Let X represent a binomial random variable with n=400 and p=0.8. Use Excel's function options to…

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Q: The number of air safety inspectors for selected years is shown in the table. Year 1996 1997 1998…

A: a) x y x2 y2 x⋅y 1996 3349 3984016 11215801 6684604 1997 3155 3988009 9954025 6300535 1998…

Q: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean…

A: It is given that  Mean = 20 minutes  Standard deviation = 5 minutes    Note: The p-value is taken…

Q: Use the confidence interval to find the margin of error and the sample mean. (0.196,0.300) The…

A: Given confidence interval is (0.196 , 0.300)Upper limit = 0.300Lower limit =0.196

Q: A box contains colored balls, each marked with a positive integer. Half of the balls are blue and…

A: The provided information is  Four dozen is 1-1/5=4/5 of the number of balls.  The total number of…

Q: A security expert claims that less than 19% fall homeowners have a home security alarm. State Ho and…

A: From the provided information, A security expert claims that less than 19% of all homeowners have a…

Q: Q6:The following distribution received each day during the past (50) days at the office of a…

A: Given that  Total sample size n=50 Class Frequency 0 - 12 4 13 - 15 12 16 - 18 20 19 - 21…

Q: A company has determined that 2 out of every 5255 bolts that it ordered is defective. What is the…

A: The number of defective bolts is 2 out of 5255 bolts.

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: Given that  Sample size n =26 Population mean μ =250 Standard deviation =59

Q: You have a set Y= { a, b, c, d, e}. How many ways can you arrange 2 elements of the set with…

A: Here, Y= { a, b, c, d, e}. Also arrange 2 elements of the set with repetition The repetition is…

Q: between In a study about the relationship the hardness of a concrete and the type of sand used, the…

A: Dependent variable and independent variable: The variable of interest, regarding which, the…

Q: A decision-making procedure to find out whether there is a significant difference between a claim…

A: Given statement is : A decision-making procedure to find out whether there is a significant…

Q: What is the range of all integers greater than 40 and less than 99 that are multiples of 3

A: To find : The range of all integers greater than 40 and less than 99 that are multiples of 3

Q: Let X denote the amount of time in hours that a battery on a solar calculator will operate…

A: Given,f(x)=253x-3     ;  2<X<10

Q: The following are the number of cars sold per day at ABC Motor corporation during the past 495…

A: Given data: Number of cars sold per day (x) Frequency of outcomes  0 30 1 100 2 142 3 71…

Q: Suppose a random variable, x, follows a Poisson distribution. Let μ = 2.5 every minute, find the P(X…

A: The provided information is…

Q: Use the given statement to represent a claim. Write its complement and state which is Ho and which…

A: Given ,Claim: P<0.69

Q: A binomial experiment is given. Decide whether you can use the normal distribution to approximate…

A:

Q: Suppose that you close your eyes and select at random two candies from the bowl which contains 2 red…

A: Solution Given That, Suppose that you close your eyes and select at random two candies from the bowl…

Q: Problem 3.1: Suppose the discrete random variable X has the probability distribution listed in the…

A: Given data is  x 4 5 6 7 8 9 12 f(x) 0.15 0.20 0.16 0.27 c 0.09 0.03

Q: The distribution of the scores on a certain exam is ​N(30​,10​), which means that the exam scores…

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Q: Two fair coins are tossed 225 times simultaneously and their outcomes were recorde as: Reduce…

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Q: Suppose that there is a 1.7% chance a planet will develop life, a 2.8% chance that the life will…

A:

Q: According to a genetics theory, a certain cross of guinea pigs will result in red, black, and white…

A: Obtain the probability that among 7 offspring 4 will be red, 1 black and 2 white. The probability…

Q: On a hiking trip, the ratio of the number of children to the number of adults is 3 to 5. Which of…

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Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z= -1.70. Decide whether…

A: Given,Test statistic(Z)=-1.70The test is left-tailed testand α=0.10

Q: The gas mileages (in miles per gallon) for 26 cars are shown in the frequency distribution.…

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Q: A data value of 99 corresponds to a standardized value of

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Q: In a survey of women in a certain country (ages 20-29), the mean height was 66.4 inches with a…

A: Given that.   X~N( μ , ?^2 )   μ=66.4     , ?=2.91   Z-score =( x - μ )/?

Q: Determine whether the claim stated below represents the null hypothesis or the alternative…

A: Alternative hypothesis is complementary  hypothesis of null hypothesis.

Q: Your friend grabs a die at random from a drawer containing two 4-sided dice, one 8-sided die, and…

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Q: Government regulations dictate that for any production process involving a certain toxic chemical,…

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Q: Suppose that the continuous random variable X has a cumulative distribution function given by 0, if…

A: Solution Given That, Suppose that the continuous random variable X has cumulative distribution…

Q: A binomial experiment is given. Decide whether you can use the normal distribution to approximate…

A: Givenp=0.86n=14

Q: (a) How many passwords are possible? (b) How many passwords are possible that do NOT repeat any…

A:

Q: Suppose that the joint density function of two random variables W₁ and W₂ is given by f(w₁, ₂) =…

A: Result:  X and Y are independent iff f(x,y)=f(x)f(y) Cov(X,Y)=E(XY)-E(X)E(Y)

Q: chloe's bookshelf has 6 books by Smith and 8 books by jones. if she removes 4 books at random, what…

A: Given data: Total books = 6 +8  = 14 She removes 4 books randomly To find: The probability of…

Q: There are six men and seven women in a ballroom dancing class. If four men and four women are chosen…

A:

Q: The Z-score is. (Round to two decimal places as needed.)

A: It is given that  The shaded area of the graph is 0.4129.

Q: The average hourly sale of a certain ride in an amusement park is P148.75/hr with a standard…

A: Given information- Population Mean µ = P148.75/hr Standard deviation (σ) = P75.76 Let X be the…

Q: Use the confidence interval to find the margin of error and the sample mean. (0.196,0.300) The…

A: Given confidence interval is (0.196  , 0.300)Upper limit(UL)=0.300Lower limit(LL)=0.196

Q: Find the probability that a lot of 100 items, of which five are defective, will be accepted in a…

A: Given that  Total number of items (N)=100  In which 5 are defective  the number of defective items…

Q: One person came to the bus. wing the timetable. will take the bus. The rando ne time this person has…

A: consider be the random variable denotes the time of a person has to wait. It follows continuous…

Q: Find the probability that the value of the exponential random variable with mean rate of 3.2 will be…

A:

Q: dence inter should reject Ho. Explain your reasoning. 0.54 right represent three samplings. Decide…

A: Solution Given That The three confidence intervals to the right represent three samplings. Decide…