The normal curve is used to determine actual number of occurrances, not percentages. O True O False

Q: Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol use....

A:

Q: d (9x² – 4x' - 12) 5 (a) dx

A:

Q: standard error.

A: a. The given information in Non-college Grades Y=2890      Average salariessY=520     standard devia...

Q: A committee of 4 from among them is to be formed. There are 3 economists, 4 engineers, 2 statisticia...

A:   Given problem Given that   There are 3 economists, 4 engineers, 2 statisticians and 1 doctor. A co...

Q: In a certain neighbourhood, 32% of homeowners have a cat, 45% have a dog and 40% have neither. We ra...

A:

Q: 45. A regression analysis yields the line ŷ = 18 + 0.25x. One of the subjects, Mary, has x = 40 and ...

A:

Q: Someone wants to know how many different outfits they can make with 3 coats, 5 pants, 7 shirts, and ...

A:

Q: A production process manufactures electronic components with timing signals whose duration follows a...

A: Here we have given that X ~ N (µ, σ )  

Q: For items 1-3, please refer to the problem below: The average grade of the students in Statistics is...

A:

Q: Grand Sun Buffet is a large restaurant chain. After paying for a meal at Grand Sun Buffet, customers...

A:

Q: Typical values for alpha generally range from 1% to 10% for hypothesis testing. Select one: O True O...

A: Alpha represents significance level 

Q: The digits 2, 3, 4, 5, 6, and 7 are randomly arranged to form a three-digit number. (Digits are not ...

A: Given digits is 2,3,4,5,6,7No.of digits = 6No. of digits number to be arranged = 3

Q: retirement. Carry out an appropriate hypothesis test and see whether there is any difference between...

A: Here use two tail test of comparing 2 proportion 

Q: ilustration 17.8. For a binomial distribution the mean is 6 and standard deviation is 2. Write out a...

A:

Q: 3. Suppose that X has a Poisson distribution with h = 80. Find the probability RCX< 70) based on the...

A: Given that, h= 80  It means that  Mean= 80 which is greater than 10. So normal approximation is reas...

Q: Suppose the side effect of a new drug makes people (a) very sick, (b) sick, (c) kind of sick, or (d)...

A: Probability table, Effect very sick sick kind of sick not sick at all Probability (p) 0.1 0.2 0...

Q: The random variable X has the probability distribution given in the following table. 2 3 P(X = 1) 0....

A:   Given problem Given that   Given that  E( X ) = 3.5 ∑X P(X) = 3.5 0.03 + 2a + 0.81 + 4b+ 5c = 3.5 ...

Q: In a lottery, the top cash prize was $646 million, going to three lucky winners. Players pick four d...

A:

Q: 5-69. The probability of winning $3 on the spinner at right is equal to the chance of winning $5. Fi...

A:

Q: If you are dealt 4 cards from a shuffled deck of 52 cards, find the probability that all 4 cards are...

A: Given:  total nonof cards =52  nonof diamond cards =13  to draw 4 cards then probability that all th...

Q: 1 2 3 0.001 0.031 0.24 0.41 0.4 p(x) What is the variance? 4)

A: Given data, Find variance?

Q: 5. Find the probability that a leap year has 52 Sundays.

A: Given  52 sundays in leap year   

Q: Requests for online help at a website chat follow a Poisson distribution with a mean rate of 0.2 req...

A:

Q: In a lottery, the top cash prize was $646 million, going to three lucky winners. Players pick four d...

A:

Q: the probability that he fails the short exam with a passing rate of 50% and will only have 10 questi...

A: Here Given  Mark decided to take short exam which has 10 Questions and each has 4 possible answers.

Q: The next two questions (25 and 26) refer to the following: Three piggy banks each contain 20 coins: ...

A:

Q: What is the probability of rolling, on a fair dice a number greater than 4?

A:

Q: which Store has greatest average number of tablet sold? which Store has least avernge number tablet ...

A: We have given that the probability distribution of three different stores and their mean &amp; varia...

Q: Illustration 16.19. A bag contains 4 white and 5 black balls and another bag contains 6 white and 10...

A: Here, P(White |Bag 1) =4/9 P(White |Bag 2) = 6/16 P(Bag 1) =1/2 P(Bag 2) =1/2

Q: lim (x + 5)(2x + 5) 1) (x – 2) (b) x → * (3x + ·

A:

Q: 44. A regression analysis yields the line ý = 32 + 0.4x. One of the subjects, Racheal, has x = 60 an...

A: ŷ=32+0.4x   x=60, y=52   

Q: The table displays the number and type of tickets bought for a play that was performed in both the a...

A: Let A represents 'a child tickets is bought for a play' and B represents 'the play is performed in t...

Q: What is the probability that a green ball is selected from the first box?

A: Here use tree diagram 

Q: 4. The joint PDF of two continuous random variables X and Y is given by fx+y 0<x<1, 0<y<1 S(x, y) = ...

A:

Q: A survey of B2B marketers (marketers that focus primarily on attracting businesses) and B2C marketer...

A:  

Q: The alpha level.001 has a corresponding z score of .002 O True O False

A:

Q: In an IT Certification Examination, the mean was 75 and the standard deviation was 5. If Pam z score...

A: Let X be the examination score from normal distribution with mean (μ) = 75, standard deviation (σ) =...

Q: r=0%, Lisa wants to borrow 100 to open business. Revenue is random y=100 with prob 1/2 and y=300 wit...

A:

Q: A single die is rolled twice. Find the probability of rolling a 4 the first time and a 3 the second ...

A: Given: A single die is rolled twice.  

Q: An electrical firm manufactures light bulbs that have a length of life that is normally distributed ...

A:

Q: KExample 7. Draw a Bar chart of the procurement of rice (in tons) in an Indian state: Year 1998 1999...

A:

Q: The probability (i) that A can solve a prob Statistics is 4/5, (ii) that B can solve it is 2/3, (iii...

A: We have given that A can solve a problem in statistics is 4/5 B can solve it is 2/3 C can solve it i...

Q: Arturo has purchased the insurance policy from an insurance company to cover the value of his new ca...

A:

Q: Illustration. 16.75. If A, A, and A, be any three events prove that 3 P(A +A + Az) =EP(A;) -EP(A;A;)...

A:

Q: ased on a smartphone survey, assume that 56% of adults with smartphones use them in theaters. In a s...

A: We have given that  Sample size n =22 Population proportion p=56%=0.56  

Q: The probability that an evening college student will graduate is 0.4. Determine the probability that...

A:

Q: If a candidate wins an election and, in a recount, the only changes are that one or more of the othe...

A: Given that, if candidate wins an election and in a recount the only changes are that one or more of ...

Q: 1 - It is equally probable that the pointer on the spinner shown will land on any one of the eight r...

A:

Q: Suppose that you toss three fair coins. You get a score of 1 for each coin that shows tails and 1 fo...

A: When three fair coin are tossed the sample space S is give by  S= {HHH, HHT, HTH, THH, HTT, THT, TTH...

Q: In a five card poker hand, what is the probability of being dealt exactly one seven and no picture c...

A: Here given five card poker hand dealt from standard deck of 52 cards  Here total picture cards = 12 ...