Assume that blood pressure readings are normally distributed with a mean of 120 and a standard deviation of 4.6. If 35 people are randomly selected, find the probability that their mean blood pressure will be less than 122. O 0.0051 O 0.6681 O 0.8245 O 0.9949

Q: Tossing a fair coin 20 times, calculate the following probability: a. Probability of obtaining at mo...

A:

Q: Flagstaff found 470 NAU students who drink coffee daily. Find a 95% confidence interval for the true...

A: Given

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A: Mean : A mean is that the basic mathematical average of 2 or additional numbers. There area unit man...

Q: (a) What is the probability that a PC is in a bedroom? (b) What is the probability that it is not in...

A: here use given probability

Q: 5. Find the odds aga answers.

A: Given data,multiple choice question has 6 possible answersFind the odds against correctly guessing t...

Q: Find Probability that, a person who test positive has disease.

A: here define events person have disease = D test result positive  = T  

Q: One circular spinner is marked into four regions. Region A has an angle of 100° at the center of the...

A: a) A circle has a total of 360 degrees, so the probability of region A will be = 100/360 = 0.278, fo...

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A: Given that,  Total number of high school students = 112 Let 'A' be an item represents the 'laptop' L...

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A: It is the basically question of probability density function  The Probability Density Function(PDF) ...

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A:

Q: Two marbles are drawn from a bag that is 3 red, 4 purple, and 2 black. Find the probability that you...

A:

Q: . If a population has a mean of 4.87, what is the mean of the sampling distribution of its sample me...

A: Given that  7)Population mean μ =4.87 NOTE:- According to bartleby guidelines expert can solve maxim...

Q: 16 Given a normal distribution with u = 104 and o = 25, and given you select a sample of n= 25, comp...

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Q: determine who will give a gift to whom. In how many ways can this be done if exactly four staff memb...

A: Given Information: There are 25 staff members out of which 4 staff members draw their own names.

Q: 2. In how many ways can twenty 1000-peso bills be given away to four of ten people where each of the...

A: Given : number 1000 -peso bills (n)=20Number of receivers (x) = 4 In this example concept of combina...

Q: Assume that 1 in 300 people cany the defective gene causes ed colon cancer iha sanple of 1000 indivi...

A: Given that  Sample size n =1000 Success of probability p =1/300=0.0033  

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1025 dollars. Assume the stan...

A:

Q: 1. Briefly explain why statistics are needed.

A: Given that  Briefly explain why statistics are needed :   

Q: A source emits four colours {Red, Blue, Green, Yellow} with probabilities as 0.1, 0.2,0.3, 0.4, resp...

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: Alex has to travel from A to D changing buses at stops B and C enroute. The maximum waiting time at ...

A: Alex has travel from A to D changing buses at stop B and C enroute. The maximum waiting time at eith...

Q: Question 1 f Y1 and Y2 are independent Poisson random variable with parameters d1 and A2 re- spectiv...

A:

Q: "For the following system, write down the expression for system reliability: A C E D C Assuming that...

A: A and B are in series.  So reliability in series is,  RAB= RA*RB  Where RA and RB are the reliabilit...

Q: According to records, the amount of precipitation in a certain city on a November day has a mean of ...

A:

Q: Problem 1: The number of classmates who are K-Pop fans. along with its corresponding probabilities i...

A: Given data is X P(X) X*P(X) X-μ X-μ2 (X-μ)2*P(X) 13 0.25 3.25       14 0.18 2.52       15 0...

Q: Suppose two random variables X and Y have a joint pdf f(x, y) = ax°y, 0<x < 1,0 < y 1, 0 < x < 1,0 <...

A:  

Q: The antibody production of 12 male red-winged blackbirds before and after recelving testosterone imp...

A: It is given that margin of error (E) is 0.07 and the confidence level is 0.80.

Q: Q3: A study was conducted to determine the effectiveness of a particular test for detecting a ertain...

A: Given Information: Total number of individuals is 120. Of the 120 people, 18 had the disease and the...

Q: 6. (Sections 8.8 and 8.9) Determine whether the following piecewise-defined function is a probabilit...

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Q: (a) Calculate Tom's point estimate. (b) Given that the estimated standard er- ror of (pi + P2)/2 is ...

A: Bob selects independent random samples from two populations and obtains the values bar p₁ = 0.700 an...

Q: 5) From a deck of 52 playing cards, 5 cards are to be drawn. a. How many 5-card hands are possible? ...

A: Here  In standard deck  Total no of cards=52  

Q: To assess the accuracy of a laboratory scale, a standard weight that is known to weigh 1 gram is rep...

A: Given data is0.95,1.02,1.01,0.98sample size(n)=4

Q: You and your partner share a tandem bicycle. You both rely on it to get to work. Unfortunately, you ...

A: Given that the analysis of tracking data has shown that the times when you are ready to go each morn...

Q: 2 strains of Zombie virus strains have been discovered in the US! The strains are described below: S...

A: Given that, 2 strains of Zombie virus strains have been discovered in the US! The strains are descri...

Q: Assume that when human resource managers are randomly selected, 47% say job applicants should follow...

A: Given data is p=0.47n=5Let "x" be the job applicants should follow up within two weeksx~Binomial(n=5...

Q: In a standard deck of playing card, what is the probability of picking a black card or a number-card...

A:

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

A: For the given data ( a ) mu =? ( b ) sigma = ?

Q: Suppose that 3 cards are drawn from a​ well-shuffled deck of 52 cards. What is the probability that ...

A: GivenTotal no.of cards in a deck = 52no.of red cards in a deck = 26        (i.e., diamonds and Heart...

Q: Čalculate the range of birthweights that will account for 68% of infants: Low value = grams High val...

A: Here use IMPIRICAL RULE 

Q: The table below shows the survey results among a group of students on the number of pets they have a...

A: Given: Y 0 1 2 3 4 5 Total Frequency 5 4 6 8 1 1 25  

Q: In 2019, approximately 97.4% of all the runners who started the Boston Marathon (in Boston, Massachu...

A: Given that  Approximately 97.4% of all the runners complete the race.  P = 97.4% = 0.974 (1-P) = 1-0...

Q: A random sample of 40 professional basketball players indicated the mean height to be 6.45 feet with...

A: Given that  x̄ = 6.45 , s = 0.31 , n = 40 95% confidence interval 

Q: P(X) X*P(X) X-u (X-u)^2 [X-))^2]*P(X) 0.48 3 0.36 4 0.11 0.05 LO

A:

Q: Entries in the table give the area under the curve between the mean and z standard deviations above ...

A: Let X be the random variable from normal distribution with mean (μ) = 28 and standard deviation (σ) ...

Q: (b) Find Ox Consider the sampling distribution of the sample mean x. Complete the following. Do not ...

A: We have given that  Mean, μ = 2.38 Standard deviation, σ = 0.93 If X ~ N( μ, σ ) then X̅ ~ N( μ, σ/√...

Q: The number of computers sold per day at a local computer store, along with its corresponding probabi...

A: Solution

Q: 5. A tricycle initially has six passengers and stops at different establishments in the city. If eve...

A:

Q: The table to the right shows the number of people testing positive for a certain disease amongst tho...

A: Required probability is P(tested positive | have disease)

Q: The results of a nationwide aptitude test in mathematics are normally distributed with m=80 and s=10...

A:          

Q: 4) Listen On a typical quiz, 10% of the class scores 4 points, 20% scores 3 points, 50% scores 2 poi...

A:

Q: Bob selects independent random samples from wo populations and obtains the values pi = 0.700 and p2 ...

A: