What is the probability that all six arrive within two days? (0.7351) b. What is the probability that exactly five arrive within two days? (0.2321) c. Find the mean number of letters that will arrive within two days. (5.7

Q: Determine the probability that in a sample of 100 the sample proportion is less than .75 if p = 0.80

A: Given, Sample size, n = 100 Population proportion, p =0.8 Z = p^-pp1-pn

Q: The number of calls received by an office on Monday morning between 8:00 AM and 9:00 AM has a mean…

A: Answer: Using the given data, Let X: The number of calls received by an office on morning between…

Q: The United States Postal Service reports 95 percent of first class mail within the same city is…

A: Given,sample size(n)=6 probability of success(p)=0.95and probability of failure(q)=1-0.95=0.05here…

Q: A class has 18 boys and 12 girls. The teacher calls on students at random to recite. What is the…

A: Given that  Total students=18+12=30 Boys students=18 Girls students=12 Teacher calls on students at…

Q: b. What is the probability that the sample mean is less than-12? (Round final answer to 4 decimal…

A:

Q: For a population With a mean of 75 and a standard deviation of 12, what is the probability that a…

A:

Q: C. The probability that the the child will be older than 5 years old? | 0.8681 d. The probability…

A: Consider that the answer of the given part a, b, and c are the correct answer. And distribution is…

Q: The number of calls received by an office on Monday morning between 8:00 AM and 9:00 AM has a mean…

A: Answer: From the given data, Let X represent the number of calls received by an office on morning…

Q: shop receives a batch of 1000 cheap laptops. The probability that a laptop has a defective part is…

A: Given that  n=1000 , p=0.5%=0.005

Q: Objective: Probability involving percentages Business Weekly conducted a survey of recent graduates…

A: (1) Obtain the probability that less than 90% of the 77 recent graduates have an annual salary…

Q: According to a Gallup Poll, the probablity that a Republican approves of the death penalty is 69%.…

A: The probability that Republicans approve of the death penalty is 69%.p=0.69wants to calculate…

Q: Calculate the probability of rolling at least one “5” after 6 rolls: a. Use the relative frequency…

A: In the given situation, dice is rolled 6 times. Total number of outcomes is 6^6=46656 Among 46656…

Q: Pls help ASAP.

A: Given that a professional archer claims to hit his target 4 out of 5 times. Then the probability…

Q: A fair coin is flipped 8 times. What is the probability that the number of flips that come up heads…

A: Given - A fair coin is flipped 8 times. To find - What is the probability that the number of flips…

Q: 4632673 flights arrived in Dubai’s airport last year. 43135 from them arrived from Europe. Estimate…

A: Given, 4632673 flights arrived in Dubai’s airport last year. 43135 from them arrived from Europe.…

Q: Assume that​ 15% of students at a university wear contact lenses. We randomly pick 200 students.…

A: Given,Population,proportion,,Number of sample,,Using formula,,Z-score =

Q: An automated assembly line produces 43,500 parts per duty cycle. The probability that a randomly…

A:

Q: What is the probability that 8 adults selected at random from the town all have health insurance? G

A: It is given that the random variable X i.e, health insurance follows Binomial distribution with…

Q: en studying radioactive​ material, a nuclear engineer found that over 365​ days, 1,000,000…

A: Solution

Q: The probability that more than 14 of those survyded feel the state , n=20 , p=0.45

A: Answer: From the given data, Sample size(n) = 20 P = 0.45 X~Binomial distribution(20,0.45)

Q: The mean number of defective units in a large assembly line is 4.3 units per day . Find the…

A: It is given that, The mean number of defective units in a large assembly line is 4.3 units per day.…

Q: b. The probability is 0.18 that the air pollution level in a given region will be in the unsafe…

A: HERE given ,  the probability is 0.18 that the air pollution level in a given region will be in the…

Q: The probability of a transformer that has been refurbished at a factory being defective is 0.15. An…

A: Given the probability of a transformer that has been refurbished at a factory being defective =…

Q: Customers arrive at a checkout counter in a department store at an average of 7 customers per hour.…

A: The given information is about the arrivals in a checkout counter in a store. The average number of…

Q: he proportion of eligible voters in the next election who will vote for the incumbent is assumed to…

A: Given that The proportion of eligible voters in the next election who will vote for the incumbent is…

Q: A manufacturing engineer takes 22 samples from a manufacturing process to verify if the production…

A: Given that A Manufacturing engineer takes 22 samples from manufacturing process.Sample size (n) =…

Q: The mean number of car sold by Beachcomber LTD per day is 3.What is the probability that in any…

A: Formula , P ( X = x ) = e-λ λx / x!

Q: probability that there less than 2 accidents in a week?

A: here given, average of 4 accidents in week here use poisson process because  Event occurrence rate…

Q: The weight of potatoes from a supermarket is evenly distributed between 6 and 9 ounces. A bag is…

A: Here, a=6 and b=9.

Q: Based on a poll , among adults who regret getting tattoos , 30 % say that the too young when they…

A: Given, p=30% = 0.3 n=5 q=1-p=1-0.3=0.7

Q: A nylon connector manufacturing plant yields 15 % defective items. If 1000 connectors are randomly…

A: Let us define X as the number of defectives follows Binomial distribution with n=1000 and p=0.15.…

Q: 13) Approximately 59.4% of adults have added bleach to their laundry. Assume six adults are randomly…

A: Given n=6 P=0.594

Q: The percentages of weapons used in murders in a certain year are described in the pie chart.…

A: Ans A and B:

Q: In a recent year (365 days), a hospital had 5532 births. a. Find the mean number of births per day.…

A: In a year a hospital has 5532 birthsFor a single day= births in a single dayLet "x" be the no. of…

Q: Radioactive Decay Radioactive atoms are unstable because they have too much energy. When they…

A: a.For cesium-137, it was found that 1,000,000 radioactive atoms decayed to 977,287 in 365 days. That…

Q: When studying radioactive​ material, a nuclear engineer found that over 365​ days, 1,000,000…

A: The  studying radioactive​ material found that 25,575 atoms decayed during 365 days. That is,…

Q: Of 100 patients in a hospital with a certain disease, ten are chosen to undergo a drug treatment…

A: Let us define some events A : a patient undergoes drug treatment. B : a patient does not undergo…

Q: Use the standard normal probability chart, included in this exam, to look up the following numbers…

A: (a) Using the standard normal probability chart, the probability corresponding z = -0.0492 is, From…

Q: Q2/ Clothes manufacturing machine, the probability of appearing damaged products is C At the…

A:

Q: find mean and sd.. Outcome Probability 1 0.02 2 0.13 3 0.21 4 0.18 5 0.46

A: