(B)Internet service providers (ISP) need to resolve customer problems as quickly as possible. The probability for a customer call regarding Intemet service interruption is resolved within one hour is 70%. During one day, the company had 10 customer calls. a) What is the probability that exactly four of the customers had their problems solved? (Round your answer to the nearest thousandth). b) What is the mean of the number of calls who had their problems solved? c) What is the variance of the number of calls who had their problems solved?

Q: What is the probability that a randomly selected beanbag chair is made from suede and is filled with…

A: The data is as follows   Foam Beads Total Velevet 4 4 8 Suede 5 3 8 Total 9 7 16

Q: Suppose a large shipment of stereos contained 11% defectives. If a sample of size 311 is selected,…

A: Solution: From the given information, p=0.11 and n=311.

Q: If the odds of winning on a scratch-off lottery ticket are 8:1,103, what is the probability of…

A: Let A be the event of getting winning on a scratch-off lottery ticket Odd against ratio=8:1103

Q: 3. The defect rate for a laptop is 4%. Assuming the defects occur independently, what is the…

A:

Q: What is the probability a certain tire of this brand will last less than 53,400 miles? What is the…

A: Given Mean=60000 Standard deviations=1700

Q: Based on historical data, your manager believes that 44% of the company's orders come from…

A: Obtain the probability that the sample proportion is between 0.22 and 0.33.   The probability that…

Q: What is the probability of randomly selecting an adult who has a heart rate between 60 BPM and 70…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Part 1 of 4 (a) What Is the probablity that six or more of them used their phones for guldance on…

A: Given : Probability of success,p = 0.57 Number of trials,n = 14

Q: (a) What is the probability that 3 of the faculty have blood type O-negative? (Round your answer to…

A:

Q: A person who took the survey is selected at random. 1. What is the probability that the person has a…

A: The given data can be described as   $40000 or less more than $40000 Total Diploma 44 101 145…

Q: On average, an IRS auditor discovers 4.7 fraudulent income tax returns per day. On a randomly chosen…

A: It is given that; the auditor discovers 4.7 fraudulent income tax returns per day.Thus, the random…

Q: What is the probability that fewer than 3 will arrive in the clinic as walk-in customers?

A: Probability=0.25

Q: Suppose that one in six smartphone users have fallen prey to cyber-attack. We use a sample of 224…

A:

Q: (3) What is the probability of a paint defect which results from an improper amount of paint and…

A: Given, Event Probability Too much enamel 0.23 Too little enamel 0.23 Uneven application…

Q: 1) If the management wants to give free gifts to at most 10% of the customers, what should the…

A: The amount is given by x = u + z0.1σ x = 400 + 1.282 x 30x = 438.46

Q: 2. The quality control manager of Marilyn’s Cookies is inspecting a batch of chocolate-chip cookies…

A:

Q: What is a theoretical probability of getting two heads when tossing two fair coins? 

A: Here we need to find the theoretical probability.

Q: dice twice, what is the probability that the sum of numbers is equal to 9? Enter your answer as a…

A: The sample space for two standard dice is given as:…

Q: What is the probability of no failures in a given day? b. What is the probability of one or more…

A:

Q: What is the probability that a randomly selected friend tasted peaches and preferred non- organic?

A: The data is given by   Organic Non-organic Total Apples 4 3 7 Peaches 4 1 5 Toral 8 4 12

Q: A journalist wanted to learn the views of the chief executive officers of the 500 largest U.S.…

A: Given : Sample size (n)=81population proportion (p)=0.55 P( p^<0.50)=?

Q: Suppose a large consignment of cell phones contained 19% defectives. If a sample of size 399 is…

A: Given Population proportion is 19% sample size is 399

Q: The average number of calls received by a switchboard in a 30-minute period is 18.

A: It is given that the average number of call received by a switchboard in a 30 minutes periods is 18.…

Q: what is the probability more than half of the sampled students are working full time?

A: Assume sixty percent of all NKU students work full time. If a random sample of 70 NKUstudents is…

Q: What is the probability that a student chosen at random is between the ages 10 and 13 and skips…

A:

Q: Suppose a large shipment of stereos contained 3% defectives. If a sample of size 396 is selected,…

A: Obtain the probability that the sample proportion will be greater than 5%.   The probability that…

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

A: Here, n = 1000, p = 0.15.

Q: Consider the case where the predetermined average number of bus arrivals at the Cubao Station is 6…

A: As given, the average number of bus arrivals at the Cubao Station is 6 per 15-minute period. This…

Q: Suppose a large consignment of televisions contained 22% defectives. If a sample of size 480 is…

A:

Q: 3. Suppose that the average outstanding credit card balance for your professionals is 11,200 with a…

A: Given: Mean value is, μ=11200. Standard deviation is, σ=2600. Number of professionals selected in…

Q: The mean number of patients admitted per day to the emergency room of a small hospital is 1.5. If,…

A:

Q: 3) What is a probability of selecting a customer whose expenditure is differ than the population…

A: Given Information: The expenditure for all customers at this supermarket is normally distributed…

Q: What is the probability that between 10:00 and 10:30 the switchboard will receive more than 9 calls…

A:

Q: (a) What is the probability that in a randomlý sampled individual, gene 1 is dominant? (b) What is…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: What is the probability that a randomly selected participant tasted apples and preferred…

A: Followings are the Explanation of the question 1) Probability is ratio of Number of favorable cases…

Q: What is the probability of selecting an applicant who has a score of at least 166?

A: Let X denote the GRE quantitative scores. Given that X follows N(mean = medain = 158, SD = 3), then…

Q: What is the probability that a randomly selected competitor reacted in 0.3 to 0.7 seconds or was not…

A: Since , the table given below ,   Less than 0.3 seconds 0.3 to 0.7 seconds Total Male 14 7 21…

Q: What is the probability of a random student being chosen who is a female and is not between the ages…

A: Given,          PM=0.60          PAge 18 and 20=0.35          PM and Age 18 and 20=0.26…

Q: The National Association of Realtors estimates that 23% of all homes purchased in 2004 were…

A: Given: p=0.23 n=800 x=200 The sample proportion is, p^=xn=200800=0.25

Q: 29 percent of all Samsung cell phones are submitted for service while under warranty. Of these, 66…

A: Given: p(submitted for for service) = 0.29 p(repaired |submitted ) = 0.66 p(replaced | submitted ) =…

Q: Based on historical data, your manager believes that 26% of the company's orders come from…

A:

Q: What is the probability of randomly selecting a female respondent from the sample?

A: Given contingency table is:   Probability = number of favorable events/ Total number of events in…

Q: Based on historical data, your manager believes that 31% of the company's orders come from…

A: The provided information are: Population proportion (p) = 0.31 Sample size (n) = 119 Consider, the…

Q: According to one study, 40% admit to eating chocolate when stresses. Suppose that 40% figure is…

A: Given that, According to one study, 40% admit to eating chocolate when stresses. If 40% figure is…

Q: The mean number of patients admitted per day to the emergency room of a small hospital is 22. If, on…

A:

Q: Suppose a large shipment of scanners contained 9 % defectives. If a sample of size 492 is…

A: Suppose a large shipment of scanners contained 9 % defectives. If a sample of size 492 is selected,…

Q: What is the probability that a randomly chosen survey respondent is a male or chose "recreation" as…

A: There are totally 200 people are considered in which 96 are males, 62 are recreations, and 23 are…

Q: A market research firm conducts telephone surveys with a 40% historical response rate. What is the…

A:

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.