a. Assuming that the rate of 23.9% is correct, find the probability that 398 or more of the 1482 adults have sleepwalked. b. Is that result of 398 or more significantly high? c. What does the result suggest about the rate of 23.9%?

Q: (a) What is the probability that a thickness is greater than 1.42 cm? (b) What thickness is exceeded…

A:

Q: d) A report indicates that 75% of all Parliament members agree with the proposal to lower the voting…

A: The given probability of all parliament members agree with the proposal is 0.75. It means that the…

Q: (a) If a random sample of 50 one-bedroom apartments is selected, what is the probability that the…

A:

Q: What probability value would be needed to complete the following probability distribution?

A: for valid probability distribution total probability always equal to 1

Q: (d) What is the approximate probability that the grade point average for 25 randomly chosen Math 118…

A: The study is about the grades in a math course.

Q: Given that an egg is large, what is the probability (between 0 and 1) that it was laid by a sumatra…

A: Let us define some events A : an egg is laid by chantecler variety  B : an egg is laid by sumatra…

Q: (d) Based on your answer in part (c), what is the probability that the two categories are different?…

A: The probability that two categories will be different will be: P(different categories) = 1- P(same…

Q: (d) Would it be unusual if the sample proportion of tax returns for which no tax was paid was less…

A: Given,n=120P=0.326

Q: The table below displays the results of a survey of 72 people in an office building on whether or…

A:

Q: A student is selected at random from a group of 400.   The results are summarized in the two-way…

A: Classical Definition of Probability: If there are n mutually exclusive, exhaustive, and equally…

Q: Maclean's Magazine reports the following information about ages of children receiving toys. The…

A: Given Data: x P(X=x) 2 and under 0.17 3-5 0.2 6-9 0.23 10-12 0.16 13 and over 0.24

Q: Teens who Prefer Hard Copy Book vs eBook Hard Copy Enjoy Both eBook 22 14 26

A:

Q: What is the percent probability that a family randomly chosen has both a red and a silver car? Round…

A:

Q: The table below displays the results of a survey of 72 people in an office building on whether or…

A:

Q: d. Based upon a smaller sample of only 150 St. Paulites, what is the probability that the sample…

A: Given Information: Population proportion of St. Paulites who drink bottled water more than once a…

Q: Suppose it is reported that 79 % of people subscribe to a cable or satellite television service. You…

A:

Q: Suppose the prevalence of alcoholism among college students is 20% among those living in group…

A: It is given that the prevalence of alcoholism(A) among college students is 20% among those living in…

Q: The Cincinnati Enquirer reported that, in the United States, 60% of adults and 82% of youths ages 12…

A: Let X be a random variable following normal distribution with mean μ and variance σ2, i.e.,…

Q: A group of 125 truck owners were asked what brand of truck they have and whether their truck has…

A: a) The total number of truck owners is 125.

Q: (d) What is the probability that a randomly selected U.S. adult views smoking as very harmful given…

A: Given that contingency table .Now using this table find required probability

Q: (a) What percentage of all cargos may be expected to be damaged? (b) If a damaged cargo is received,…

A:

Q: a.) What is the probability that the company uses training? b.) Suppose it is determined that the…

A: Here use probability tree from given information

Q: d. What is the probability that a female respondent drives either a truck or an SUV? e. If it is…

A: The cross-tabulation for gender and vehicle driven data with corresponding totals is,…

Q: d. What is the probability that it fires on the seventh trial given that it does not fire in the…

A: Given: Revolver holds up to 5 bullets. Exactly 1 bullet is loaded.

Q: What is the probability that a randomly selected unicyclist from Corvallis, OR. is not between 30…

A: P(selected is not from 30 to 39) = 1 - P(selected is from 30 to 39

Q: d. What is the probability that a communication will be a newspaper coupon for the diet product? e.…

A: 1. d. The probability that a communication will be a newspaper coupon for the diet product is,…

Q: What is the probability that the average attendance at the games in a sample of 50 will be above…

A:

Q: d. What is the probability that her trip will take exactly 50 minutes?

A: here given ,  The time it takes for Anna to travel between her home and her job is uniformly…

Q: . What is the probability that 187 or more of the sample will approve of President Biden’s andling…

A:

Q: Red Siver 21 36 160 33

A: We have to check

Q: Suppose that five microchips in a production run of thirty are defective. A sample of seven is to be…

A: The total number of microchips are 30 and 5 of them are defective. (a) The number of microchips that…

Q: (b) What is the probability that the second inspector assigns a higher safety inspector? score than…

A:

Q: a. What is the probability that exactly 10 are from their elementary school? b. What is the…

A: Given:  In one of the biggest schools in Metro Manila, 80% of their high school students are known…

Q: (a) What is the probability that x is within +$500 of the population mean if a sample of size 70 is…

A: here for part a and b  population  mean  = 51800 population standard deviation = 4000

Q: Assuming equal sex ratios, what is the probability that a sibship of 6 children consists a) three…

A: Total children (n) = 6 The sex ration are equal, that is p = 0.5 The process will follow binomial…

Q: A salesperson has found that the probability of a sale on a single contact is approximately 0.03. If…

A: Ans : The probability that a sales person sales on a single contact is 0.03 .  Let p be the…

Q: A bank has the following data on the gender and martial status of 200 customers…

A: P(single female )=30/100=0.15 P(married male)=100/200=0.5

Q: According to the table below, what is the probability that the age of a student chosen at random…

A:

Q: Suppose 40% of all vehicles are trucks. Of the next ten vehicles that pass on the road, what is (a)…

A:

Q: Suppose that four microchips in a production run of sixty are defective. A sample of six is to be…

A: a) total number of microchips= 60  We have to pick 6 microchips.  that can be done in 60C6 ways…

Q: The chance that a U.S. police chief believes raising the cost of parking tickets "significantly…

A: We have given that  n=9 , p=1/4=0.25  , q=1-0.25=0.75 X~Binomial(n=9,p=0.25) Find P(X=5)

Q: Use the method of your choice to determine the following probabilities.   a. What is the probability…

A: a) probability of rolling two 2s followed by one 6 on three rolls of a fair die sample space =…

Q: The table below displays the results of a survey of 72 people in an office building on whether or n…

A:

Q: a. What is the probability that is within $500 of the population mean if a sample of size 60 is used…

A: here given , for population mean = 71300 standard deviation  = 5000   here sample size used in both…

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

A: Required probability is Pstudents ages 10-13/skip breakfast

Q: A survey revealed that 36% of people are entertained by reading books, 32% are entertained by…

A:

Q: (b) If a sample of 10 cups of ice cream is selected, what is the probability that the mean of the…

A: Given that :  x¯ = 670σ=35n=10μx¯ =660

Q: b) Andrew Whittaker, computer center manager, reports that his computer system experienced 25…

A: Solution

Q: (a) For the next shaft, what is the probability that its diameter is between 8.5 mm and 13.0 mm? (b)…

A:

Q: Answer the Following Question Probability that a 4 or a red queen is drawn from a deck of…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.