0.1% of a certain type of RAM chips are defective. A student needs 20 chips for a certain board. How many should he/she buy in order for there to be a 99.9% chance or greater of having at least 20 working (not defective) chips?

Q: A Harris Interactive poll conducted in Fall, 2002 (A-15) via a national telephone survey of adults…

A: It is given that n = 8 and p = 0.80.

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: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: Given information: Number of people of 18-21 age bracket, contacted by a pollster = 79 67 of them…

Q: the numbers of dots on the upward faces of two standard six-sided dice give e score for that throw,…

A:

Q: The sample space for this experiment is: GGGG GBGG BGGG BBGG GGGB GBGB BGGB BBGB GGBG GBBG BGBG BBBG…

A: Given data  Total outcomes in sample space = 16 We have to find p(4 girls) = ?   P(event) = no. Of…

Q: If 25 percent of students at a particular school use mechanical pencils, what is the probability of…

A: Given Information: The percentage of students using mechanical pencils =25% Number of the sample…

Q: About 8% of the U.A. Population catches the flu each season. Assuming everyone has equal probability…

A: From the given information, we have About 8% of the U.A. Population catches the flu each season…

Q: Which of the following is the correct standardized test statistic and P-value for the hypotheses, ?

A:

Q: Find the probability of getting someone in the 18-21 age bracket or someone who agreed to respond.…

A: From the information given the contingency table is,   Respond Refuse Total 18 - 21 age 67 12…

Q: Migraine medication was administered to patients in that 5% experienced weight gain as a side…

A:

Q: Are Republicans less likely than Democrats to display the American flag in front of their residence…

A:

Q: In a Gallop Poll, 35% of 30 - 49 states that they believe in ghosts. Find the probability that out…

A: (a) The probability that college students do not believe in ghosts is, P(do not believe in ghosts)…

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A:

Q: About 8% of males are colorblind. A researcher needs three colorblind men for an experiment and…

A:

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A:

Q: The faculty and staff at Dana-Farber Cancer Institute in Boston are required to undergo a…

A: From the information, the number him/her getting a positive test result is 4995 and the total is…

Q: In a survey of U.S. adults with a sample size of 2094​, 370 said Franklin Roosevelt was the best…

A:

Q: 15. An automobile manufacturer collects data on the options chosen by potential purchasers when…

A: For two dependent events A and B, the probability of happening both events A and B is given by the…

Q: A medical study testing a new drug for treating cooties gave the drug to one group and a placebo to…

A:

Q: Based on a Harris Interactive poll, 20% of adults believe in reincarnation. Assume that six adults…

A:

Q: The newspaper reports that among individuals in the 18 to 22 age, 25% drink coffee. If 400 people of…

A: Given,n=400p=0.25q=1-0.25=0.75np=400×0.25=100≥5nq=400×0.75=300≥5we can use normal…

Q: 5. The Gallup Poll once asked an SRS of 1540 adults, "Do you happen to jog?" Suppose 15% of all…

A: We have to find probably using z table

Q: local school board claims that there is a difference in the proportions of households with…

A: CI=Confidence interval=(0.03,0.36)  Hypothesis  Ho: p1-p2=0 vs Ho: p1-p2 ≠0

Q: In an 8 question multiple-choice test, each question has 5 choices and only one of those choices is…

A: Solution: Let X be the number of correct answers and n be the sample number of questions. From the…

Q: as the sample. Contingency Table: Athletic Shoe Sandals Dress shoes Other Total Men 28 6. 8. 12 54…

A: Total no. of people = 130 No. of ways of choosing 2 people out of 130 = 130C2 a) No. of people…

Q: A company manufactures cell phones. In August, a random sample of 125 cell phones was inspected, and…

A:

Q: Harris Interactive poll conducted in Fall, 2002 (A-15) via a national telephone survey of adults…

A: We have given that  n=8 , p=80%=0.80 , q=1-0.80=0.20 X~Binomial(n=8, p=0.80) Note: According to…

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A:

Q: A spinner with 10 equally likely outcomes labeled 1-10 is spun once. What is the probability of…

A: Given:      Sample space =1,2,3,4,5,6,7,8,9,10

Q: Although studies continue to show smoking leads to significant health problems, 20% ofadults in the…

A: The 20% of the adults in the United States are smokers. The sample size is 250 adults. The formula…

Q: It is known that only 25% of college football players are considered as strong candidates for the…

A: Given p=25%=0.25  n=15 X~Binomial(n=15,p=0.25)

Q: A local school board believes there is a difference in the proportion of households with school-aged…

A: The test is to check whether there is a difference in the proportion of households with school-aged…

Q: A local school board believes there is a difference in the proportion of households with school-aged…

A: Solution-: Let ps- the true proportion of households with school-aged children that would support…

Q: A local school board wants to estimate the difference in the proportion of households with…

A: To construct the confidence interval about difference in two proportions, we must use z –…

Q: A wheel with nine different colors on it is spun numerous times, and the results are recorded below:…

A: Total number of times wheel has been spun =70+37+76+9+34+12+28+17+12=295 Therefore total number of…

Q: In an experiment to examine the relationship between heart disease and the place of life, the…

A: a. Possibility of being someone who does not live in the countryside while known to be someone…

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: Given:     Respond Refused to respond Total Age Bracket 18-21 67 12 79   22-29 249 27 276…

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: Given : Making a table from given information in a question   Respond Refuse to respond Total…

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Are Republicans more likely than Democrats to display the American flag in front of their residence…

A: The claim is that Republicans are more likely than Democrats to display the American flag in front…

Q: About 8% of the U.S. population catches the flue each season. Assuming everyine h?as equal…

A: The formula for calculating odds is given below:

Q: In a single-factor random effects experiment, if MSTreatments = 50, MSg = 10, and n = 4, the…

A: given MSTreatments=50 MSE=10 n=4 claim- find the στ2

Q: 11. Survey on Concern for Criminals - In a survey, 3 of 4 students said the courts show "too much…

A: Given: Sample size, n=7 Probability of students said that, courts show "too much concern" for…

Q: (a) What is the CDF of K? (b) What is the probability that fewer than two components of the system…

A:

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A:

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: Given information can be tabulated as shown below.

Q: In 2014, 78.9% of US households spoke only English at home. What is the probability that at least 12…

A: Given that 78.9% of US households spoke only English at home.

Q: Test whether males are less likely than females to support a ballot initiative, if 23% of a random…

A: Given Data: p1=0.23 p2=0.32 n1=50 n2=50