A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of 10 adults over 50, what is the probability that at least six wear glasses? OA. 0.006 OB. 0.850 OC. 0.700 O D. 0.200 C

Q: A binomial probability experiment is conducted with 15 independent trials with 20% probability of…

A: given data  P(success) = p = 0.20 sample size(n) = 15 x = no. of successes.  P(x=X) = nCxpxqn-x…

Q: According to the American Lung Association, 85% of adult smokers started smoking before turning 21…

A: Let X be a random variable from Binomial distribution with n= 20 and probability p= 0.85

Q: In a survey of 9 people, it was found that an average of $37 was spent on their child's last…

A: given data,n=9x¯=37s=16CI=0.99here population standard deviation is unknown  so we use t-…

Q: A researcher is interested in estimating the mean time it takes adults to learn a certain task. He…

A: Given that Confidence interval (C) = 99% Mean time for sample of adults within 0.6 minutes of…

Q: You conduct a one-factor ANOVA with 5 groups and 6 subjects in each group (a balanced design).  Use…

A: Given that there are 5 groups and 6 subjects in each group. Total number of subjections, N=5*6=30…

Q: Make a scatter plot. (Carefully choose units on both axes; no need to start at 0, but make them not…

A:

Q: Ordered Violent Ordered Violent Ordered Violent Ordered Value Crime Value Crime Value Crime Value…

A: Given data set can be arranged into ascending order : 19.8, 20.6, 21.8, 22.4, 37.2, 53.3, 70.5,…

Q: all possible samples of size 100 from a very large population of values. The mean of the population…

A: given data,n=100μ=550σ=50

Q: The Internal Revenue Service is studying the category of charitable contributions. A sample of 34…

A: Population(N)= 34  Age between 20 to 35  Adjusted gross income of more than $100,000 Of these 34 ,…

Q: food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed…

A: Given that  Sample size n =7 98% confidence level.

Q: In a survey, 30 people were asked how much they spent on their child's last birthday gift. The…

A: given data,n=30bell shaped distribution μ=47σ=6CI=0.80we have to find out the confidence interval…

Q: A community health plan researcher wishes to estimate the mean number of visits per plan participant…

A: Suppose μ is the population mean number of visits per plan participant in a year.

Q: Many people feel that cereal is healthier alternative for children over glazed donuts. In a sample…

A: given data  n = 19x¯ = 10.6316s = 1.570990% ci for μ = ?

Q: The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally…

A: Using t test statistic because the sample is less than 30 and population standard deviation is…

Q: Use the given information to find the number of degrees f freedom, the critical values x and x, and…

A: From the given information we find the 95% confidence interval for sd.

Q: Empirical probabilities are deeply rooted in probability. essentially percentages based on a large…

A: Empirical probability or experimental probability is determined how often an event has been observed…

Q: A cognitive psychologist studying motivation wants to determine if type of music has any effect on…

A: ANOVA summary table ,   Source  SS df MS F Between  SSB k-1 MSB =SSBk-1 MSBMSW Within  SSW…

Q: a) What percent of Tigers drives travel at least 308.5 yards? b) What percent of Tiger's drives…

A: It is given that  Mean, μ = 304.8 Standard deviation, σ = 7.8 Z-Score, Z = ( X - μ )/σ

Q: finds the average number of seeds is 41 with a standard deviation of 18. Construct a 99% conti…

A:

Q: After you perform a regression you find that the correlation coefficient is -0.939. The dependent…

A: The question is about regression Given : Value of correlation coefficient ( r ) = -0.939 Data :…

Q: Dependent Variable: UR Method: Least Squares Date: 10/31/22 Time: 09:47 Sample: 1991 2021 Included…

A: From the variable table, we get to know that if INF is independent variable and UR is dependent…

Q: Bob’s Garden Supply has seen the following annual demand for lime bags over the past 11 years. Year…

A: Given the data of Bob’s Garden Supply of annual demand for lime bags over the past 11 years as…

Q: Part 1 of 3: The age when smokers first start from previous studies is normally distributed with a…

A: Solution-: Given:\bar{x}=14.3,n=32, \sigma=1.9,c=0.95 We want to find, (Part 1 of 3) The 3-decimal…

Q: Which test statistic should be used when computing a confidence interval given only the number in a…

A: Explanation:given which test statistic  should be used for population standard deviation  and sample…

Q: Find the sample size needed to estimate the mean age of movie patrons such that it can be said with…

A: given data,CI=0.98E=1σ=19.6n=?

Q: The local university is interested in how many of it's students plan on using some of the new…

A: Given Total number of students = 3000 Number of students who will receive a questionnaire out of…

Q: Calculate the value of the sample standard deviation round to one decimal place -13,-13,2,2,-13,2,-9

A: x x2 -13 169 -13 169 -13 169 -9 81 2 4 2 4 2 4 ∑x = -42…

Q: Which of the following represents the underlying linear model for hypothesis testing?     Y = b0 +…

A: In this case, we need to identify the suitable answer for the given statement.

Q: In systematic sampling, every nth member of the population is taken from a list and included in the…

A: It is given that the statement about to the systematic sampling.

Q: What are the odds of rolling a 12 on two six-sided dice? % (In percentage, not proportion,…

A: given data  roll two six sided dice.  P9roll sum of 12) = P(roll{6,6} ) = 136 find odds of rolling…

Q: The president of Doerman Distributors, Inc. believes that 30% of the firm's orders come from first…

A: given data  n = 100 p = 0.30

Q: Assume that adults have IQ scores that are normally distributed with a mean of 101 and a standard…

A: Solution-: Given: μ=101,σ=20.3 We want to find Q1=?

Q: Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a…

A: given data  bell shaped(normal diostribution) μ = 80σ = 9EMPIRICAL RULE : approximately 68-95-99.7%…

Q: I Calculate the Standard Score of the given xvalue X = 28,3 Where N = 26.3 and 0=28.1 Round to 2…

A: given data  normal distribution  μ = 210.3σ = 28.1x = 28.3z = ?

Q: Null Hypothesis: UR has a unit root Exogenous: Constant Bandwidth: 13 (Newey-West automatic) using…

A: From the first table, we see that the p-value of Phillips-Perron test is 0.2945 which is greater…

Q: Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample…

A: Given data is 60,64,64,57,64,54,59,58,59,69,62,68sample size(n)=12confidence level=98%

Q: Exhibit 14-16 You are given the following information about x and y. Independent Variable 21 8 9 10…

A: Given data is Independent variable (x) dependent variable (y) 21 10 8 4 9 8 10 5

Q: Use the ALEKS calculator to solve the following problems. (a) Consider a t distribution with 14…

A: Find  (a)df=14, P(t≤-1.07)=?  (b) P(-c<t<c)=0.95, df=26

Q: In manufacturing integrated circuits, the yield of the manufacturing process is the percentage of…

A: Let X:number of defective integrated circuits. GivenP(an integrated circuit manufactured by the ace…

Q: You may need to use the appropriate appendix table or technology to answer this question. Consider…

A: Given that  A sample of 50 provided a sample mean of 19.1. The population standard deviation is 2.

Q: The following graph represents the results of a survey, in which a random sample of adults in a…

A: a). From the histogram shows that 74℅ of the respondents believe that action is morally acceptable.…

Q: In 2016 Americans owed $1.3 trillion in student loans. The default rates of college student loans…

A: Given that  p=11.2%=0.112 Sample size n =215

Q: Part 1 of 3: Assume that a sample is used to estimate a population proportion and a sample of size…

A: Data given n=251, x=177

Q: Suppose an electric-vehicle manufacturing company estimates that a driver who commutes 50 miles per…

A:

Q: 8. In 2004, the distribution of net worth within the United States was as given in the following…

A:

Q: Find the 90th percentile. So 10% of the T

A: Let X be the lifetime of LCD TV sets follows an exponential distribution with a mean of 100,000…

Q: A health journal found that 56.1% of college students who lived in coed dormitories consumed alcohol…

A: Given that  Population proportion p=0.561 Sample size n =180

Q: An online shop wants to estimate the average time that visitors to its website spend browsing the…

A: given data,n=49x¯=13.6σ=5.2CI=0.80α=0-0.80=0.10

Q: An article in the Register stated that students in the state university system take 4.5 years, on…

A: Givensample size(n)=49Mean(x)=5.1standard deviation(s)=1.2significance level(α)=0.01

Q: Miles per gallon of a vehicle is a random variable with a uniform distribution from 25 to 35. The…

A: From the provided information, Miles per gallon of a vehicle is a random variable with a uniform…