Math

StatisticsQ&A LibraryUse the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 150 subjects with positive test results, there are 26 false positive results; among 152 negative results, there are 4 false negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Hint: Construct a table.)Start your trial now! First week only $4.99!*arrow_forward*

Question

Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 150 subjects with positive test results, there are 26 false positive results; among 152 negative results, there are 4 false negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Hint: Construct a table.)

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items w...

A: Given data obtained for a collection of archeological sites in New Mexico as shown below. The least ...

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's deg...

A: Note:Thank you for posting the question! Since your question has more than 3 parts, we have solved t...

Q: Reasons for means and medians being good and misleading.

A: Solution:Definition of mean and median:Mean and median are the measures of central tendency.Arithmet...

Q: A test consists of 940 true or false questions. If the student guesses on each question, what is th...

A: Given number of true or false questions = n = 940.Probability of correct answer p = 1/2Here we can s...

Q: A hospital administrator claims that the proportion of knee surgeries that are successful is 87%. To...

A: The provided information are:Sample size (n) = 450Hypothesised proportion (po)=0.87From the provided...

Q: Please answer the attached picture. Thanks,

A: Г(1,Ɵ) represents a gamma distribution X~ Г(α,λ) where α is the shape parameter and λ is the scale p...

Q: A research group claims that 20% of patients with dementia never develop full Alzheimer's. In a simp...

A: According to the given question, to test the hypothesis that the research group claims that 20% of p...

Q: In a survey of 3 of 4 students said the courts show too much concern for criminals. Find the probab...

A: According to the given question, in a survey of 3 of 4 students said the courts show too much concer...

Q: The table below shows the critical reading scores for 14 students the first two times they took a st...

A: Given the data of critical reading scores for 14 students the first two times they took a standardiz...

Q: Do you have a great deal of confidence in the advice given to you by your medical doctor? About 35% ...

A: According to the provided information, sample size (n) = 37 and the population proportion of people ...

Q: Do you want to own your own candy store? Wow! With some interest in running your own business and a ...

A: (a)Using the provided data, the sample mean and standard deviation can be calculated using Excel fun...

Q: A researcher wants to test to see if husbands are significantly older than their wives. To do this, ...

A: The aim is to find the accurate statement from the following options to evaluate the population mean...

Q: On a test, 95% of the questions are answered correctly. If 57 questions are correct, how many quest...

A: The aim is to find the number of questions on the test.Here, the number of question answered correct...

Q: Suppose that in a random selection of 100 colored candies, 21% of them are blue. The candy company c...

A: State the appropriate hypothesis:Let p be the population proportion of blue candies.A candy company ...

Q: 10 9 8 6 Frequency 5 4 3 2 1 0 to 9 10 to 19 20 to 29 30 to 39 40 to 49 50 to 59 The table above lis...

A: Frequency table:Frequency table represents the number of times each class repeats.The frequency of e...

Q: I asked the attached question earlier today, and a response was sent, but none of the answer appeare...

A: Introduction to binomial distribution:Consider a random experiment involving n independent trials, s...

Q: Part a, b, and c

A: Null and alternative hypothesis:Null Hypothesis:A null hypothesis is a statement regarding the popul...

Q: Exam grades: scores on a statistics final in a large class were normally distributed with a mean of ...

A: Let X be the scores on statistics final, which is normally distributed with mean = 75 and standard d...

Q: A simple random sample of n=23 professors at a local community college have a mean course evaluation...

A: Solution:Null and alternative hypotheses:Null hypothesis: µ = 4Alternative hypothesis: µ ≠ 4Test sta...

Q: Suppose that we have the data {x1, x2, ..., xn} such that x1=x2=...=xn=3. What is the mean of the da...

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...

Q: Records over the past year show that 1 out of 355 loans made by Mammon Bank have defaulted. Find the...

A: Given that over past year 1 out of 355 loans made by Mammon bank have defaulted.Here it is appropria...

Q: 1. In a random sample of 15 CD players brought in form repair, the average repair cost was $80 and t...

A: It is given that the average repair cost (mean) is $80, sample standard deviation s is $14, the samp...

Q: Select the statistic test that best fits each description. Study exploring the relationship between ...

A: Introduction:A brief introduction to the various tests suggested here is given below:T-test independ...

Q: Why should researchers be very cautious about comparison or correlatios that involve different vaiab...

A: In general correlation does not imply causation. If there is strong correlation between two variable...

Q: Using 50 random numbers given below, compute the mean and standard deviation 0.299752 0.939920 0.427...

A: Standard deviation of a sample tells how the values are spread out from mean of the sample. A low st...

Q: Suppose that Xi ∼ Gamma(αi , β) independently for i = 1, . . . , N. The mgf(moment generating functi...

A: Introduction:It is given that Xi’s (i = 1, 2, …, N) are independent Gamma (αi, β) random variables w...

Q: Avarege GPA questions. Data include.

A: Note: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not me...

Q: You draw and keep a single coin from a bowl that contains 12 pennies, 9 dimes, and 20 quarters. What...

A: The given information is that the bowl contains the12 pennies, 9 dimes, and 20 quarters.It is known ...

Q: Use one of the following key terms to answer each of the following questions. KEY TERM BANK (separa...

A: Solution:Definition of Univariate data:When the data contains only one variable, it is called univar...

Q: Select the statistic test that best fits each description. Number of heart attacks per blood type (a...

A: Introduction:A brief introduction to the various tests suggested here is given below:T-test independ...

Q: Part A, B, C

A: Here, the population standard deviation is unknown, so the t-distribution is used.It is provided tha...

Q: A statistical program is recommended. Electromagnetic technologies offer effective nondestructive se...

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any ...

Q: Find the critical value tc for the confidence level c=0.98 and sample size n=21

A: The critical value tc for 98% confidence level with sample size 21:The confidence level is 98%. Tha...

Q: If a chicken and a half lays an egg and a half in a day and a half how many eggs can 30 chickens lay...

A: It is given that a chicken and a half lays an egg and a half, in a day and half.That is, 1.5 chicken...

Q: Which statement regarding skewed distributions is FALSE? The "68-95-99" rule does not apply to skew...

A: The 68-95-99 rule is applicable only in normal distributions. So it is not applicable to skewed dist...

Q: How do I find A’ , Is It B,D and F ?

A: Given U = {a,b,c,d,e,f,g}A = {a,c,e,g}B = {a,b,c,d}A' is nothing but compliment of the set A which h...

Q: An economist claims that the proportion of people who plan to purchase a fully electric vehicle as t...

A: The provided information are: Sample size (n) = 750Hypothesised proportion (po)=0.65From the provide...

Q: Number 2 Please, Explain shortcut with TI84 if applicable

A: Given sample size n = 36Sample mean = 44Sample standard deviation = 5.2Level of significance = α = 0...

Q: Find the mean, the median, the mode, and the midrange, the range, variance, standard deviation, 65th...

A: Hello there! According to our policies can answer one question . As there are multiple questions in ...

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a bell-shape...

A: Chebyshev’s inequality:Chebyshev’s rule is appropriate for any distribution. That is, Chebyshev’s in...

Q: Fifty-three percent of all persons in the U.S. population have at least some college education. Cho...

A: According to the given question, Fifty-three percent of all persons in the U.S. population have at l...

Q: A computer system uses passwords that contain exactly 6 characters, and each character is 1 of the 2...

A: We have to make a password of 6 digits whose digits can be 26 lowercase alphabets, 26 uppercase alp...

Q: BASED ON THIS DATA, what does the r^2 values tell you? and the linear regression line is the inform...

A: Note:Hi there! Thank you for posting the question! However, the circumstances of the study presented...

Q: The Toylot company makes an electric train with a motor that it claims will draw an average of only ...

A: The provided information are:

Q: a. Which of the six correlations above are statistically significant (i) if you test each correlatio...

A: We have been given alpha = 0.05 which implies that the probability of inferring that there is a cor...

Q: Suppose you are assigned the number 1, and the other students in your statistics class call out cons...

A: Solution:(a) A random sample of four students from statistics class can be selected by using a compu...

Q: Determine whether or not sigma1 square is equal to sigma 2 square using a 5% significance level if w...

A: According to the given question, to test the hypothesis of H0: sigma 1 square is equal to sigma 2 s...

Q: Claim: Most adults would erase all of their personal information online if they could. A software fi...

A: Test statistic:The test statistic for hypothesis test for proportion is given by:

Q: A student takes a multiple-choice test that has 20 questions. Each question has five choices. The st...

A: Binomial distribution:It is a discrete probability distribution in which each trials have exactly tw...

Q: Nationally, about 11% of the total U.S. wheat crop is destroyed each year by hail.† An insurance com...

A: (a) Level of significance:It is given that to test whether the percentage of wheat crop lost to hai...