Questions 1-5. Estimate sensitivity, specificity, positive predictive value, negative predictive value and prevalence from data in the 2 x 2 table for an infectious disease and Its diagnostic test. Status Disease Present Disease Absent Marginal Total Test Positive 57 14 61 Test Negative 43 96 139 Marginal Total 100 100 200 2. Specificity 96 % 57 % 69 % 50 % 93%

Q: If one card is drawn at random, find the probability that the card is a red or ace

A: We know that  There are 52 card in the deck in which they divided into two color i.e red(26) and bla...

Q: The President of the Farmers Association wants to know how the amount of fertilizer and the amount o...

A: The independent variables are water and fertilizer. The dependent variable is growth. We have to wri...

Q: (b) If the sample size were 205 rather than 175, would the margin of error be larger or smaller than...

A:

Q: Medical Specialities The following doctors were observed on staff at a local hospital. MD Doctor of ...

A: From the provided information,   MD Doctor of Osteopathy Total Pathology 3 1 4 ...

Q: Test the hypothesis that two communities have equal support for a political candidate using the foll...

A:

Q: PROBLEM:A research study was conducted toe petween older and younger adults on perceived study was c...

A: Here we use a two-sample independent  't-test assuming equal variance, a) Null and alternative hypot...

Q: When conducting a hypothesis test, the hypothesis that illustrates the initial claim being tested ab...

A: The claim being assessed in a hypothesis test is called the null hypothesis.  And alternative hypoth...

Q: and the last digit must De 3! [Q2] A box contains 12 red balls, 8 white balls, and 6 blue balls. (a)...

A: Given that  Total ball =12+6+8=26 Red ball=12 Blue ball=6 White ball=8

Q: Family Values The American family's net worth, on average, rose about 6 percent from 2001 to 2004. B...

A: Mean: The "mean" is the "average" you're used to, where you add up all the numbers and then divide b...

Q: A sample of Oreendale university uderts sakes a sats esam and ther scores are summarzed below If the...

A: The random variable X follows normal distribution. We have to test whether the population mean is di...

Q: Complete the table below. Age No. of actors 20-29 30-39 40-49 50-59 60-69 70-79

A: We have given that the data shows the ages of recent award-winning male actors at the time when they...

Q: Assume that when adults with smartphones are randomly selected, 52 % use them in meetings or classes...

A:

Q: A surprising fact: only 51% of all teens in Canada use a password on their mobile device. If a poll ...

A: Solution: Given information: μp^= 0.51  Mean of sample proportion σp^= 0.15 Standard deviation of sa...

Q: QUESTION 6 The distance of residential moves is found to be exponential, with lambda = 0.06 km. Find...

A: Solution

Q: a. Draw a normal curve distribution showing the 2-Score b. How many applicants are below 20 years ol...

A: here mean = 28 year  standard deviation = 4 year n= 3000 x= age 

Q: The accompanying table lists the ages of acting award winners matched by the years in which the awar...

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for y...

Q: A company claims that the number of defective items manufactured during each run of making 100 of t...

A: Determine whether the value X equals 8 is unusually a high number of defective items on the next run...

Q: Let event A = subject is telling the truth and event B = polygraph test indicates that the subject i...

A:

Q: If the sample standard deviation is determined to be s = 2.5, compute the test statistic. = 23.244 (...

A: (b) We have given that,  H0 : σ = 2.2 versus H1 : σ < 2.2 and sample size (n) = 19 and significa...

Q: A popular weight loss program claims users will lose weight each month. Linda samples 25 dieters and...

A: We have given that,  Sample mean (x̄) = 10 pounds, standard deviation (s) = 2 pounds and sample size...

Q: 1. A marketing manager for a popular supermarket chain is investigating how the position of a new pr...

A: Given in the table,  MSE= 85  Sample sample size is n= 26  There are 4 groups so k= 4 t at a/2= 0.05...

Q: Baby weights: Following are weights, in pounds, of 10 two-month-old baby girls. It is reasonable to ...

A: From the provided information, Sample size (n) = 10 Confidence level = 99.5%

Q: where a > 0 is known. a Find the MLE ô of 0. b Find the expected value and variance of ê. c. Is the ...

A:

Q: mple mean (x). 5. Compute the sample va

A:    

Q: Part 2 of 2 If the sample stze were n=47, would the confidence Interval be narrower or wider? The co...

A: Given that  x̄ = 57.6  , s = 9.5  ,  n = 47

Q: The automated data collection system for a manufacturing process will record data for 25,000 parts p...

A: Given: The automated data collection system for a manufacturing process will record data for 25,000 ...

Q: A Kabwe based Civil Engineering firm has to bid for the construction of the dam in Chibombo area. Th...

A:

Q: A person's blood glucose level and diabetes are closely related. Let x be a random variable measured...

A:   Hence, the probability of X is more than 60 is 0.7580 .

Q: Part 1 of 3 P(patient has had exactly 2 tests done) olo

A: We have given that the frequency distribution the shown the number of medical tests conducted on 37 ...

Q: A survey showed that 77% of adults need correction (eyeglasses, contacts , surgery , etc.). If 12 ad...

A:

Q: standard deck of 52 cards has 4 suits (Each has 13 cards: Ace, 2, 3,..., 10, Jack, Queen, and King):...

A: Given that ; A standard deck of 52 cards has 4 suits (Each has 13 cards: Ace, 2, 3,..., 10, Jack, Qu...

Q: The weights of students in a certain school are normally distributed with a mean weight of 66 kg. 10...

A: Given that  Mean=66 P(X>70)=10% Find P(52<X<66)=?  

Q: We have 39 balls in the box, you choose 5 random balls. What is the percentage that 4 of them are mi...

A:

Q: 6. You are collecting data about your classmates' Favorite colors. what chart might be most helpful ...

A:

Q: Construct a 99%confidence interval to test the hypothesis

A: It is given that Sample size n = 21 Sample mean M = 104 Sample SD s = 9.5 The critical value of t at...

Q: Unhappy HM0 patients. How likely are patients who file complaints with a health maintenance organiza...

A:

Q: In testing of hypotheses, the null hypothesis is the claim that is initially believed to be true O T...

A: We will tell you above statement is true or false.

Q: Suppose you are part of the jury. The defendant is sent to jail despite the fact that he is innocent...

A: Option A is the answer. Type 1 error occurs when the observer rejects a null hypothesis which is act...

Q: What is the coefficient of variation on the company's stock?

A: Here Given for the stock perfomance  

Q: Choose a prisoner at random. Find the following probabilities. R Part: 0 / 3 Part 1 of 3 The probabi...

A: The data is given by   High School College Neither Total Under 30 59 101 445 605 30 and over ...

Q: Test the null hypothesis that the mean weight of all Sain Bernard dogs is 200 pounds (use the signig...

A: It is given that Sample size n = 36 Sample mean M = 193 Population SD = 18 Level.of significance = 0...

Q: On their first date, Kelly asks Mike to guess the date of her birth, not including the year. Complet...

A:

Q: A. Tell whether the given value is a statistic or parameter. 1. The city of Manila is politically di...

A: Tell whether the given value is a statistic or parameter

Q: Leadership By Position Type 80 70 70 67 -70 69.5 60 60 56.5 57 50 46 46 40 30 32 25 20 P12 10 Employ...

A: An observation is considered is an outlier if it is below  = Q1 - 1.5 × IQR  = Q 1 - 1.5 ( Q3 - Q1 )...

Q: For a two-sided test, if the p-value < a we reject the null hypothesis O True O False

A: In hypothesis testing, there are two hypotheses - null and alternative hypothesis. These two must co...

Q: ard games, a player rolls two dice and moves the number of spaces equal to the sum shown on the dice...

A: Law of large no.'s:

Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 28 28 of 286 286 treated su...

A: The random variable subjects experienced headaches follows normal distribution. We have to test whet...

Q: 2. With the growth of internet service providers, a researcher decides to examine whether there is a...

A: Given that  We have to find  Spearman Rank correlation coefficient                                 ...

Q: can you build a research plan covering sample design and state hypothesis

A: Given information: It is required to build a research plan covering sample design and hypothesis.

Q: As you learned in your text, correlation is often presented as causation. In other words, the cause ...

A: That first fact is indeed incorrect. You can have causation. However, most of the time we miscategor...