If the odds of catching the flu among individuals who take vitamin C is 0.0342 and the odds of catching the flu among individuals not taking vitamin C is 0.2653, then the individuals not taking vitamin C are 7.7573 times more likely to catch the flu than individuals taking vitamin C.

Q: A study was conducted to determine whether pneumonia is associated with Covid-19. Of the 275 cases,…

A: Strength of association between the two variable with exposure and the disease used to take…

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: A psychological test has scores that range from 0 to 10 (whole numbers only). The stable range is…

A:

Q: Suppose you commit a crime. The way the judge is going to set your sentence is by pulling a number…

A: Given data X Frequency Probability P(X) X x P(X) X2  x P(X) 1 10 10/16 = 0.625…

Q: Interpret the following values for an odds ratio (OR) and Relative Risk (RR) 1. OR = 1.0; OR = 0.5;…

A: Given: 1). OR=1.0; OR=0.5; OR=2.0 2). RR=1.0; RR=0.5; RR=2.0

Q: Example: If 25 percent of all patients with high blood pressure have bad side effects from a certain…

A: The probability that a patient with hypertension may have negative side effects from a particular…

Q: what happens If the Levene's test is statistically significant?

A: Levene's test is an inferential measure used in statistics to determine the equality of variances…

Q: Suppose i have an unfair coin and it lands on heads 75% of the time.  If I flip this coin four times…

A: Obtain the probability of getting only 1 head.   The probability of getting only 1 head is obtained…

Q: If n=6 and mean= .40 , what is the probability that X>1?

A: Given,n=6 , mean=0.40A random variable X~Binomial(n, p)

Q: The p-value of a statistical test turns out to be about 16%. Which, if any, of the following MUST be…

A: The hypothesis is an assumption that is bein tested.

Q: For a binomial experiment with r successes out of n trials, what value do we use as a point estimate…

A: In binomial distribution P is probability of success and n is number of trials.  Let  random…

Q: Investigators studied the relationship between taking a new drug versus placebo on lowering blood…

A: Based just on the p-value for the Breslow Day test, we can conclude the following:There is not…

Q: Why is probability theory important to statistics?

A: The probability of an event:The probability of an event is obtained as the ratio of favourable…

Q: A researcher randomly assigns 118 critically ill patients to receive a drug and 234 to receive a…

A: Consider a contingency table.   Yes No Yes a b No c d   Then the odds…

Q: The lifetime of an electronic deivce is modeled as an exponential random variable. If12% of the…

A:

Q: If a condition has a 30% prevalence, what is the expected number of cases in a random sample of 200?

A:

Q: A statistic is a random variable that depends only on the observed sample. True False

A: We have  Statistic: The function of sample.  i.e a random variable which depends on the sample

Q: 2/5 of all assignments are mandatory. 1/20 of those assignments contain the phrase "use your…

A: Consider the following events:M: the assignment is mandatory.U: the phrase "use your imagination" is…

Q: e of rain is forecast to be 20% each da

A: (As per Bartleby guidelines for more than one question asked only one is to be answered please…

Q: Are relative risk of 2 and 0.5 the same or different in strength of association?

A: Relative Risk It is the proportion of occurred disease or mortality among the population group which…

Q: A laboratory trial is conducted to evaluate the risks associated with consumption of…

A: Total number of mice experimented upon =1000 Number of mice who got exposed to pesticide…

Q: Problem 10. Suppose the probability of a false positive result on a mammogram is 5% and that…

A: Let, P(F) =  probabity of failure         = probability of false positive result        = 0.05…

Q: Suppose you have a loaded coin that when flipped is likely to land on heads about 20% of the time…

A: Here the probability of obtaining tails is given as 0.8, also the coin is flipped 3 times. So the…

Q: Given a normal population with mean = 39 and variance = 16, what is the probability of obtaining an…

A:

Q: A dentist hypothesizes that the average time a child spends brushing their teeth is less than 60% of…

A: In the given situation, the claim of the problem is "the average time a child spends brushing their…

Q: The lifetime of an electronic device is modeled as an exponential random variable. If 16% of the…

A:

Q: If 11% of the population has a certain illness , what is the expected number of ill people in a…

A:

Q: If the probability that a married man will vote in a given elecțion is 0.60, the probability that a…

A:

Q: Based on information from a large insurance company, 66% of all damage liability claims are made by…

A: From the provided information, Sample size (n) = 51 From which 43 were made by single people under…

Q: Suppose you were selected from a population at random to take a medical test. It is believed that…

A: Given that : P(ill)=5%=0.05 P(not ill)=1-0.05= 0.95 P(positive | ill)= 90%=0.90 P(positive | not…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.