You obtain 336 successes in a sample of size n1=391n1=391 from the first population. You obtain 419 successes in a sample of size n2=472n2=472 from the second population. For this test, you should NOT use the continuity correction, and you should use the normal distribution as an approximation for the binomial distribution. What is the test statistic for this sample

Q: The mean we ght of an adult is 76 kilograms with a variance of 100 if 142 adults are randomiy…

A: Given,mean(μ)=76standard deviation(σ)=10 sample size(n)=142

Q: An astronomer wants to measure the distance from his observatory to a distant star. However, due to…

A: Given that an astronomer wants to measure the distance from his observatory to a distant star.…

Q: The

A: It is given that the sample size is n=50. The probability that a workforce belongs to a union is…

Q: What is the calculator command used to find the probability of a continuous Normal random variable…

A: The Normal distribution is a continuous probability distribution that is symmetrical on both sides…

Q: According to a recent study, 30% of American adults will not sit on a public toilet seat. You are…

A: The question is about sampling dist. Given : Popl. prop. of adults will not sit on a public toilet…

Q: If all the possible random samples of n=81 scores are selected from a normal population with u=80…

A:

Q: And REM rapid eye movement sleep is sleep during which most dreams occur. Each night a person has…

A: Hypotheses for the test are given below: H0:μ1=μ2H1:μ1>μ2

Q: Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times…

A: Given, Recent Past 78 89 91 89 89 93 78 94 58 65 101 84 62 85 87 92 69 86 87…

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A: The objective is to define the type-I and type-II error, that arises when the validity of the claim,…

Q: he taxi and takeoff time for commercial jets is a random variable x with a mean of 8 minutes and a…

A:

Q: If two independent sufficiently large samples are taken from two populations with known population…

A: It is important to understand Central Limit Theorem to answer this question. Central Limit theorem…

Q: Suppose we have a random variable X distributed as a Bernoulli distribution with p = 0.5. What is…

A:

Q: A simple random sample size n=180 is obtained from a population whose size is 20,000 and whose…

A:

Q: A random sample X₁, X2, X3, ..., X100 is given from a distribution with known varianc Var (X₂) = 81.…

A: Given: random sample X1, X2, X3, . . , X100 is given from a distribution with known variance Var(Xi)…

Q: Eagle flu can be devastating for those who are hospitalized. Researchers at JJ Health Services took…

A: Requirements for Binomial Distribution:   The Binomial distribution is useful if the experiment has…

Q: uppose x has a distribution with a mean of 90 and a standard deviation of 27.  Random samples of…

A: Solution: Given information: n= 36 Sample size μ= 90  Population mean σ= 27 Population standard…

Q: A sample of n = 25 scores has a mean of x̅ = 65 and an estimated standard error of sx̅ = 2 points.…

A: The standard error is 2 points.

Q: Suppose that a random sample of size 20 is taken from a normal distribution with unknown mean and…

A: Given Information: Sample size n=20 Variance σ2=1 Sample mean x¯=10 Posterior mean μpost=15…

Q: In Europe, 53% of the flowers of the Rewardless Orchid, Dactylorhiza sambucina, are yellow, whereas…

A: It is given that 53% of flowers are yellow. Hence, the remaining 47% are purple. a). The randomly…

Q: suppose random variable x has a normal distribution with a mean of 10 and a variance of 16.…

A: Given that X follows a normal distribution with mean=10 and variance=16. So standard…

Q: We use the hypergeometric distribution in place of the binomial distribution when we are sampling…

A:

Q: Eagle flu can be devastating for those who are hospitalized. Researchers at JJ Health Services took…

A: From the given information, Sample size (n) =2561 X = 1497 Consider, p be the (unknown) true…

Q: According to one study among a certain people group, pregnancy lengths are approximately normally…

A: Let X be the number of premature babies born to these mothers.

Q: Scores on a standardized mathematics test for 8th grade children in New York State form a normal…

A: From the given information 8th grade children in new York state form a normal distribution with mean…

Q: Suppose only 40% of all drivers in a certain state regularly wear seatbelts. A random sampleof 400…

A: Given,n=400p=0.40mean(μ)=npμ=400×0.40=160standard deviation(σ)=np(1-p)σ=400×0.40(1-0.40)σ=9.79796

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.