Suppose that the response time X of a subject to a stimulus is N(15, 16). If n-16, then the probability of the sample mean greater than 12 is: O a. 0.9772 Ob. 0.9987 OC. 0.0013 Od. 0.7899

Q: 8. Assume that the total score (from both teams) for college football games averages µ = 42 points…

A: It is given that the mean is 42 and the standard deviation is 20.

Q: If t-test is 2.23 and the sample size is 15, for a one-tailec (upper tail) the probability value is…

A: Given: Sample size (n) = 15 Test statistic (t) = 2.23

Q: A sample of n=900 observations is drawn from a population that is normally distributed with mean…

A: Solution: From the given information, X follows normal distribution with a mean µ=1,000 and a…

Q: Calculate the probability that for a random sample with n = 5 taken from a population with…

A: Given that the random variable X follows N100, 252 distribution.

Q: 2. For a nomal population with u = 100 and o =15, a. what is the probability of obtaining a sample…

A: Draw the normal curve and shade the area to the right of z=1. Refer to Standard normal…

Q: Here is the daycare center sample data from the prior problem. cries between cries fewer than |10…

A: The following information table is provided.   Cries fewer than 10 times a day Cries between 10…

Q: A sample of n = 14 observations is drawn from a normal population with u = 1090 and o = 170. Find…

A:

Q: Assume that 12 jurors are randomly selected from a population in which 76% of the people are…

A: The probability distribution table is given as: X P(x) 0 0+ 1 0+ 2 0+ 3…

Q: A random sample of n = 4 scores is obtained from a normal population with u = 30 and o= 8. What is…

A: Mean = 30 Standard deviation = 8 Sample size = 4

Q: Suppose that the random variable x, shown below, represents the number times . P(x) represents the…

A: a) The random variable x defines the number of times a randomly selected person having received that…

Q: Assume that 12 jurors are randomly selected from a population in which 75% of the people are…

A:

Q: Assume that 12 jurors are randomly selected from a population in which 74% of the people are…

A:

Q: Suppose that the random variable xx, shown below, represents the number times . P(x) represents the…

A:

Q: uppose that the random variable xx, shown below, represents the number of speeding tickets a person…

A: given: x P(x) 0 0.3525 1 0.3221 2 0.1689 3 0.0811 4 0.0402 5 0.0352 6+ 0.0000

Q: Assume that 12 jurors are randomly selected from a population in which 78% of the people are…

A: From the given information, number of juniors randomly selected n = 12. Let X be the number of…

Q: It is known that 55% of customerS who shop at a market for more than 3000 YTL shop in installments.…

A: 12. Given information: The population proportion is, p=55%=0.55 Sample size is n=35 The standard…

Q: Assume that 12 jurors are randomly selected from a population in which 77% of the people are…

A:

Q: A survey of cars on a certain stretch of highway during morning commute hours showed that 55% had…

A: The random variable X has the following probability mass function:

Q: Assume that 12 jurors are randomly selected from a population in which 82% of the people are…

A: Given, that 12 jurors are randomly selected from a population in which 82% of the people are…

Q: 3. The ratio of adult males to adult females living in a certain town is 17:18, and of these adults,…

A: Solution

Q: Assuming that o = 20.0, how large a random sample be taken to assert with probability 0.95 that the…

A:

Q: A random sample of n = 64 scores is obtained from a normal population with u = 30 ando = 10. What is…

A: Givensample size(n)=64Mean(μ)=30standard deviation(σ)=10

Q: Suppose that we have a population with proportion P = 0.25 and a random sample of size n = 200 drawn…

A: Let the probability of the random sample be X. (a) Determine the probability that X>0.31.…

Q: For a sample of n = 75, the probability of a sample mean being greater than 222 if u =221 and o =…

A:

Q: According to the National Center for Health Statistics (2004), 22.4% of adults are smokers. A random…

A: Given: Sample size (n) = 300 Population proportion (p)=22.4%

Q: B) 0.342 C) 0.347 D) 0.1056 E) 0.986

A: Proportion of customers who shop more than 100 YTL will follow normal distribution with proportion…

Q: Assume that 12 jurors are randomly selected from a population in which 77% of the people are…

A: Given probability distribution table is

Q: The probability of the sample space S is always less than 1. Select one: O True O False

A: The answer is : False. Explanation: A sample space is a collection of all possible outcomes of a…

Q: Suppose that we have a population with proportion P = 0.40 and a random sample of size n = 100 drawn…

A: Given information: Population proportion p0=0.40 Sample size n=100

Q: For the following example, identifyn, p, q,X(where X is denoting the random variable)and P(__?_)…

A: We have to find the binomial probabilities.

Q: A random sample of n = 4 scores is obtained from a normal population with u = 30 and o = 8. What is…

A: A random sample of n = 4 scores is obtained from a normal population with u = 30 and σ =  8.

Q: The following table shows the distribution of murders by type of weapon for murder cases in a…

A: Given:

Q: The random sample X is normally distributed with mean 50 and standard deviation 18. If n=324,…

A: Since, the parent population follows normal distribution, the sampling distribution of the sample…

Q: Suppose we want to estimate the average speed of cars traveling on Pacheco Pass, and we want to be…

A: Given Information: Confidence level = 0.98 Significance level α=1-0.98=0.02 Margin of Error E=3…

Q: Assume that 12 jurors are randomly selected from a population in which 76% of the people are…

A: We have to find given probabaility

Q: Suppose that the random variable xx, shown below, represents the number of speeding tickets a person…

A: given: x P(x) 0 0.3891 1 0.281 2 0.1497 3 0.098 4 0.0471 5 0.0351 6+ 0 Plug in…

Q: Suppose the number of cars in a household has a binomial distribution with parameters n = 8, and p =…

A: Givenn=8p=0.20Let "x" be the no. of cars household havingP(X=x)=Cxn×px×(1-p)n-x  ;  x=0,1,..,n

Q: Suppose that the random variable xx, shown below, represents the number of speeding tickets a person…

A: A). P (X ≥ 4) = P(X=4) + P(X=5) + P(X=6+)                      = 0.0377 + 0.0126 + 0…

Q: a) What is the probability that a randomly selected person has received four tickets in a three-year…

A: The random variable x represents the number of speeding tickets a person received in a three-year…

Q: For familiés with 5 children, let X be the number of children with Genetic Condition B. Can the…

A: Let X be the number of childrens.Probability is given.

Q: An engineering school reports that 55% of its students were male (M), 31% of its students were…

A: The probability that the students  are male is 0.55. The probability that the students are between…

Q: Assume that 12 jurors are randomly selected from a population in which 79% of the people are…

A: Let , X be the number Mexican-Americans people. The probability distribution table is :

Q: s known that 25% of the customers who shop at the big shopping mall for more than 200.000 YTL do…

A: It is given that p =0.25 and standard error is 0.062.

Q: A random sample of n=16 scores is obtained from a normal population with μ=38 and σ=8. What is the…

A: Let us consider, X represents a normal population with μ=38 and σ=8.  Thus, X~N(38,82). We have a…

Q: Assume that 12 jurors are randomly selected from a population in which 86% of the people are…

A: x P(x) 0 0+ 1 0+ 2 0+ 3 0+ 4 0+ 5 0.0004 6 0.0028 7 0.0148 8 0.0569 9 0.1553…

Q: Assume that 12 jurors are randomly selected from a population in which 73% of the people are…

A: It is given that 73% of the people are Mexican-Americans.

Q: 1. The number of meteors found by a radar system in any 30-second interval under specified…

A: Given :  The number of meteors found by a radar system in any 30-second interval under specified…

Q: Suppose a simple random sample of size n= 125 is obtained from a population whose size is N = 25,000…

A: b) Assume that p as the true population proportion.

Q: Suppose that the random variable xx, shown below, represents the number times . P(x)P(x) represents…

A: Part A The probability that a randomly selected person has received four tickets in a three-year…

Q: A sample of n=400 observations is drawn from a population with mean p=1,000 and o=400. Find the…

A: Solution: From the given information, X follows normal distribution with a mean µ=1,000 and a…